485BPOS

As filed with the Securities and Exchange Commission on September 7, 2018

Securities Act File No. 333-152915
Investment Company Act File No. 811-22227

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 |X|

Post-Effective Amendment No. 158 |X|

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 |X|

Amendment No. 160 |X|

(Check appropriate box or boxes.)

INDEXIQ ETF TRUST
(Exact Name of Registrant as Specified in Charter)

51 Madison Avenue
New York, NY 10010
(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, including Area Code: (888) 474-7725

Matthew V. Curtin, Esq.
IndexIQ Advisors LLC
51 Madison Avenue
New York, NY 10010

It is proposed that this filing will become effective:

x Immediately upon filing pursuant to paragraph (b) of Rule 485

o on______, pursuant to paragraph (b)(1) of Rule 485

o 60 days after filing pursuant to paragraph (a)(1) of Rule 485

o on _______, pursuant to paragraph (a)(1) of Rule 485

o 75 days after filing pursuant to paragraph (a)(2) of Rule 485

o on _______, pursuant to paragraph (a)(2) of Rule 485

Exhibit Index

Exhibit No.	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certified that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act and that it has duly caused this Post-Effective Amendment No. 158 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, and State of New York on this 7th day of September, 2018.

INDEXIQ ETF TRUST
By:	/s/ Kirk C. Lehneis
	Kirk C. Lehneis
	President

Pursuant to the requirements of the Securities Act, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

Name	Title	Date
Reena Aggarwal*	Trustee	September 7, 2018
Reena Aggarwal
Michael A. Pignataro*	Trustee	September 7, 2018
Michael A. Pignataro
Paul D. Schaeffer*	Trustee	September 7, 2018
Paul D. Schaeffer
/s/ Kirk C. Lehneis	Trustee, President and Principal	September 7, 2018
Kirk C. Lehneis	Executive Officer
/s/ Adefolahan Oyefeso	Treasurer, Principal Financial	September 7, 2018
Adefolahan Oyefeso	Officer, and Principal Accounting
	Officer
/s/ Matthew V. Curtin
Matthew V. Curtin, Attorney-in-fact*

* PURSUANT TO POWERS OF ATTORNEY PREVIOUSLY FILED

XML

Document and Entity Information	Total
Risk/Return:
Document Type	485BPOS
Document Period End Date	Apr. 30, 2018
Registrant Name	IndexIQ ETF Trust
Central Index Key	0001415995
Amendment Flag	false
Document Creation Date	Aug. 29, 2018
Document Effective Date	Aug. 29, 2018
Prospectus Date	Aug. 29, 2018
IQ Hedge Multi-Strategy Tracker ETF | IQ Hedge Multi-Strategy Tracker ETF
Risk/Return:
Trading Symbol	QAI
IQ Hedge Macro Tracker ETF | IQ Hedge Macro Tracker ETF
Risk/Return:
Trading Symbol	MCRO
IQ Hedge Market Neutral Tracker ETF | IQ Hedge Market Neutral Tracker ETF
Risk/Return:
Trading Symbol	QMN
IQ Hedge Long/Short Tracker ETF | IQ Hedge Long/Short Tracker ETF
Risk/Return:
Trading Symbol	QLS
IQ Hedge Event-Driven Tracker ETF | IQ Hedge Event-Driven Tracker ETF
Risk/Return:
Trading Symbol	QED
IQ Real Return ETF | IQ Real Return ETF
Risk/Return:
Trading Symbol	CPI
IQ Leaders GTAA Tracker ETF | IQ Leaders GTAA Tracker ETF
Risk/Return:
Trading Symbol	QGTA
IQ Enhanced Core Bond U.S. ETF | IQ Enhanced Core Bond U.S. ETF
Risk/Return:
Trading Symbol	AGGE
IQ Enhanced Core Plus Bond U.S. ETF | IQ Enhanced Core Plus Bond U.S. ETF
Risk/Return:
Trading Symbol	AGGP
IQ Merger Arbitrage ETF | IQ Merger Arbitrage ETF
Risk/Return:
Trading Symbol	MNA
IQ Global Resources ETF | IQ Global Resources ETF
Risk/Return:
Trading Symbol	GRES
IQ Global Agribusiness Small Cap ETF | IQ Global Agribusiness Small Cap ETF
Risk/Return:
Trading Symbol	CROP
IQ U.S. Real Estate Small Cap ETF | IQ U.S. Real Estate Small Cap ETF
Risk/Return:
Trading Symbol	ROOF
IQ Fastest Growing Companies ETF | IQ Fastest Growing Companies ETF
Risk/Return:
Trading Symbol	GRWS
IQ Innovation Leaders ETF | IQ Innovation Leaders ETF
Risk/Return:
Trading Symbol	RD
IQ Chaikin U.S. Dividend Achievers ETF | IQ Chaikin U.S. Dividend Achievers ETF
Risk/Return:
Trading Symbol	CDVA
IQ Chaikin U.S. Large Cap ETF | IQ Chaikin U.S. Large Cap ETF
Risk/Return:
Trading Symbol	CLRG
IQ Chaikin U.S. Small Cap ETF | IQ Chaikin U.S. Small Cap ETF
Risk/Return:
Trading Symbol	CSML
IQ 50 Percent Hedged FTSE International ETF | IQ 50 Percent Hedged FTSE International ETF
Risk/Return:
Trading Symbol	HFXI
IQ 50 Percent Hedged FTSE Europe ETF | IQ 50 Percent Hedged FTSE Europe ETF
Risk/Return:
Trading Symbol	HFXE
IQ 50 Percent Hedged FTSE Japan ETF | IQ 50 Percent Hedged FTSE Japan ETF
Risk/Return:
Trading Symbol	HFXJ
IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF | IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF
Risk/Return:
Trading Symbol	PRHD
IQ S&P High Yield Low Volatility Bond ETF | IQ S&P High Yield Low Volatility Bond ETF
Risk/Return:
Trading Symbol	HYLV
IQ Candriam SRI US Equity ETF | IQ Candriam SRI US Equity ETF
Risk/Return:
Trading Symbol	SRIU
IQ Candriam SRI World Equity ETF | IQ Candriam SRI World Equity ETF
Risk/Return:
Trading Symbol	SRIW
IQ Candriam SRI International Equity ETF | IQ Candriam SRI International Equity ETF
Risk/Return:
Trading Symbol	SRIN
IQ Candriam SRI European Equity ETF | IQ Candriam SRI European Equity ETF
Risk/Return:
Trading Symbol	SRIE
IQ Candriam SRI Asia Pacific Equity ETF | IQ Candriam SRI Asia Pacific Equity ETF
Risk/Return:
Trading Symbol	SRIA

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IQ Hedge Multi-Strategy Tracker ETF

IQ Hedge Multi-Strategy Tracker ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Multi-Strategy Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Hedge Multi-Strategy Tracker ETF IQ Hedge Multi-Strategy Tracker ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.25%	[1]
Total Annual Fund Operating Expenses	1.01%	[1]
Expense Waiver/Reimbursement	0.22%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.79%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Hedge Multi-Strategy Tracker ETF | IQ Hedge Multi-Strategy Tracker ETF | USD ($)	81	300	536	1,216

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 164% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds that employ various hedge fund investment styles (the “Strategy”). These styles may include but are not limited to long/short equity, macro, market neutral, event-driven, fixed-income arbitrage, emerging markets and other strategies commonly used by hedge fund managers. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in ETFs and ETVs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Strategy generally seeks exposure to the following hedge fund investment styles:

• Event-Driven hedge funds typically invest in a combination of credit opportunities and event-driven equities. Within the credit-oriented portion, sub-strategies include long/short high yield credit (below investment grade corporate bonds or “junk” bonds), leveraged loans (bank debt, mezzanine, or self-oriented loans), capital structure arbitrage (debt vs. debt or debt vs. equity), and reorganization equity. Within the equity portion, sub-strategies include risk (or merger) arbitrage, holding company arbitrage, special situations and value equities where a change in management, significant product launch, or some other economic catalyst is expected to unlock shareholder wealth. Event-driven managers invest across multiple asset classes and may also seek to exploit shifts in economic cycles.

• Emerging Market hedge funds typically invest in financial instruments such as equities, sovereign and corporate debt issues and currencies of countries in “emerging” markets. Emerging countries are those in a transitional state from developing to developed.

• Fixed Income Arbitrage hedge funds typically employ strategies that seek to take advantage of price differentials and inefficiencies between related fixed-income securities that are related either economically or statistically. Such funds may limit volatility by hedging out interest rate risk and market exposure.

• Long/short hedge funds typically diversify their risks by limiting the net exposure to particular regions, industries, sectors and market capitalization bands, allowing them to focus on company-specific anomalies. At the same time, long/short managers often hedge against un-diversifiable risk, such as market risk (i.e., the returns of the overall market). Certain long/short managers focus on specific sectors, regions or industries, on particular investment styles, such as value or growth, or certain types of stocks, such as small or large.

• Macro hedge funds typically employ top-down macro analysis (e.g., political trends, macroeconomics, etc.) to identify dislocations in equity, fixed-income, currency and commodity markets that are expected to lead to large price movements.

• Market Neutral hedge funds typically invest in both long and short positions in stocks while minimizing exposure to the systematic components of risk. These market neutral strategies seek to have a zero “beta” (or “market”) exposure to one or more systematic risk factors including the overall market (as represented by the S&P 500 Index), economic sectors or industries, market capitalization, region and country. Market neutral strategies that effectively neutralize the market exposure are not impacted by directional moves in the market.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. small-capitalization equity;

• U.S. growth equity;

• U.S. value equity;

• Emerging market equity, debt and sovereign debt, including small-capitalization equity;

• Foreign equity (Europe, Australasia & Far East), including small-capitalization equity;

• U.S. and foreign preferred securities;

• U.S. investment grade corporate debt;

• U.S. government short- and intermediate-term maturity obligations;

• U.S. high yield (or “junk”) debt;

• U.S. Treasury Inflation Protection Securities (“TIPS”);

• U.S. mortgage-backed debt;

• U.S. convertible debt;

• U.S. floating rate bank loans;

• Municipal bonds;

• Foreign sovereign debt;

• Foreign currencies and currency futures;

• U.S. and foreign real estate investment trusts;

• Commodities; and

• The implied volatility of the S&P 500^® Index.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Floating Rate Bank Loan Risk. Floating rate loans are frequently rated below investment grade (commonly referred to as “junk bonds”) and are generally considered speculative because they present a greater risk of loss, including default, than higher quality debt securities. Moreover, such securities may, under certain circumstances, be less liquid than higher quality debt securities. Although certain floating rate loans are collateralized, there is no guarantee that the value of the collateral will be sufficient to repay the loan. In times of unusual or adverse market, economic or political conditions, floating rate loans may experience higher than normal default rates. In the event of a recession or serious credit event, among other eventualities, the value of floating rate loans may decline significantly. In addition, floating rate loans generally are subject to extended settlement periods. This may impair the ability to sell or realize the full value of a loan.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

• Municipal Bonds Risk. Municipal Bond risks include the ability of the issuer to repay the obligation, the relative lack of information about certain issuers, and the possibility of future tax and legislative changes, which could affect the market for and value of municipal securities.

• Preferred Stock Risk. Preferred stock is subject to many of the risks associated with debt securities, including interest rate risk. In addition, preferred stocks may not pay dividends, an issuer may suspend payment of dividends on preferred stock at any time, and in certain situations an issuer may call or redeem its preferred stock or convert it to common stock. To the extent that the Fund invests a substantial portion of its assets in convertible preferred stocks, declining common stock values may also cause the value of the Fund’s investments to decline.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Fund of Funds Composite Index is an equally weighted hedge fund index including over 650 domestic and off-shore funds of funds. The S&P 500^® Index is a broad-based unmanaged index of 500 stocks, which is designed to represent the equity market in general (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -0.23%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	4.80%	3Q/2010
Lowest Return	–2.67%	3Q/2015

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Hedge Multi-Strategy Tracker ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Hedge Multi-Strategy Tracker ETF		6.25%	2.42%	3.20%		Mar. 25, 2009
IQ Hedge Multi-Strategy Tracker ETF | Returns after taxes on distributions	[2]	6.25%	2.19%	2.93%
IQ Hedge Multi-Strategy Tracker ETF | Returns after taxes on distributions and sale of Fund shares	[2]	3.54%	1.77%	2.43%
IQ Hedge Multi-Strategy Index		7.23%	3.63%	4.17%
HFRI Fund of Funds Composite Index		7.77%	4.00%	4.02%	[3]
S&P 500® Index		21.10%	15.07%	16.34%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[2] IndexIQ Advisors LLC (the "Advisor") has contractually agreed until August 31, 2019, to waive a portion of the management fee equal to 0.22% of average daily net assets.

[1] The Fund commenced operations on March 25, 2009.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[3] HFRI Fund of Funds Composite Index is calculated from March 31, 2009. Performance information for the Fund in the table above also includes the performance of HFRI Fund of Funds Composite Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

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Label

Element

Value

IQ Hedge Multi-Strategy Tracker ETF

Risk/Return:

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Risk/Return [Heading]

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IQ Hedge Multi-Strategy Tracker ETF

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Multi-Strategy Index (the “Underlying Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 164% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

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164.00%

Expense Exchange Traded Fund Commissions [Text]

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Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

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Example.

Expense Example Narrative [Text Block]

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This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds that employ various hedge fund investment styles (the “Strategy”). These styles may include but are not limited to long/short equity, macro, market neutral, event-driven, fixed-income arbitrage, emerging markets and other strategies commonly used by hedge fund managers. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in ETFs and ETVs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Strategy generally seeks exposure to the following hedge fund investment styles:

• Event-Driven hedge funds typically invest in a combination of credit opportunities and event-driven equities. Within the credit-oriented portion, sub-strategies include long/short high yield credit (below investment grade corporate bonds or “junk” bonds), leveraged loans (bank debt, mezzanine, or self-oriented loans), capital structure arbitrage (debt vs. debt or debt vs. equity), and reorganization equity. Within the equity portion, sub-strategies include risk (or merger) arbitrage, holding company arbitrage, special situations and value equities where a change in management, significant product launch, or some other economic catalyst is expected to unlock shareholder wealth. Event-driven managers invest across multiple asset classes and may also seek to exploit shifts in economic cycles.

• Emerging Market hedge funds typically invest in financial instruments such as equities, sovereign and corporate debt issues and currencies of countries in “emerging” markets. Emerging countries are those in a transitional state from developing to developed.

• Fixed Income Arbitrage hedge funds typically employ strategies that seek to take advantage of price differentials and inefficiencies between related fixed-income securities that are related either economically or statistically. Such funds may limit volatility by hedging out interest rate risk and market exposure.

• Long/short hedge funds typically diversify their risks by limiting the net exposure to particular regions, industries, sectors and market capitalization bands, allowing them to focus on company-specific anomalies. At the same time, long/short managers often hedge against un-diversifiable risk, such as market risk (i.e., the returns of the overall market). Certain long/short managers focus on specific sectors, regions or industries, on particular investment styles, such as value or growth, or certain types of stocks, such as small or large.

• Macro hedge funds typically employ top-down macro analysis (e.g., political trends, macroeconomics, etc.) to identify dislocations in equity, fixed-income, currency and commodity markets that are expected to lead to large price movements.

• Market Neutral hedge funds typically invest in both long and short positions in stocks while minimizing exposure to the systematic components of risk. These market neutral strategies seek to have a zero “beta” (or “market”) exposure to one or more systematic risk factors including the overall market (as represented by the S&P 500 Index), economic sectors or industries, market capitalization, region and country. Market neutral strategies that effectively neutralize the market exposure are not impacted by directional moves in the market.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. small-capitalization equity;

• U.S. growth equity;

• U.S. value equity;

• Emerging market equity, debt and sovereign debt, including small-capitalization equity;

• Foreign equity (Europe, Australasia & Far East), including small-capitalization equity;

• U.S. and foreign preferred securities;

• U.S. investment grade corporate debt;

• U.S. government short- and intermediate-term maturity obligations;

• U.S. high yield (or “junk”) debt;

• U.S. Treasury Inflation Protection Securities (“TIPS”);

• U.S. mortgage-backed debt;

• U.S. convertible debt;

• U.S. floating rate bank loans;

• Municipal bonds;

• Foreign sovereign debt;

• Foreign currencies and currency futures;

• U.S. and foreign real estate investment trusts;

• Commodities; and

• The implied volatility of the S&P 500^® Index.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

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The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Floating Rate Bank Loan Risk. Floating rate loans are frequently rated below investment grade (commonly referred to as “junk bonds”) and are generally considered speculative because they present a greater risk of loss, including default, than higher quality debt securities. Moreover, such securities may, under certain circumstances, be less liquid than higher quality debt securities. Although certain floating rate loans are collateralized, there is no guarantee that the value of the collateral will be sufficient to repay the loan. In times of unusual or adverse market, economic or political conditions, floating rate loans may experience higher than normal default rates. In the event of a recession or serious credit event, among other eventualities, the value of floating rate loans may decline significantly. In addition, floating rate loans generally are subject to extended settlement periods. This may impair the ability to sell or realize the full value of a loan.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

• Municipal Bonds Risk. Municipal Bond risks include the ability of the issuer to repay the obligation, the relative lack of information about certain issuers, and the possibility of future tax and legislative changes, which could affect the market for and value of municipal securities.

• Preferred Stock Risk. Preferred stock is subject to many of the risks associated with debt securities, including interest rate risk. In addition, preferred stocks may not pay dividends, an issuer may suspend payment of dividends on preferred stock at any time, and in certain situations an issuer may call or redeem its preferred stock or convert it to common stock. To the extent that the Fund invests a substantial portion of its assets in convertible preferred stocks, declining common stock values may also cause the value of the Fund’s investments to decline.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Risk Lose Money [Text]

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Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Fund of Funds Composite Index is an equally weighted hedge fund index including over 650 domestic and off-shore funds of funds. The S&P 500^® Index is a broad-based unmanaged index of 500 stocks, which is designed to represent the equity market in general (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Additional Market Index [Text]

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HFRI Fund of Funds Composite Index is calculated from March 31, 2009. Performance information for the Fund in the table above also includes the performance of HFRI Fund of Funds Composite Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the “Since Inception” heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

Performance Availability Phone [Text]

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1-888-474-7725

Performance Availability Website Address [Text]

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nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -0.23%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	4.80%	3Q/2010
Lowest Return	–2.67%	3Q/2015

Year to Date Return, Label

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The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

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Jun. 30, 2018

Bar Chart, Year to Date Return

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(0.23%)

Highest Quarterly Return, Label

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Highest Return

Highest Quarterly Return, Date

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Sep. 30, 2010

Highest Quarterly Return

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4.80%

Lowest Quarterly Return, Label

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Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2015

Lowest Quarterly Return

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(2.67%)

Performance Table Heading

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Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

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After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

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Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

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In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Hedge Multi-Strategy Tracker ETF | IQ Hedge Multi-Strategy Index

Risk/Return:

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Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

7.23%

5 Years

rr_AverageAnnualReturnYear05

3.63%

Since Inception

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4.17%

^[1]

IQ Hedge Multi-Strategy Tracker ETF | HFRI Fund of Funds Composite Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

7.77%

5 Years

rr_AverageAnnualReturnYear05

4.00%

Since Inception

rr_AverageAnnualReturnSinceInception

4.02%

^[1],[2]

IQ Hedge Multi-Strategy Tracker ETF | S&P 500® Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

21.10%

5 Years

rr_AverageAnnualReturnYear05

15.07%

Since Inception

rr_AverageAnnualReturnSinceInception

16.34%

^[1]

IQ Hedge Multi-Strategy Tracker ETF | IQ Hedge Multi-Strategy Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.25%

^[3]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.01%

^[3]

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.22%

^[4]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.79%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 81

3 Years

rr_ExpenseExampleYear03

300

5 Years

rr_ExpenseExampleYear05

536

10 Years

rr_ExpenseExampleYear10

$ 1,216

Annual Return 2010

rr_AnnualReturn2010

2.42%

Annual Return 2011

rr_AnnualReturn2011

0.26%

Annual Return 2012

rr_AnnualReturn2012

4.06%

Annual Return 2013

rr_AnnualReturn2013

5.16%

Annual Return 2014

rr_AnnualReturn2014

2.77%

Annual Return 2015

rr_AnnualReturn2015

(2.51%)

Annual Return 2016

rr_AnnualReturn2016

0.68%

Annual Return 2017

rr_AnnualReturn2017

6.25%

1 Year

rr_AverageAnnualReturnYear01

6.25%

5 Years

rr_AverageAnnualReturnYear05

2.42%

Since Inception

rr_AverageAnnualReturnSinceInception

3.20%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 25, 2009

IQ Hedge Multi-Strategy Tracker ETF | IQ Hedge Multi-Strategy Tracker ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.25%

^[5]

5 Years

rr_AverageAnnualReturnYear05

2.19%

^[5]

Since Inception

rr_AverageAnnualReturnSinceInception

2.93%

^[1],[5]

IQ Hedge Multi-Strategy Tracker ETF | IQ Hedge Multi-Strategy Tracker ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.54%

^[5]

5 Years

rr_AverageAnnualReturnYear05

1.77%

^[5]

Since Inception

rr_AverageAnnualReturnSinceInception

2.43%

^[1],[5]

[1] The Fund commenced operations on March 25, 2009.

[2] HFRI Fund of Funds Composite Index is calculated from March 31, 2009. Performance information for the Fund in the table above also includes the performance of HFRI Fund of Funds Composite Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

[3] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[4] IndexIQ Advisors LLC (the "Advisor") has contractually agreed until August 31, 2019, to waive a portion of the management fee equal to 0.22% of average daily net assets.

[5] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Hedge Macro Tracker ETF

IQ Hedge Macro Tracker ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Macro Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Hedge Macro Tracker ETF IQ Hedge Macro Tracker ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	none
Acquired Fund Fees & Expenses	0.24%	[1]
Total Annual Fund Operating Expenses	0.99%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Hedge Macro Tracker ETF | IQ Hedge Macro Tracker ETF | USD ($)	101	315	547	1,213

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 152% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of a combination of hedge funds pursuing a macro strategy and hedge funds pursuing an emerging markets strategy (the “Strategy”). Macro hedge funds typically employ top-down macro analysis (e.g., political trends, macroeconomics, etc.) to identify dislocations in equity, fixed-income, currency and commodity markets that are expected to lead to large price movements. Emerging Market hedge funds typically invest in financial instruments such as equities, sovereign and corporate debt issues and currencies of countries in “emerging” markets. Emerging countries are those in a transitional state from developing to developed. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in ETFs and ETVs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. small-capitalization equity;

• Emerging market equity, debt and sovereign debt, including small-capitalization equity;

• U.S. investment grade corporate debt;

• U.S. government short- and intermediate-term maturity obligations;

• Foreign sovereign debt, including small-capitalization equity;

• Foreign currencies and currency futures;

• U.S. and foreign real estate investment trusts;

• Commodities; and

• The implied volatility of the S&P 500^® Index.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Macro (Total) Index is an equally weighted index of hedge funds that employ macro strategies. The HFRI Fund of Funds Composite Index is an equally weighted hedge fund index including over 650 domestic and off-shore funds of funds. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was –1.60%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	6.05%	3Q/2010
Lowest Return	–6.45%	3Q/2011

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Hedge Macro Tracker ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Hedge Macro Tracker ETF		8.32%	0.06%	1.59%		Jun. 09, 2009
IQ Hedge Macro Tracker ETF | Returns after taxes on distributions	[2]	8.32%	(0.19%)	1.31%
IQ Hedge Macro Tracker ETF | Returns after taxes on distributions and sale of Fund shares	[2]	4.71%	(0.07%)	1.14%
IQ Hedge Macro Index		9.41%	0.90%	2.34%
HFRI Macro (Total) Index	[3]	2.20%	1.39%	1.42%
MSCI World Index		22.40%	11.64%	11.61%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on June 9, 2009.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[3] HFRI Macro (Total) Index is calculated from June 1, 2009. Performance information for the Fund in the table above also includes the performance of HFRI Macro (Total) Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

XML

Label

Element

Value

IQ Hedge Macro Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Hedge Macro Tracker ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Macro Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 152% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

152.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of a combination of hedge funds pursuing a macro strategy and hedge funds pursuing an emerging markets strategy (the “Strategy”). Macro hedge funds typically employ top-down macro analysis (e.g., political trends, macroeconomics, etc.) to identify dislocations in equity, fixed-income, currency and commodity markets that are expected to lead to large price movements. Emerging Market hedge funds typically invest in financial instruments such as equities, sovereign and corporate debt issues and currencies of countries in “emerging” markets. Emerging countries are those in a transitional state from developing to developed. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in ETFs and ETVs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. small-capitalization equity;

• Emerging market equity, debt and sovereign debt, including small-capitalization equity;

• U.S. investment grade corporate debt;

• U.S. government short- and intermediate-term maturity obligations;

• Foreign sovereign debt, including small-capitalization equity;

• Foreign currencies and currency futures;

• U.S. and foreign real estate investment trusts;

• Commodities; and

• The implied volatility of the S&P 500^® Index.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Macro (Total) Index is an equally weighted index of hedge funds that employ macro strategies. The HFRI Fund of Funds Composite Index is an equally weighted hedge fund index including over 650 domestic and off-shore funds of funds. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

HFRI Macro (Total) Index is calculated from June 1, 2009. Performance information for the Fund in the table above also includes the performance of HFRI Macro (Total) Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the “Since Inception” heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was –1.60%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	6.05%	3Q/2010
Lowest Return	–6.45%	3Q/2011

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(1.60%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2010

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.05%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(6.45%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Hedge Macro Tracker ETF | IQ Hedge Macro Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

9.41%

5 Years

rr_AverageAnnualReturnYear05

0.90%

Since Inception

rr_AverageAnnualReturnSinceInception

2.34%

^[1]

IQ Hedge Macro Tracker ETF | HFRI Macro (Total) Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

2.20%

^[2]

5 Years

rr_AverageAnnualReturnYear05

1.39%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

1.42%

^[1],[2]

IQ Hedge Macro Tracker ETF | MSCI World Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

22.40%

5 Years

rr_AverageAnnualReturnYear05

11.64%

Since Inception

rr_AverageAnnualReturnSinceInception

11.61%

^[1]

IQ Hedge Macro Tracker ETF | IQ Hedge Macro Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

none

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.24%

^[3]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.99%

^[3]

1 Year

rr_ExpenseExampleYear01

$ 101

3 Years

rr_ExpenseExampleYear03

315

5 Years

rr_ExpenseExampleYear05

547

10 Years

rr_ExpenseExampleYear10

$ 1,213

Annual Return 2010

rr_AnnualReturn2010

4.10%

Annual Return 2011

rr_AnnualReturn2011

(3.42%)

Annual Return 2012

rr_AnnualReturn2012

5.84%

Annual Return 2013

rr_AnnualReturn2013

(3.27%)

Annual Return 2014

rr_AnnualReturn2014

(1.30%)

Annual Return 2015

rr_AnnualReturn2015

(4.11%)

Annual Return 2016

rr_AnnualReturn2016

1.17%

Annual Return 2017

rr_AnnualReturn2017

8.32%

1 Year

rr_AverageAnnualReturnYear01

8.32%

5 Years

rr_AverageAnnualReturnYear05

0.06%

Since Inception

rr_AverageAnnualReturnSinceInception

1.59%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 09, 2009

IQ Hedge Macro Tracker ETF | IQ Hedge Macro Tracker ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.32%

^[4]

5 Years

rr_AverageAnnualReturnYear05

(0.19%)

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

1.31%

^[1],[4]

IQ Hedge Macro Tracker ETF | IQ Hedge Macro Tracker ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.71%

^[4]

5 Years

rr_AverageAnnualReturnYear05

(0.07%)

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

1.14%

^[1],[4]

[1] The Fund commenced operations on June 9, 2009.

[2] HFRI Macro (Total) Index is calculated from June 1, 2009. Performance information for the Fund in the table above also includes the performance of HFRI Macro (Total) Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

[3] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Hedge Market Neutral Tracker ETF

IQ Hedge Market Neutral Tracker ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Market Neutral Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Hedge Market Neutral Tracker ETF IQ Hedge Market Neutral Tracker ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.25%	[1]
Total Annual Fund Operating Expenses	1.01%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates.

Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Hedge Market Neutral Tracker ETF | IQ Hedge Market Neutral Tracker ETF | USD ($)	103	322	558	1,236

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 165% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds pursuing a market neutral strategy (the “Strategy”). Market Neutral hedge funds typically invest in both long and short positions in stocks while minimizing exposure to the systematic components of risk. These market neutral strategies seek to have a zero “beta” (or “market”) exposure to one or more systematic risk factors including the overall market (as represented by the S&P 500 Index), economic sectors or industries, market capitalization, region and country. Market neutral strategies that effectively neutralize the market exposure are not impacted by directional moves in the market. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in ETFs and ETVs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. small-capitalization equity;

• U.S. growth equity;

• U.S. value equity;

• Emerging market equity;

• Foreign equity (Europe, Australasia & Far East);

• U.S. investment grade corporate debt;

• U.S. government short- and intermediate-term maturity obligations;

• U.S. high yield (or “junk”) debt;

• U.S. Treasury Inflation Protection Securities (“TIPS”);

• U.S. mortgage-backed debt;

• U.S. convertible debt;

• U.S. floating rate bank loans; and

• Foreign currencies and currency futures.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Equity Market Neutral Index is an equally weighted hedge fund index including both Factor Based and Statistical Arbitrage/Trading strategies. The Bloomberg Barclays U.S. Short Treasury Bond Index measures the performance of public obligations of the Treasury that have a remaining maturing of between 1 and 12 months.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -0.20%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	2.25%	3Q/2013
Lowest Return	–1.81%	2Q/2013

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Hedge Market Neutral Tracker ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Hedge Market Neutral Tracker ETF		2.42%	1.15%	1.31%		Oct. 04, 2012
IQ Hedge Market Neutral Tracker ETF | Returns after taxes on distributions	[2]	2.42%	0.88%	1.03%
IQ Hedge Market Neutral Tracker ETF | Returns after taxes on distributions and sale of Fund shares	[2]	1.37%	0.77%	0.90%
IQ Hedge Market Neutral Index		3.29%	2.25%	2.39%
HFRI Equity Market Neutral Index		4.88%	4.17%	4.15%	[3]
Bloomberg Barclays U.S. Short Treasury Bond Index		0.81%	0.34%	0.33%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on October 4, 2012.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[3] HFRI Equity Market Neutral Index is calculated from September 30, 2012. Performance information for the Fund in the table above also includes the performance of HFRI Equity Market Neutral Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

XML

Label

Element

Value

IQ Hedge Market Neutral Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

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IQ Hedge Market Neutral Tracker ETF

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Market Neutral Index (the “Underlying Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 165% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

165.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates.

Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds pursuing a market neutral strategy (the “Strategy”). Market Neutral hedge funds typically invest in both long and short positions in stocks while minimizing exposure to the systematic components of risk. These market neutral strategies seek to have a zero “beta” (or “market”) exposure to one or more systematic risk factors including the overall market (as represented by the S&P 500 Index), economic sectors or industries, market capitalization, region and country. Market neutral strategies that effectively neutralize the market exposure are not impacted by directional moves in the market. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in ETFs and ETVs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. small-capitalization equity;

• U.S. growth equity;

• U.S. value equity;

• Emerging market equity;

• Foreign equity (Europe, Australasia & Far East);

• U.S. investment grade corporate debt;

• U.S. government short- and intermediate-term maturity obligations;

• U.S. high yield (or “junk”) debt;

• U.S. Treasury Inflation Protection Securities (“TIPS”);

• U.S. mortgage-backed debt;

• U.S. convertible debt;

• U.S. floating rate bank loans; and

• Foreign currencies and currency futures.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Equity Market Neutral Index is an equally weighted hedge fund index including both Factor Based and Statistical Arbitrage/Trading strategies. The Bloomberg Barclays U.S. Short Treasury Bond Index measures the performance of public obligations of the Treasury that have a remaining maturing of between 1 and 12 months.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

HFRI Equity Market Neutral Index is calculated from September 30, 2012. Performance information for the Fund in the table above also includes the performance of HFRI Equity Market Neutral Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the “Since Inception” heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -0.20%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	2.25%	3Q/2013
Lowest Return	–1.81%	2Q/2013

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(0.20%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2013

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

2.25%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2013

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(1.81%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Hedge Market Neutral Tracker ETF | IQ Hedge Market Neutral Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

3.29%

5 Years

rr_AverageAnnualReturnYear05

2.25%

Since Inception

rr_AverageAnnualReturnSinceInception

2.39%

^[1]

IQ Hedge Market Neutral Tracker ETF | HFRI Equity Market Neutral Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

4.88%

5 Years

rr_AverageAnnualReturnYear05

4.17%

Since Inception

rr_AverageAnnualReturnSinceInception

4.15%

^[1],[2]

IQ Hedge Market Neutral Tracker ETF | Bloomberg Barclays U.S. Short Treasury Bond Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

0.81%

5 Years

rr_AverageAnnualReturnYear05

0.34%

Since Inception

rr_AverageAnnualReturnSinceInception

0.33%

^[1]

IQ Hedge Market Neutral Tracker ETF | IQ Hedge Market Neutral Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.25%

^[3]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.01%

^[3]

1 Year

rr_ExpenseExampleYear01

$ 103

3 Years

rr_ExpenseExampleYear03

322

5 Years

rr_ExpenseExampleYear05

558

10 Years

rr_ExpenseExampleYear10

$ 1,236

Annual Return 2013

rr_AnnualReturn2013

1.84%

Annual Return 2014

rr_AnnualReturn2014

0.70%

Annual Return 2015

rr_AnnualReturn2015

(1.38%)

Annual Return 2016

rr_AnnualReturn2016

2.25%

Annual Return 2017

rr_AnnualReturn2017

2.42%

1 Year

rr_AverageAnnualReturnYear01

2.42%

5 Years

rr_AverageAnnualReturnYear05

1.15%

Since Inception

rr_AverageAnnualReturnSinceInception

1.31%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 04, 2012

IQ Hedge Market Neutral Tracker ETF | IQ Hedge Market Neutral Tracker ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.42%

^[4]

5 Years

rr_AverageAnnualReturnYear05

0.88%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

1.03%

^[1],[4]

IQ Hedge Market Neutral Tracker ETF | IQ Hedge Market Neutral Tracker ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.37%

^[4]

5 Years

rr_AverageAnnualReturnYear05

0.77%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

0.90%

^[1],[4]

[1] The Fund commenced operations on October 4, 2012.

[2] HFRI Equity Market Neutral Index is calculated from September 30, 2012. Performance information for the Fund in the table above also includes the performance of HFRI Equity Market Neutral Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

[3] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Hedge Long/Short Tracker ETF

IQ Hedge Long/Short Tracker ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Long/Short Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Hedge Long/Short Tracker ETF IQ Hedge Long/Short Tracker ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.28%	[1]
Total Annual Fund Operating Expenses	1.04%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates.

Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Hedge Long/Short Tracker ETF | IQ Hedge Long/Short Tracker ETF | USD ($)	106	331	574	1,271

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 77% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange -traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds pursuing a long/short strategy (the “Strategy”). Long/short hedge funds typically diversify their risks by limiting the net exposure to particular regions, industries, sectors and market capitalization bands, allowing them to focus on company-specific anomalies. At the same time, long/short managers often hedge against un-diversifiable risk, such as market risk (i.e., the returns of the overall market). Certain long/short managers focus on specific sectors, regions or industries, on particular investment styles, such as value or growth, or certain types of stocks, such as small or large. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in securities, including, primarily, ETPs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. small-capitalization equity;

• U.S. growth equity;

• U.S. value equity;

• Emerging market equity;

• Foreign equity (Europe, Australasia & Far East);

• U.S. investment grade corporate debt; and

• U.S. floating rate bank loans.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange-Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Floating Rate Bank Loan Risk. Floating rate loans are frequently rated below investment grade (commonly referred to as “junk bonds”) and are generally considered speculative because they present a greater risk of loss, including default, than higher quality debt securities. Moreover, such securities may, under certain circumstances, be less liquid than higher quality debt securities. Although certain floating rate loans are collateralized, there is no guarantee that the value of the collateral will be sufficient to repay the loan. In times of unusual or adverse market, economic or political conditions, floating rate loans may experience higher than normal default rates. In the event of a recession or serious credit event, among other eventualities, the value of floating rate loans may decline significantly. In addition, floating rate loans generally are subject to extended settlement periods. This may impair the ability to sell or realize the full value of a loan.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Equity Hedge Index is an equally weighted hedge fund index including primarily equity and equity derivative securities. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -0.18%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	3.70%	1Q/2017
Lowest Return	0.11%	4Q/2016

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Hedge Long/Short Tracker ETF		1 Year	Since Inception	[1]	Inception Date
IQ Hedge Long/Short Tracker ETF		13.36%	4.29%		Mar. 24, 2015
IQ Hedge Long/Short Tracker ETF | Returns after taxes on distributions	[2]	13.26%	3.95%
IQ Hedge Long/Short Tracker ETF | Returns after taxes on distributions and sale of Fund shares	[2]	7.65%	3.17%
IQ Hedge Long/Short Index		14.49%	5.61%
HFRI Equity Hedge Index		13.29%	5.56%	[3]
MSCI World Index		22.40%	8.35%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on March 24, 2015.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[3] HFRI Equity Hedge Index is calculated from March 31, 2015. Performance information for the Fund in the table above also includes the performance of HFRI Equity Hedge Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

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Label

Element

Value

IQ Hedge Long/Short Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Hedge Long/Short Tracker ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Long/Short Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 77% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

77.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates.

Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange -traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds pursuing a long/short strategy (the “Strategy”). Long/short hedge funds typically diversify their risks by limiting the net exposure to particular regions, industries, sectors and market capitalization bands, allowing them to focus on company-specific anomalies. At the same time, long/short managers often hedge against un-diversifiable risk, such as market risk (i.e., the returns of the overall market). Certain long/short managers focus on specific sectors, regions or industries, on particular investment styles, such as value or growth, or certain types of stocks, such as small or large. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in securities, including, primarily, ETPs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. small-capitalization equity;

• U.S. growth equity;

• U.S. value equity;

• Emerging market equity;

• Foreign equity (Europe, Australasia & Far East);

• U.S. investment grade corporate debt; and

• U.S. floating rate bank loans.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange -traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange-Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Floating Rate Bank Loan Risk. Floating rate loans are frequently rated below investment grade (commonly referred to as “junk bonds”) and are generally considered speculative because they present a greater risk of loss, including default, than higher quality debt securities. Moreover, such securities may, under certain circumstances, be less liquid than higher quality debt securities. Although certain floating rate loans are collateralized, there is no guarantee that the value of the collateral will be sufficient to repay the loan. In times of unusual or adverse market, economic or political conditions, floating rate loans may experience higher than normal default rates. In the event of a recession or serious credit event, among other eventualities, the value of floating rate loans may decline significantly. In addition, floating rate loans generally are subject to extended settlement periods. This may impair the ability to sell or realize the full value of a loan.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Equity Hedge Index is an equally weighted hedge fund index including primarily equity and equity derivative securities. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

HFRI Equity Hedge Index is calculated from March 31, 2015. Performance information for the Fund in the table above also includes the performance of HFRI Equity Hedge Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the “Since Inception” heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -0.18%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	3.70%	1Q/2017
Lowest Return	0.11%	4Q/2016

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(0.18%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2017

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.70%

Lowest Quarterly Return, Label

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Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2016

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

0.11%

Performance Table Heading

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Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Hedge Long/Short Tracker ETF | IQ Hedge Long/Short Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

14.49%

Since Inception

rr_AverageAnnualReturnSinceInception

5.61%

^[1]

IQ Hedge Long/Short Tracker ETF | HFRI Equity Hedge Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

13.29%

Since Inception

rr_AverageAnnualReturnSinceInception

5.56%

^[1],[2]

IQ Hedge Long/Short Tracker ETF | MSCI World Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

22.40%

Since Inception

rr_AverageAnnualReturnSinceInception

8.35%

^[1]

IQ Hedge Long/Short Tracker ETF | IQ Hedge Long/Short Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.28%

^[3]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.04%

^[3]

1 Year

rr_ExpenseExampleYear01

$ 106

3 Years

rr_ExpenseExampleYear03

331

5 Years

rr_ExpenseExampleYear05

574

10 Years

rr_ExpenseExampleYear10

$ 1,271

Annual Return 2016

rr_AnnualReturn2016

4.44%

Annual Return 2017

rr_AnnualReturn2017

13.36%

1 Year

rr_AverageAnnualReturnYear01

13.36%

Since Inception

rr_AverageAnnualReturnSinceInception

4.29%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 24, 2015

IQ Hedge Long/Short Tracker ETF | IQ Hedge Long/Short Tracker ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.26%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

3.95%

^[1],[4]

IQ Hedge Long/Short Tracker ETF | IQ Hedge Long/Short Tracker ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.65%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

3.17%

^[1],[4]

[1] The Fund commenced operations on March 24, 2015.

[2] HFRI Equity Hedge Index is calculated from March 31, 2015. Performance information for the Fund in the table above also includes the performance of HFRI Equity Hedge Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

[3] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Hedge Event-Driven Tracker ETF

IQ Hedge Event-Driven Tracker ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Event-Driven Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Hedge Event-Driven Tracker ETF IQ Hedge Event-Driven Tracker ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.35%	[1]
Total Annual Fund Operating Expenses	1.11%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates.

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Hedge Event-Driven Tracker ETF | IQ Hedge Event-Driven Tracker ETF | USD ($)	113	353	612	1,352

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 41% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds pursuing an event-driven strategy (the “Strategy”). Event-Driven hedge funds typically invest in a combination of credit opportunities and event-driven equities. Within the credit-oriented portion, sub-strategies include long/short high yield credit (below investment grade corporate bonds or “junk” bonds), leveraged loans (bank debt, mezzanine, or self-oriented loans), capital structure arbitrage (debt vs. debt or debt vs. equity), and reorganization equity. Within the equity portion, sub-strategies include risk (or merger) arbitrage, holding company arbitrage, special situations and value equities where a change in management, significant product launch, or some other economic catalyst is expected to unlock shareholder wealth. Event-Driven managers invest across multiple asset classes and may also seek to exploit shifts in economic cycles. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in securities, including, primarily, ETPs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• Emerging market equity;

• U.S. government short- and intermediate-term maturity obligations;

• U.S. mortgage-backed debt;

• U.S. investment grade corporate debt; and

• U.S. convertible debt.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange-Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Floating Rate Loans Risk. Floating rate loans incur some of the same risks as other debt securities, such as prepayment risk, credit risk, interest rate risk and risk found with high-yield securities. Floating rate loans are subject to the risk that the scheduled interest or principal payments will not be paid. Lower-quality loans (those of less than investment grade quality) involve greater risk of default on interest and principal payments than higher quality loans. In the event that a non-payment occurs, the value of that obligation likely will decline. Generally, the lower the rating category, the more risky the investment. Floating rate loans are often issued in connection with a financing or corporate action (such as leveraged buyout loans, leveraged recapitalizations and other types of acquisition financing). In such highly leveraged transactions, the borrower assumes large amounts of debt in order to have the financial resources to attempt to achieve its business objectives. As such, floating rate loans are usually part of highly leveraged transactions and involve a significant risk that the borrower may default or go into bankruptcy. In times of unusual or adverse market, economic or political conditions, floating rate loans may experience higher than normal default rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Event Driven Index is designed to be representative of the overall composition of the hedge fund universe implementing an event driven strategy. The Bloomberg Barclays U.S. Aggregate Bond Index is a broad-based benchmark that measures the investment-grade, U.S. dollar-denominated, fixed-rate taxable bond market, including Treasuries, government-related and corporate securities, mortgage-backed securities (agency fixed-rate and hybrid adjustable rate mortgage pass-throughs), asset-backed securities, and commercial mortgage-backed securities.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was 1.64%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	3.65%	1Q/2017
Lowest Return	–1.01%	4Q/2016

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Hedge Event-Driven Tracker ETF		1 Year	Since Inception	[1]	Inception Date
IQ Hedge Event-Driven Tracker ETF		8.12%	3.92%		Mar. 24, 2015
IQ Hedge Event-Driven Tracker ETF | Returns after taxes on distributions	[2]	7.20%	3.00%
IQ Hedge Event-Driven Tracker ETF | Returns after taxes on distributions and sale of Fund shares	[2]	4.70%	2.63%
IQ Hedge Event Driven Index		8.84%	4.61%
HFRI Event Driven Index		7.59%	4.44%	[3]
Bloomberg Barclays U.S. Aggregate Bond Index		3.54%	1.85%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on March 24, 2015.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[3] HFRI Event Driven Index is calculated from March 31, 2015. Performance information for the Fund in the table above also includes the performance of HFRI Event Driven Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

XML

Label

Element

Value

IQ Hedge Event-Driven Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

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IQ Hedge Event-Driven Tracker ETF

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Hedge Event-Driven Index (the “Underlying Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 41% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

41.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates.

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns of hedge funds that are non-idiosyncratic, or unrelated to manager skill) of hedge funds pursuing an event-driven strategy (the “Strategy”). Event-Driven hedge funds typically invest in a combination of credit opportunities and event-driven equities. Within the credit-oriented portion, sub-strategies include long/short high yield credit (below investment grade corporate bonds or “junk” bonds), leveraged loans (bank debt, mezzanine, or self-oriented loans), capital structure arbitrage (debt vs. debt or debt vs. equity), and reorganization equity. Within the equity portion, sub-strategies include risk (or merger) arbitrage, holding company arbitrage, special situations and value equities where a change in management, significant product launch, or some other economic catalyst is expected to unlock shareholder wealth. Event-Driven managers invest across multiple asset classes and may also seek to exploit shifts in economic cycles. The Fund does not invest in hedge funds, and the Underlying Index does not include hedge funds as Underlying Index Components. The Fund is not a fund of hedge funds.

The Underlying Index may include both long and short positions in securities, including, primarily, ETPs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that hedge fund returns, when aggregated among hedge funds with similar investment styles, display over time significant exposures to a set of common investment strategies and asset classes. By creating an index that has similar exposures to the same investment strategies and asset classes as hedge funds generally, IndexIQ seeks to replicate the beta return characteristics of hedge funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• Emerging market equity;

• U.S. government short- and intermediate-term maturity obligations;

• U.S. mortgage-backed debt;

• U.S. investment grade corporate debt; and

• U.S. convertible debt.

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of distinct hedge fund investment styles.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange-Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Market Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Floating Rate Loans Risk. Floating rate loans incur some of the same risks as other debt securities, such as prepayment risk, credit risk, interest rate risk and risk found with high-yield securities. Floating rate loans are subject to the risk that the scheduled interest or principal payments will not be paid. Lower-quality loans (those of less than investment grade quality) involve greater risk of default on interest and principal payments than higher quality loans. In the event that a non-payment occurs, the value of that obligation likely will decline. Generally, the lower the rating category, the more risky the investment. Floating rate loans are often issued in connection with a financing or corporate action (such as leveraged buyout loans, leveraged recapitalizations and other types of acquisition financing). In such highly leveraged transactions, the borrower assumes large amounts of debt in order to have the financial resources to attempt to achieve its business objectives. As such, floating rate loans are usually part of highly leveraged transactions and involve a significant risk that the borrower may default or go into bankruptcy. In times of unusual or adverse market, economic or political conditions, floating rate loans may experience higher than normal default rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI Event Driven Index is designed to be representative of the overall composition of the hedge fund universe implementing an event driven strategy. The Bloomberg Barclays U.S. Aggregate Bond Index is a broad-based benchmark that measures the investment-grade, U.S. dollar-denominated, fixed-rate taxable bond market, including Treasuries, government-related and corporate securities, mortgage-backed securities (agency fixed-rate and hybrid adjustable rate mortgage pass-throughs), asset-backed securities, and commercial mortgage-backed securities.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

HFRI Event Driven Index is calculated from March 31, 2015. Performance information for the Fund in the table above also includes the performance of HFRI Event Driven Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the “Since Inception” heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was 1.64%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	3.65%	1Q/2017
Lowest Return	–1.01%	4Q/2016

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

1.64%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2017

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.65%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2016

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(1.01%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Hedge Event-Driven Tracker ETF | IQ Hedge Event Driven Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

8.84%

Since Inception

rr_AverageAnnualReturnSinceInception

4.61%

^[1]

IQ Hedge Event-Driven Tracker ETF | HFRI Event Driven Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

7.59%

Since Inception

rr_AverageAnnualReturnSinceInception

4.44%

^[1],[2]

IQ Hedge Event-Driven Tracker ETF | Bloomberg Barclays U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

3.54%

Since Inception

rr_AverageAnnualReturnSinceInception

1.85%

^[1]

IQ Hedge Event-Driven Tracker ETF | IQ Hedge Event-Driven Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.35%

^[3]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.11%

^[3]

1 Year

rr_ExpenseExampleYear01

$ 113

3 Years

rr_ExpenseExampleYear03

353

5 Years

rr_ExpenseExampleYear05

612

10 Years

rr_ExpenseExampleYear10

$ 1,352

Annual Return 2016

rr_AnnualReturn2016

5.65%

Annual Return 2017

rr_AnnualReturn2017

8.12%

1 Year

rr_AverageAnnualReturnYear01

8.12%

Since Inception

rr_AverageAnnualReturnSinceInception

3.92%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 24, 2015

IQ Hedge Event-Driven Tracker ETF | IQ Hedge Event-Driven Tracker ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.20%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

3.00%

^[1],[4]

IQ Hedge Event-Driven Tracker ETF | IQ Hedge Event-Driven Tracker ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.70%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

2.63%

^[1],[4]

[1] The Fund commenced operations on March 24, 2015.

[2] HFRI Event Driven Index is calculated from March 31, 2015. Performance information for the Fund in the table above also includes the performance of HFRI Event Driven Index. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

[3] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Real Return ETF

IQ Real Return ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Real Return Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Real Return ETF IQ Real Return ETF
Management Fee	0.48%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.23%	[1]
Total Annual Fund Operating Expenses	0.72%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Real Return ETF | IQ Real Return ETF | USD ($)	74	230	401	894

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 101% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with the rules-based methodology of such Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index. The Underlying Index seeks to provide investors with a hedge against the inflation rate by providing a “real return” or a return above the rate of inflation, as represented by the CPI (the “Strategy”). The CPI, or the Consumer Price Index, which is published by the Bureau of Labor Statistics, is a measure of the average change in prices over time of goods and services purchased by households. The CPI is reported with monthly frequency, but due to seasonality and other factors the monthly change in the CPI is reported both as the 1-month change and also on a rolling 12-month basis (the “Rolling 12-month CPI Returns”). It is the Rolling 12-month CPI Returns, not the monthly returns of the CPI, that the Underlying Index incorporates into its construction process.

The Underlying Index includes exposures to asset classes whose returns incorporate inflation expectations in an attempt to achieve its investment objective. This is based on the premise that capital market returns tend to be forward looking and anticipate economic developments, including inflation expectations. Since the Underlying Index’s objective is to provide a “real return,” as described above, the index construction process involves adding a real return target over and above the CPI returns and using the resulting “nominal returns” (i.e., inflation plus real return) to determine the weights of the Underlying Index Components.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large capitalization equity;

• U.S. small capitalization equity;

• Foreign equity (Europe, Australasia & Far East);

• U.S. government short-, intermediate-, and long-term maturity obligations;

• Foreign currencies and currency futures;

• U.S. real estate; and

• Commodities.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and another broad measure of market performance. The Barclays Capital U.S. Short Treasury Bond Index measures the performance of public obligations of the U.S. Treasury that have a remaining maturity of between 1 and 12 months.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was 0.81%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	1.78%	3Q/2011
Lowest Return	–2.76%	2Q/2013

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Real Return ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Real Return ETF		3.07%	1.09%	1.35%		Oct. 27, 2009
IQ Real Return ETF | Returns after taxes on distributions	[2]	2.78%	1.02%	1.30%
IQ Real Return ETF | Returns after taxes on distributions and sale of Fund shares	[2]	1.92%	0.83%	1.03%
IQ Real Return Index		3.23%	1.44%	1.78%
Bloomberg Barclays U.S. Short Treasury Bond Index		0.81%	0.34%	0.29%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on October 27, 2009.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ Real Return ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Real Return ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Real Return Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 101% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

101.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with the rules-based methodology of such Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index. The Underlying Index seeks to provide investors with a hedge against the inflation rate by providing a “real return” or a return above the rate of inflation, as represented by the CPI (the “Strategy”). The CPI, or the Consumer Price Index, which is published by the Bureau of Labor Statistics, is a measure of the average change in prices over time of goods and services purchased by households. The CPI is reported with monthly frequency, but due to seasonality and other factors the monthly change in the CPI is reported both as the 1-month change and also on a rolling 12-month basis (the “Rolling 12-month CPI Returns”). It is the Rolling 12-month CPI Returns, not the monthly returns of the CPI, that the Underlying Index incorporates into its construction process.

The Underlying Index includes exposures to asset classes whose returns incorporate inflation expectations in an attempt to achieve its investment objective. This is based on the premise that capital market returns tend to be forward looking and anticipate economic developments, including inflation expectations. Since the Underlying Index’s objective is to provide a “real return,” as described above, the index construction process involves adding a real return target over and above the CPI returns and using the resulting “nominal returns” (i.e., inflation plus real return) to determine the weights of the Underlying Index Components.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large capitalization equity;

• U.S. small capitalization equity;

• Foreign equity (Europe, Australasia & Far East);

• U.S. government short-, intermediate-, and long-term maturity obligations;

• Foreign currencies and currency futures;

• U.S. real estate; and

• Commodities.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with the rules-based methodology of such Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of a Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the underlying ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Commodity Risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by changes in overall market movements, changes in interest rates, events affecting a particular industry or commodity and international economic, political and regulatory developments.

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• Real Estate Investment Risks. When an ETP invests in companies that invest in real estate it will be exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

• Small Capitalization Companies Risk. The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and another broad measure of market performance. The Barclays Capital U.S. Short Treasury Bond Index measures the performance of public obligations of the U.S. Treasury that have a remaining maturity of between 1 and 12 months.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and another broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was 0.81%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	1.78%	3Q/2011
Lowest Return	–2.76%	2Q/2013

Year to Date Return, Label

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The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

0.81%

Highest Quarterly Return, Label

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Highest Return

Highest Quarterly Return, Date

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Sep. 30, 2011

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

1.78%

Lowest Quarterly Return, Label

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Lowest Return

Lowest Quarterly Return, Date

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Jun. 30, 2013

Lowest Quarterly Return

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(2.76%)

Performance Table Heading

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Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

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After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Real Return ETF | IQ Real Return Index

Risk/Return:

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Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

3.23%

5 Years

rr_AverageAnnualReturnYear05

1.44%

Since Inception

rr_AverageAnnualReturnSinceInception

1.78%

^[1]

IQ Real Return ETF | Bloomberg Barclays U.S. Short Treasury Bond Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

0.81%

5 Years

rr_AverageAnnualReturnYear05

0.34%

Since Inception

rr_AverageAnnualReturnSinceInception

0.29%

^[1]

IQ Real Return ETF | IQ Real Return ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

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0.48%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

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0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.23%

^[2]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.72%

^[2]

1 Year

rr_ExpenseExampleYear01

$ 74

3 Years

rr_ExpenseExampleYear03

230

5 Years

rr_ExpenseExampleYear05

401

10 Years

rr_ExpenseExampleYear10

$ 894

Annual Return 2010

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1.77%

Annual Return 2011

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2.10%

Annual Return 2012

rr_AnnualReturn2012

1.60%

Annual Return 2013

rr_AnnualReturn2013

(1.38%)

Annual Return 2014

rr_AnnualReturn2014

2.14%

Annual Return 2015

rr_AnnualReturn2015

0.02%

Annual Return 2016

rr_AnnualReturn2016

1.68%

Annual Return 2017

rr_AnnualReturn2017

3.07%

1 Year

rr_AverageAnnualReturnYear01

3.07%

5 Years

rr_AverageAnnualReturnYear05

1.09%

Since Inception

rr_AverageAnnualReturnSinceInception

1.35%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 27, 2009

IQ Real Return ETF | IQ Real Return ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.78%

^[3]

5 Years

rr_AverageAnnualReturnYear05

1.02%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

1.30%

^[1],[3]

IQ Real Return ETF | IQ Real Return ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.92%

^[3]

5 Years

rr_AverageAnnualReturnYear05

0.83%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

1.03%

^[1],[3]

[1] The Fund commenced operations on October 27, 2009.

[2] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Leaders GTAA Tracker ETF

IQ Leaders GTAA Tracker ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Leaders GTAA Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Leaders GTAA Tracker ETF IQ Leaders GTAA Tracker ETF
Management Fee	0.45%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.17%	[1]
Total Annual Fund Operating Expenses	0.63%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Leaders GTAA Tracker ETF | IQ Leaders GTAA Tracker ETF | USD ($)	64	202	351	786

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 145% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. The Fund does not invest in mutual funds, and the Underlying Index does not include mutual funds as Underlying Index Components. The Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns that are non-idiosyncratic, or unrelated to manager skill) of selected mutual funds pursuing a global allocation strategy (the “Strategy”). The Underlying Index seeks to track the performance of the 10 leading global allocation mutual funds based on fund performance and fund asset size, re-set annually in accordance with IndexIQ’s rules-based methodology (“Selected Global Allocation Funds”). Global allocation mutual funds typically invest in a combination of equity, fixed-income and money market securities of U.S. and foreign issuers, and may also invest in other asset classes such as commodities. A global allocation mutual fund’s allocation to equity, fixed-income and money market securities and to different countries will vary over time based on the manager’s view of macroeconomic, country-specific, and issuer-specific factors.

The Underlying Index may include both long and short positions in ETPs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that the returns of Selected Global Allocation Funds, when aggregated, display over time significant exposures to a set of common asset classes. By creating an index that has similar exposures to the same asset classes as Selected Global Allocation Funds generally, IndexIQ seeks to replicate the beta return characteristics of Selected Global Allocation Funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. mid-capitalization equity;

• U.S. small-capitalization equity;

• Foreign equity (Europe, Australasia & Far East);

• Emerging market equity;

• U.S. corporate investment grade debt;

• U.S. corporate high yield debt;

• U.S. mortgage-backed debt; and

• U.S. government short- and intermediate-term maturity obligations

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of Selected Global Allocation Funds.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of the Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Markets Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. MSCI ACWI (All Country World Index) is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -1.39%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	5.07%	1Q/2017
Lowest Return	–0.82%	4Q/2016

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Leaders GTAA Tracker ETF		1 Year	Since Inception	[1]	Inception Date
IQ Leaders GTAA Tracker ETF		16.22%	11.41%		Sep. 30, 2015
IQ Leaders GTAA Tracker ETF | Returns after taxes on distributions	[2]	15.26%	10.54%
IQ Leaders GTAA Tracker ETF | Returns after taxes on distributions and sale of Fund shares	[2]	9.35%	8.47%
IQ Leaders GTAA Index		16.74%	12.10%
MSCI All Country World Index		23.97%	17.28%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on September 30, 2015.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ Leaders GTAA Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Leaders GTAA Tracker ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Leaders GTAA Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 145% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

145.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. The Fund does not invest in mutual funds, and the Underlying Index does not include mutual funds as Underlying Index Components. The Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to track the “beta” portion of the returns (i.e., that portion of the returns that are non-idiosyncratic, or unrelated to manager skill) of selected mutual funds pursuing a global allocation strategy (the “Strategy”). The Underlying Index seeks to track the performance of the 10 leading global allocation mutual funds based on fund performance and fund asset size, re-set annually in accordance with IndexIQ’s rules-based methodology (“Selected Global Allocation Funds”). Global allocation mutual funds typically invest in a combination of equity, fixed-income and money market securities of U.S. and foreign issuers, and may also invest in other asset classes such as commodities. A global allocation mutual fund’s allocation to equity, fixed-income and money market securities and to different countries will vary over time based on the manager’s view of macroeconomic, country-specific, and issuer-specific factors.

The Underlying Index may include both long and short positions in ETPs. As opposed to taking long positions in which an investor seeks to profit from increases in the price of a security, short selling (or “selling short”) is a technique used by the Fund to try and profit from the falling price of a security. Short selling involves selling a security that has been borrowed from a third party with the intention of buying the identical security back at a later date to return to that third party. The basic principle of short selling is that one can profit by selling a security now at a high price and later buying it back at a lower price. The short seller hopes to profit from a decline in the price of the security between the sale and the repurchase, as the seller will pay less to buy the security than it received on selling the security.

The Underlying Index generally is based on the premise that the returns of Selected Global Allocation Funds, when aggregated, display over time significant exposures to a set of common asset classes. By creating an index that has similar exposures to the same asset classes as Selected Global Allocation Funds generally, IndexIQ seeks to replicate the beta return characteristics of Selected Global Allocation Funds.

The Underlying Index Components of this Strategy generally provide exposures to:

• U.S. large-capitalization equity;

• U.S. mid-capitalization equity;

• U.S. small-capitalization equity;

• Foreign equity (Europe, Australasia & Far East);

• Emerging market equity;

• U.S. corporate investment grade debt;

• U.S. corporate high yield debt;

• U.S. mortgage-backed debt; and

• U.S. government short- and intermediate-term maturity obligations

The Underlying Index is unlike traditional market-oriented indexes like the Standard & Poor’s 500^® Composite Stock Total Return Index (the “S&P 500 Index”). Instead of tracking the performance of publicly-traded issuers representing a market or industry sector, the Underlying Index seeks to track the returns of Selected Global Allocation Funds.

Strategy Portfolio Concentration [Text]

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The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ’s rules-based methodology of such Underlying Index. The Fund does not invest in mutual funds, and the Underlying Index does not include mutual funds as Underlying Index Components. The Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles issuing equity securities organized in the U.S., such as exchange-traded commodity pools (“ETVs”), and may include exchange-traded notes (“ETNs”) (such ETFs, ETVs and ETNs are referred to collectively as “exchange-traded products” or “ETPs”). The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of the Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Long/Short Risk

There is no guarantee that the returns on the Fund’s long or short, if any, positions will produce positive returns, and the Fund could lose money if either or both positions produce negative returns. In addition, the Fund may gain enhanced long exposure to certain securities (i.e., obtain investment exposure that exceeds the amount directly invested in those assets, a form of leverage) and, as a result, suffer losses that exceed the amount invested in those assets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited downside potential.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit/Default Risk. Credit and default risk exists where an issuer or guarantor of fixed-income securities held by an ETP may default on its obligation to pay interest and repay principal. Lower rated securities typically present greater risk of default with high yield or “junk” bonds presenting the greatest risk.

• Currency Risk. Investments directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies are subject to the risk that those currencies will decline in value relative to the U.S. dollar. Currency rates in foreign countries may fluctuate significantly over short periods of time.

• Emerging Markets Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• Equity Securities Risk. The prices of equity securities change in response to many factors including the historical and prospective earnings of the issuer, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

• Fixed-Income Securities Risk. All fixed-income securities are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer of a security will be unable to make interest payments and/or repay the principal on its debt. Interest rate risk refers to fluctuations in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The prices of fixed-income securities tend to fall as interest rates rise. Securities that have longer maturities tend to fluctuate more in price in response to changes in market interest rates.

• Foreign Securities Risk. When an ETP invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions. An ETP will also be subject to the risk of negative foreign currency rate fluctuations. Foreign risks will normally be greater when an ETP invests in emerging markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed-income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Risk Lose Money [Text]

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As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. MSCI ACWI (All Country World Index) is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

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1-888-474-7725

Performance Availability Website Address [Text]

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nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -1.39%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	5.07%	1Q/2017
Lowest Return	–0.82%	4Q/2016

Year to Date Return, Label

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The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

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Jun. 30, 2018

Bar Chart, Year to Date Return

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(1.39%)

Highest Quarterly Return, Label

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Highest Return

Highest Quarterly Return, Date

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Mar. 31, 2017

Highest Quarterly Return

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5.07%

Lowest Quarterly Return, Label

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Lowest Return

Lowest Quarterly Return, Date

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Dec. 31, 2016

Lowest Quarterly Return

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(0.82%)

Performance Table Heading

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Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

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After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

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Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Leaders GTAA Tracker ETF | IQ Leaders GTAA Index

Risk/Return:

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Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

16.74%

Since Inception

rr_AverageAnnualReturnSinceInception

12.10%

^[1]

IQ Leaders GTAA Tracker ETF | MSCI All Country World Index

Risk/Return:

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Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

23.97%

Since Inception

rr_AverageAnnualReturnSinceInception

17.28%

^[1]

IQ Leaders GTAA Tracker ETF | IQ Leaders GTAA Tracker ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

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0.45%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

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0.01%

Acquired Fund Fees & Expenses

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0.17%

^[2]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.63%

^[2]

1 Year

rr_ExpenseExampleYear01

$ 64

3 Years

rr_ExpenseExampleYear03

202

5 Years

rr_ExpenseExampleYear05

351

10 Years

rr_ExpenseExampleYear10

$ 786

Annual Return 2016

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5.92%

Annual Return 2017

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16.22%

1 Year

rr_AverageAnnualReturnYear01

16.22%

Since Inception

rr_AverageAnnualReturnSinceInception

11.41%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2015

IQ Leaders GTAA Tracker ETF | IQ Leaders GTAA Tracker ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.26%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

10.54%

^[1],[3]

IQ Leaders GTAA Tracker ETF | IQ Leaders GTAA Tracker ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.35%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

8.47%

^[1],[3]

[1] The Fund commenced operations on September 30, 2015.

[2] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Enhanced Core Bond U.S. ETF

IQ Enhanced Core Bond U.S. ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Enhanced Core Bond U.S. Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Enhanced Core Bond U.S. ETF IQ Enhanced Core Bond U.S. ETF
Management Fee	0.25%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.09%	[1]
Total Annual Fund Operating Expenses	0.35%
Expense Waiver/Reimbursement	0.05%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.30%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Enhanced Core Bond U.S. ETF | IQ Enhanced Core Bond U.S. ETF | USD ($)	31	107	191	438

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 264% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index. The Underlying Index seeks to outperform the U.S. dollar-denominated taxable fixed income universe by using a combination of short- and long-term momentum to overweight and underweight various sectors of the investment grade U.S. fixed income securities market (the “Investment Grade Market”).

The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ LLC’s (“IndexIQ”) rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles organized in the U.S. (“ETVs”) (such ETFs and ETVs are referred to collectively as “exchange-traded products” or “ETPs”). As of June 30, 2018, the Underlying Index consists of 16 Underlying Index Components. The Fund may invest more than 25% of its assets in an Underlying Index Component. The Fund may also invest in other securities and instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”) and bonds. The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, directly or indirectly through ETPs, in bonds, which include all types of debt securities, of U.S. issuers.

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ with New York Life Investment Management LLC (“NYLIM”) acting as index consultant to IndexIQ. The Underlying Index follows a rules-based methodology to construct an index consisting of investments in various sectors of the Investment Grade Market. The sectors of the Investment Grade Market in which the Underlying Index principally invests are:

• Short-term U.S. Treasuries (1-3 year maturities);

• Intermediate-term U.S. Treasuries (3-10 year maturities);

• Long-term U.S. Treasuries (greater than 10 year maturities);

• Investment grade corporate bonds; and

• Investment grade mortgage-backed securities.

The Underlying Index weights each of the various sectors of the Investment Grade Market based on the total return momentum of each fixed income sector. Momentum is measured by comparing the average total return index of the fixed income market sector over a short-term period with the sector’s average total return index over a longer-term period, while taking into account the volatility of the sector. Volatility is the standard deviation of returns and measures the amount of fluctuation in a security’s or group of securities’ value over time. The Underlying Index overweighs fixed income sectors with high momentum and underweights fixed income sectors with low momentum. The exposure of the Underlying Index to different sectors of the Investment Grade Market will vary over time. The maximum exposure of the Underlying Index to any single sector of the Investment Grade Market is 50% of the Underlying Index. Over long-term periods, the Underlying Index is expected to have similar volatility to the investment grade U.S. fixed income securities market. However, the Underlying Index’s and Fund’s volatility during certain periods may materially exceed the volatility of the investment grade U.S. fixed income securities market. The Underlying Index rebalances monthly.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of the Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit Risk. An issuer or guarantor of a bond might be unable or unwilling to meet its financial obligations and might not make interest or principal payments on a bond when those payments are due (“default”). Defaults may potentially reduce the Fund’s income or ability to recover amounts due and may reduce the value of the bond, sometimes dramatically.

• Interest Rate Risk. The value of bonds may fall when interest rates rise. Bonds with longer durations tend to be more sensitive to changes in interest rates, making them more volatile than bonds with shorter durations or floating or adjustable interest rates. Many factors can cause interest rates to rise, such as central bank monetary policies, inflation rates, general economic conditions and expectations about the foregoing. Given the historically low interest rate environment in the U.S., risks associated with rising interest rates are heightened. The negative impact on bonds from potential interest rate increases could be swift and significant, including falling market values, increased redemptions and reduced liquidity. Substantial redemptions from bond funds may worsen that impact. Additionally, regulations applicable to and changing business practices of broker-dealers that make markets in debt instruments may result in those broker-dealers restricting their market making activities for certain bonds, which may reduce the liquidity and increase the volatility of such bonds.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Mortgage-backed securities are subject to prepayment risk. If interest rates fall, the underlying debt may be repaid ahead of schedule, reducing the value of the Fund’s investments. If interest rates rise, there may be fewer prepayments, which would cause the average bond maturity to rise, increasing the potential for the Fund to lose money. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The Bloomberg Barclays U.S. Aggregate Bond Index is a broad-based benchmark that measures the investment-grade, U.S. dollar-denominated, fixed-rate taxable bond market, including Treasurys, government-related and corporate securities, mortgage-backed securities (agency fixed-rate and hybrid adjustable rate mortgage pass-throughs), asset-backed securities, and commercial mortgage-backed securities.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -3.50%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	1.25%	Q2/2017
Lowest Return	–0.07%	Q1/2017

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Enhanced Core Bond U.S. ETF		1 Year	Since Inception	[1]	Inception Date
IQ Enhanced Core Bond U.S. ETF		2.52%	0.98%		May 10, 2016
IQ Enhanced Core Bond U.S. ETF | Returns after taxes on distributions	[2]	1.54%	0.01%
IQ Enhanced Core Bond U.S. ETF | Returns after taxes on distributions and sale of Fund shares	[2]	1.42%	0.31%
IQ Enhanced Core Bond U.S. Index		2.87%	1.29%
Bloomberg Barclays U.S. Aggregate Bond Index		3.54%	1.51%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[2] IndexIQ Advisors LLC (the "Advisor") has contractually agreed, until August 31, 2019, to waive a portion of its management fee equal to 0.05% of average daily net assets.

[1] The Fund commenced operations on May 10, 2016.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ Enhanced Core Bond U.S. ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Enhanced Core Bond U.S. ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Enhanced Core Bond U.S. Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 264% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

264.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index. The Underlying Index seeks to outperform the U.S. dollar-denominated taxable fixed income universe by using a combination of short- and long-term momentum to overweight and underweight various sectors of the investment grade U.S. fixed income securities market (the “Investment Grade Market”).

The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ LLC’s (“IndexIQ”) rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles organized in the U.S. (“ETVs”) (such ETFs and ETVs are referred to collectively as “exchange-traded products” or “ETPs”). As of June 30, 2018, the Underlying Index consists of 16 Underlying Index Components. The Fund may invest more than 25% of its assets in an Underlying Index Component. The Fund may also invest in other securities and instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”) and bonds. The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, directly or indirectly through ETPs, in bonds, which include all types of debt securities, of U.S. issuers.

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ with New York Life Investment Management LLC (“NYLIM”) acting as index consultant to IndexIQ. The Underlying Index follows a rules-based methodology to construct an index consisting of investments in various sectors of the Investment Grade Market. The sectors of the Investment Grade Market in which the Underlying Index principally invests are:

• Short-term U.S. Treasuries (1-3 year maturities);

• Intermediate-term U.S. Treasuries (3-10 year maturities);

• Long-term U.S. Treasuries (greater than 10 year maturities);

• Investment grade corporate bonds; and

• Investment grade mortgage-backed securities.

The Underlying Index weights each of the various sectors of the Investment Grade Market based on the total return momentum of each fixed income sector. Momentum is measured by comparing the average total return index of the fixed income market sector over a short-term period with the sector’s average total return index over a longer-term period, while taking into account the volatility of the sector. Volatility is the standard deviation of returns and measures the amount of fluctuation in a security’s or group of securities’ value over time. The Underlying Index overweighs fixed income sectors with high momentum and underweights fixed income sectors with low momentum. The exposure of the Underlying Index to different sectors of the Investment Grade Market will vary over time. The maximum exposure of the Underlying Index to any single sector of the Investment Grade Market is 50% of the Underlying Index. Over long-term periods, the Underlying Index is expected to have similar volatility to the investment grade U.S. fixed income securities market. However, the Underlying Index’s and Fund’s volatility during certain periods may materially exceed the volatility of the investment grade U.S. fixed income securities market. The Underlying Index rebalances monthly.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index. The Underlying Index seeks to outperform the U.S. dollar-denominated taxable fixed income universe by using a combination of short- and long-term momentum to overweight and underweight various sectors of the investment grade U.S. fixed income securities market (the “Investment Grade Market”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of the Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit Risk. An issuer or guarantor of a bond might be unable or unwilling to meet its financial obligations and might not make interest or principal payments on a bond when those payments are due (“default”). Defaults may potentially reduce the Fund’s income or ability to recover amounts due and may reduce the value of the bond, sometimes dramatically.

• Interest Rate Risk. The value of bonds may fall when interest rates rise. Bonds with longer durations tend to be more sensitive to changes in interest rates, making them more volatile than bonds with shorter durations or floating or adjustable interest rates. Many factors can cause interest rates to rise, such as central bank monetary policies, inflation rates, general economic conditions and expectations about the foregoing. Given the historically low interest rate environment in the U.S., risks associated with rising interest rates are heightened. The negative impact on bonds from potential interest rate increases could be swift and significant, including falling market values, increased redemptions and reduced liquidity. Substantial redemptions from bond funds may worsen that impact. Additionally, regulations applicable to and changing business practices of broker-dealers that make markets in debt instruments may result in those broker-dealers restricting their market making activities for certain bonds, which may reduce the liquidity and increase the volatility of such bonds.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Mortgage-backed securities are subject to prepayment risk. If interest rates fall, the underlying debt may be repaid ahead of schedule, reducing the value of the Fund’s investments. If interest rates rise, there may be fewer prepayments, which would cause the average bond maturity to rise, increasing the potential for the Fund to lose money. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The Bloomberg Barclays U.S. Aggregate Bond Index is a broad-based benchmark that measures the investment-grade, U.S. dollar-denominated, fixed-rate taxable bond market, including Treasurys, government-related and corporate securities, mortgage-backed securities (agency fixed-rate and hybrid adjustable rate mortgage pass-throughs), asset-backed securities, and commercial mortgage-backed securities.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was -3.50%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	1.25%	Q2/2017
Lowest Return	–0.07%	Q1/2017

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(3.50%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2017

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

1.25%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2017

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(0.07%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Enhanced Core Bond U.S. ETF | IQ Enhanced Core Bond U.S. Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

2.87%

Since Inception

rr_AverageAnnualReturnSinceInception

1.29%

^[1]

IQ Enhanced Core Bond U.S. ETF | Bloomberg Barclays U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

3.54%

Since Inception

rr_AverageAnnualReturnSinceInception

1.51%

^[1]

IQ Enhanced Core Bond U.S. ETF | IQ Enhanced Core Bond U.S. ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.25%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.09%

^[2]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.35%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.05%

^[3]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.30%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 31

3 Years

rr_ExpenseExampleYear03

107

5 Years

rr_ExpenseExampleYear05

191

10 Years

rr_ExpenseExampleYear10

$ 438

Annual Return 2017

rr_AnnualReturn2017

2.52%

1 Year

rr_AverageAnnualReturnYear01

2.52%

Since Inception

rr_AverageAnnualReturnSinceInception

0.98%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 10, 2016

IQ Enhanced Core Bond U.S. ETF | IQ Enhanced Core Bond U.S. ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.54%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

0.01%

^[1],[4]

IQ Enhanced Core Bond U.S. ETF | IQ Enhanced Core Bond U.S. ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.42%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

0.31%

^[1],[4]

[1] The Fund commenced operations on May 10, 2016.

[2] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[3] IndexIQ Advisors LLC (the "Advisor") has contractually agreed, until August 31, 2019, to waive a portion of its management fee equal to 0.05% of average daily net assets.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ Enhanced Core Plus Bond U.S. ETF

IQ Enhanced Core Plus Bond U.S. ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Enhanced Core Plus Bond U.S. Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Enhanced Core Plus Bond U.S. ETF IQ Enhanced Core Plus Bond U.S. ETF
Management Fee	0.25%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.17%	[1]
Total Annual Fund Operating Expenses	0.43%
Expense Waiver/Reimbursement	0.05%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.38%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Enhanced Core Plus Bond U.S. ETF | IQ Enhanced Core Plus Bond U.S. ETF | USD ($)	39	133	236	537

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 269% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index seeks to outperform the U.S. dollar-denominated taxable fixed income universe by using a combination of short- and long-term momentum to overweight and underweight various sectors of the investment grade and high yield (or “junk”) fixed income securities market (the “Investment Grade and High Yield Market”).

The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ LLC’s (“IndexIQ”) rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles organized in the U.S. (“ETVs”) (such ETFs and ETVs are referred to collectively as “exchange-traded products” or “ETPs”). As of June 30, 2018, the Underlying Index consists of 20 Underlying Index Components. The Fund may invest more than 25% of its assets in an Underlying Index Component. The Fund may also invest in other securities and instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”) and bonds. The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, directly or indirectly through ETPs in bonds, which include all types of debt securities, of U.S. issuers.

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC IndexIQ with New York Life Investment Management LLC (“NYLIM”) acting as index consultant to IndexIQ. The Underlying Index follows a rules-based methodology to construct an index consisting of investments in various sectors of the Investment Grade and High Yield Market. The sectors of the fixed income securities market in which the Underlying Index principally invests are:

• Short-term U.S. Treasuries (1-3 year maturities);

• Intermediate-term U.S. Treasuries (3-10 year maturities);

• Long-term U.S. Treasuries (greater than 10 year maturities);

• U.S. investment grade corporate bonds;

• U.S. investment grade mortgage-backed securities;

• U.S. high yield (or “junk”) debt; and

• U.S.-dollar denominated debt of emerging market issuers.

The Underlying Index weights each of the various sectors of the Investment Grade and High Yield Market based on the total return momentum of each fixed income sector. Momentum is measured by comparing the average total return index of the fixed income market sector over a short-term period with the sector’s average total return index over a longer-term period, while taking into account the volatility of the sector. Volatility is the standard deviation of returns and measures the amount of fluctuation in a security’s or group of securities’ value over time. The Underlying Index overweighs fixed income sectors with high momentum and underweights fixed income sectors with low momentum. The exposure of the Underlying Index to different sectors of the Investment Grade and High Yield Market will vary over time. The maximum exposure of the Underlying Index to any single U.S. Treasury or investment grade sector is 50% of the Underlying Index. Up to 25% of the Underlying Index may consist of ETPs that invest principally in securities rated below investment grade (high yield debt). Up to 5% of the Underlying Index may consist of ETPs that invest principally in U.S.-dollar denominated debt of emerging market issuers. Over long-term periods, the Underlying Index is expected to have similar volatility to the investment grade fixed income securities market. However, the Underlying Index’s and Fund’s volatility during certain periods may materially exceed the volatility of the investment grade U.S. fixed income securities market. The Underlying Index rebalances monthly. The composition of the Underlying Index may change over time.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of the Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit Risk. An issuer or guarantor of a bond might be unable or unwilling to meet its financial obligations and might not make interest or principal payments on a bond when those payments are due (“default”). Defaults may potentially reduce the Fund’s income or ability to recover amounts due and may reduce the value of the bond, sometimes dramatically.

• Emerging Markets Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Interest Rate Risk. The value of bonds may fall when interest rates rise. Bonds with longer durations tend to be more sensitive to changes in interest rates, making them more volatile than bonds with shorter durations or floating or adjustable interest rates. Many factors can cause interest rates to rise, such as central bank monetary policies, inflation rates, general economic conditions and expectations about the foregoing. Given the historically low interest rate environment in the U.S., risks associated with rising interest rates are heightened. The negative impact on bonds from potential interest rate increases could be swift and significant, including falling market values, increased redemptions and reduced liquidity. Substantial redemptions from bond funds may worsen that impact. Additionally, regulations applicable to and changing business practices of broker-dealers that make markets in debt instruments may result in those broker-dealers restricting their market making activities for certain bonds, which may reduce the liquidity and increase the volatility of such bonds.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance The Bloomberg Barclays U.S. Aggregate Bond Index is a broad-based benchmark that measures the investment-grade, U.S. dollar-denominated, fixed-rate taxable bond market, including Treasurys, government-related and corporate securities, mortgage-backed securities (agency fixed-rate and hybrid adjustable rate mortgage pass-throughs), asset-backed securities, and commercial mortgage-backed securities. All returns assume reinvestment of dividends and distributions.

As of the date of this Prospectus, the Fund has not completed a full calendar year and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -2.82%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	1.66%	Q2/2017
Lowest Return	0.19%	Q4/2017

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Enhanced Core Plus Bond U.S. ETF		1 Year	Since Inception	[1]	Inception Date
IQ Enhanced Core Plus Bond U.S. ETF		4.24%	2.87%		May 10, 2016
IQ Enhanced Core Plus Bond U.S. ETF | Returns after taxes on distributions	[2]	2.89%	1.56%
IQ Enhanced Core Plus Bond U.S. ETF | Returns after taxes on distributions and sale of Fund shares	[2]	2.39%	1.59%
IQ Enhanced Core Plus Bond U.S. Index		4.51%	3.12%
Bloomberg Barclays U.S. Aggregate Bond Index		3.54%	1.51%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[2] IndexIQ Advisors LLC (the "Advisor") has contractually agreed, until August 31, 2019, to waive a portion of its management fee equal to 0.05% of average daily net assets.

[1] The Fund commenced operations on May 10, 2016.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Enhanced Core Plus Bond U.S. ETF

Risk/Return:

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Risk/Return [Heading]

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IQ Enhanced Core Plus Bond U.S. ETF

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Enhanced Core Plus Bond U.S. Index (the “Underlying Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 269% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

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269.00%

Expense Exchange Traded Fund Commissions [Text]

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Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

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The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

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Example.

Expense Example Narrative [Text Block]

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This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index seeks to outperform the U.S. dollar-denominated taxable fixed income universe by using a combination of short- and long-term momentum to overweight and underweight various sectors of the investment grade and high yield (or “junk”) fixed income securities market (the “Investment Grade and High Yield Market”).

The Underlying Index consists of a number of components (“Underlying Index Components”) selected in accordance with IndexIQ LLC’s (“IndexIQ”) rules-based methodology of such Underlying Index. Such Underlying Index Components will include primarily ETFs and/or other exchange-traded vehicles organized in the U.S. (“ETVs”) (such ETFs and ETVs are referred to collectively as “exchange-traded products” or “ETPs”). As of June 30, 2018, the Underlying Index consists of 20 Underlying Index Components. The Fund may invest more than 25% of its assets in an Underlying Index Component. The Fund may also invest in other securities and instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”) and bonds. The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, directly or indirectly through ETPs in bonds, which include all types of debt securities, of U.S. issuers.

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC IndexIQ with New York Life Investment Management LLC (“NYLIM”) acting as index consultant to IndexIQ. The Underlying Index follows a rules-based methodology to construct an index consisting of investments in various sectors of the Investment Grade and High Yield Market. The sectors of the fixed income securities market in which the Underlying Index principally invests are:

• Short-term U.S. Treasuries (1-3 year maturities);

• Intermediate-term U.S. Treasuries (3-10 year maturities);

• Long-term U.S. Treasuries (greater than 10 year maturities);

• U.S. investment grade corporate bonds;

• U.S. investment grade mortgage-backed securities;

• U.S. high yield (or “junk”) debt; and

• U.S.-dollar denominated debt of emerging market issuers.

The Underlying Index weights each of the various sectors of the Investment Grade and High Yield Market based on the total return momentum of each fixed income sector. Momentum is measured by comparing the average total return index of the fixed income market sector over a short-term period with the sector’s average total return index over a longer-term period, while taking into account the volatility of the sector. Volatility is the standard deviation of returns and measures the amount of fluctuation in a security’s or group of securities’ value over time. The Underlying Index overweighs fixed income sectors with high momentum and underweights fixed income sectors with low momentum. The exposure of the Underlying Index to different sectors of the Investment Grade and High Yield Market will vary over time. The maximum exposure of the Underlying Index to any single U.S. Treasury or investment grade sector is 50% of the Underlying Index. Up to 25% of the Underlying Index may consist of ETPs that invest principally in securities rated below investment grade (high yield debt). Up to 5% of the Underlying Index may consist of ETPs that invest principally in U.S.-dollar denominated debt of emerging market issuers. Over long-term periods, the Underlying Index is expected to have similar volatility to the investment grade fixed income securities market. However, the Underlying Index’s and Fund’s volatility during certain periods may materially exceed the volatility of the investment grade U.S. fixed income securities market. The Underlying Index rebalances monthly. The composition of the Underlying Index may change over time.

Strategy Portfolio Concentration [Text]

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The Fund is a “fund of funds” which means it invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index, which includes underlying funds. The Underlying Index seeks to outperform the U.S. dollar-denominated taxable fixed income universe by using a combination of short- and long-term momentum to overweight and underweight various sectors of the investment grade and high yield (or “junk”) fixed income securities market (the “Investment Grade and High Yield Market”).

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Exchange Traded Product Risk

The value of the Fund’s investment in ETPs is based on stock market prices and the Fund could lose money due to stock market developments, the failure of an active trading market to develop or exchange trading halts or de-listings.

Fund of Funds Risk

The Fund’s investment performance, because it is a fund of funds, depends on the investment performance of the ETPs in which it invests.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Underlying Funds Risk

An investment in the Fund is subject to the risks associated with the underlying ETPs that comprise the Fund’s Underlying Index. These risks include:

• Credit Risk. An issuer or guarantor of a bond might be unable or unwilling to meet its financial obligations and might not make interest or principal payments on a bond when those payments are due (“default”). Defaults may potentially reduce the Fund’s income or ability to recover amounts due and may reduce the value of the bond, sometimes dramatically.

• Emerging Markets Securities Risk. Securities of issuers based in countries with developing economies (emerging markets) may present market, credit, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign countries. Emerging markets are subject to greater market volatility, lower trading volume, political and economic instability, uncertainty regarding the existence of trading markets and more governmental limitations on foreign investment than more developed markets.

• High Yield Securities Risk. High yield securities generally offer a higher current yield than that available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.” The ability of issuers of high yield securities to make timely payments of interest and principal may be adversely impacted by adverse changes in general economic conditions, changes in the financial condition of their issuers and price fluctuations in response to changes in interest rates. The market value and liquidity of high yield securities may be negatively impacted by adverse publicity and investor perceptions, whether or not based on fundamental analysis, especially in a market characterized by a low volume of trading.

• Interest Rate Risk. The value of bonds may fall when interest rates rise. Bonds with longer durations tend to be more sensitive to changes in interest rates, making them more volatile than bonds with shorter durations or floating or adjustable interest rates. Many factors can cause interest rates to rise, such as central bank monetary policies, inflation rates, general economic conditions and expectations about the foregoing. Given the historically low interest rate environment in the U.S., risks associated with rising interest rates are heightened. The negative impact on bonds from potential interest rate increases could be swift and significant, including falling market values, increased redemptions and reduced liquidity. Substantial redemptions from bond funds may worsen that impact. Additionally, regulations applicable to and changing business practices of broker-dealers that make markets in debt instruments may result in those broker-dealers restricting their market making activities for certain bonds, which may reduce the liquidity and increase the volatility of such bonds.

• Mortgage-Backed Securities Risk. Mortgage-backed securities have different risk characteristics than traditional debt securities. Although generally the value of fixed income securities increases during periods of falling interest rates and decreases during periods of rising rates, this is not always the case with mortgage-backed securities. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities.

Risk Lose Money [Text]

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As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance The Bloomberg Barclays U.S. Aggregate Bond Index is a broad-based benchmark that measures the investment-grade, U.S. dollar-denominated, fixed-rate taxable bond market, including Treasurys, government-related and corporate securities, mortgage-backed securities (agency fixed-rate and hybrid adjustable rate mortgage pass-throughs), asset-backed securities, and commercial mortgage-backed securities. All returns assume reinvestment of dividends and distributions.

As of the date of this Prospectus, the Fund has not completed a full calendar year and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

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The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance

Performance One Year or Less [Text]

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As of the date of this Prospectus, the Fund has not completed a full calendar year and therefore does not report its performance information.

Performance Availability Phone [Text]

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1-888-474-7725

Performance Availability Website Address [Text]

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nylinvestments.com/etfs

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -2.82%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	1.66%	Q2/2017
Lowest Return	0.19%	Q4/2017

Year to Date Return, Label

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The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(2.82%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2017

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

1.66%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2017

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

0.19%

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Enhanced Core Plus Bond U.S. ETF | IQ Enhanced Core Plus Bond U.S. Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

4.51%

Since Inception

rr_AverageAnnualReturnSinceInception

3.12%

^[1]

IQ Enhanced Core Plus Bond U.S. ETF | Bloomberg Barclays U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

3.54%

Since Inception

rr_AverageAnnualReturnSinceInception

1.51%

^[1]

IQ Enhanced Core Plus Bond U.S. ETF | IQ Enhanced Core Plus Bond U.S. ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.25%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.17%

^[2]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.43%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.05%

^[3]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.38%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 39

3 Years

rr_ExpenseExampleYear03

133

5 Years

rr_ExpenseExampleYear05

236

10 Years

rr_ExpenseExampleYear10

$ 537

Annual Return 2017

rr_AnnualReturn2017

4.24%

1 Year

rr_AverageAnnualReturnYear01

4.24%

Since Inception

rr_AverageAnnualReturnSinceInception

2.87%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 10, 2016

IQ Enhanced Core Plus Bond U.S. ETF | IQ Enhanced Core Plus Bond U.S. ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.89%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

1.56%

^[1],[4]

IQ Enhanced Core Plus Bond U.S. ETF | IQ Enhanced Core Plus Bond U.S. ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.39%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

1.59%

^[1],[4]

[1] The Fund commenced operations on May 10, 2016.

[2] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[3] IndexIQ Advisors LLC (the "Advisor") has contractually agreed, until August 31, 2019, to waive a portion of its management fee equal to 0.05% of average daily net assets.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ Merger Arbitrage ETF

IQ Merger Arbitrage ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Merger Arbitrage Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Merger Arbitrage ETF IQ Merger Arbitrage ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.02%	[1]
Total Annual Fund Operating Expenses	0.78%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Merger Arbitrage ETF | IQ Merger Arbitrage ETF | USD ($)	80	249	433	966

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 329% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to employ a systematic investment process designed to identify opportunities in companies whose equity securities trade in developed markets, including the U.S., and which are involved in announced mergers, acquisitions and other buyout-related transactions. The Underlying Index seeks to capitalize on the spread between the current market price of the target company’s stock and the price received by the holder of that stock upon consummation of the buyout-related transaction. In addition, the Underlying Index includes short exposure to the U.S. and non-U.S. equity markets.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index consists of a number of Underlying Index Components selected in accordance with IndexIQ’s rules-based methodology. Such Underlying Index Components will include primarily U.S. and non-U.S. equity securities. In addition, the Fund may invest up to 20% of its net assets in investments not included in its Underlying Index, but which the Advisor believes will help the Fund track its Underlying Index. The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Pursuant to the Underlying Index’s rules, to the extent there are an insufficient number of target companies in which to invest, insufficient liquidity exists in such companies, or target companies are removed from the Underlying Index between monthly reconstitutions, the Underlying Index will allocate the available cash to one or more short-term fixed income ETFs. In seeking to track the Underlying Index, the Funds may invest, with approximately the same allocation proportions as the Underlying Index, in short-term fixed income ETFs, money market instruments, high quality short-term debt securities, or derivative securities thereon. To the extent the Fund invests in cash and cash equivalents, the Fund will not be pursuing a merger arbitrage strategy.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund.

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

When the Fund invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions.

Foreign Securities Valuation Risk

Because foreign exchanges may be open on days when the Fund does not price its shares, the value of the securities in the Fund’s portfolio may change on days when shareholders of the Fund will not be able to purchase or sell the Fund’s shares.

High Portfolio Turnover Risk

The Fund’s investment strategy is likely to result in high portfolio turnover, which, in turn, may result in increased transaction costs to the Fund and lower total returns.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Investment in Foreign Merger Transactions Risk

Investments in foreign companies involved in pending mergers, takeovers and other corporate reorganizations may entail political, cultural, regulatory, legal and tax risks different from those associated with comparable transactions in the U.S.

Issuer Risk

From time to time the Fund may have exposure to a limited number of issuers. During such times, the Fund is more susceptible to the risk that an issuer’s securities may fluctuate in value.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Merger Arbitrage Risk

The principal risk associated with the Fund’s investments is that certain of the proposed takeover transactions in which the Fund invests may be renegotiated, terminated or involve a longer time frame than originally contemplated for business reasons or due to regulatory oversight or for other reasons, in each case which may negatively impact the Fund’s returns.

Mid- and Small-Capitalization Companies Risk

Stocks of mid and small capitalization companies generally are more volatile, more vulnerable to adverse business and economic developments, and more thinly traded relative to those of larger companies.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions, including short exposure to securities indexes, introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short, have unlimited downside potential.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI ED: Merger Arbitrage Index is an equally weighted index of hedge funds primarily focused on opportunities in equity and equity related instruments of companies which are currently engaged in a corporate transaction. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses). The S&P 500® Index is a broad-based unmanaged index of 500 stocks, which is designed to represent the equity market in general (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -1.17%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	3.80%	Q1/2012
Lowest Return	–3.90%	Q3/2011

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Merger Arbitrage ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Merger Arbitrage ETF		5.86%	4.97%	3.15%		Nov. 17, 2009
IQ Merger Arbitrage ETF | Returns after taxes on distributions	[2]	5.86%	4.84%	3.01%
IQ Merger Arbitrage ETF | Returns after taxes on distributions and sale of Fund shares	[2]	3.32%	3.84%	2.42%
IQ Merger Arbitrage Index	[3]	6.70%	5.89%	4.18%
HFRI ED: Merger Arbitrage Index		4.31%	3.53%	3.39%
MSCI World Index		22.40%	11.64%	9.63%
S&P 500 Index		21.10%	15.07%	13.08%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on November 17, 2009.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[3] HFRI ED: Merger Arbitrage Index is calculated from December 1, 2009. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

XML

Label

Element

Value

IQ Merger Arbitrage ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Merger Arbitrage ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Merger Arbitrage Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 329% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

329.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to employ a systematic investment process designed to identify opportunities in companies whose equity securities trade in developed markets, including the U.S., and which are involved in announced mergers, acquisitions and other buyout-related transactions. The Underlying Index seeks to capitalize on the spread between the current market price of the target company’s stock and the price received by the holder of that stock upon consummation of the buyout-related transaction. In addition, the Underlying Index includes short exposure to the U.S. and non-U.S. equity markets.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index consists of a number of Underlying Index Components selected in accordance with IndexIQ’s rules-based methodology. Such Underlying Index Components will include primarily U.S. and non-U.S. equity securities. In addition, the Fund may invest up to 20% of its net assets in investments not included in its Underlying Index, but which the Advisor believes will help the Fund track its Underlying Index. The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Pursuant to the Underlying Index’s rules, to the extent there are an insufficient number of target companies in which to invest, insufficient liquidity exists in such companies, or target companies are removed from the Underlying Index between monthly reconstitutions, the Underlying Index will allocate the available cash to one or more short-term fixed income ETFs. In seeking to track the Underlying Index, the Funds may invest, with approximately the same allocation proportions as the Underlying Index, in short-term fixed income ETFs, money market instruments, high quality short-term debt securities, or derivative securities thereon. To the extent the Fund invests in cash and cash equivalents, the Fund will not be pursuing a merger arbitrage strategy.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index consists of a number of Underlying Index Components selected in accordance with IndexIQ’s rules-based methodology. Such Underlying Index Components will include primarily U.S. and non-U.S. equity securities. In addition, the Fund may invest up to 20% of its net assets in investments not included in its Underlying Index, but which the Advisor believes will help the Fund track its Underlying Index. The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund.

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

When the Fund invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions.

Foreign Securities Valuation Risk

Because foreign exchanges may be open on days when the Fund does not price its shares, the value of the securities in the Fund’s portfolio may change on days when shareholders of the Fund will not be able to purchase or sell the Fund’s shares.

High Portfolio Turnover Risk

The Fund’s investment strategy is likely to result in high portfolio turnover, which, in turn, may result in increased transaction costs to the Fund and lower total returns.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Investment in Foreign Merger Transactions Risk

Investments in foreign companies involved in pending mergers, takeovers and other corporate reorganizations may entail political, cultural, regulatory, legal and tax risks different from those associated with comparable transactions in the U.S.

Issuer Risk

From time to time the Fund may have exposure to a limited number of issuers. During such times, the Fund is more susceptible to the risk that an issuer’s securities may fluctuate in value.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Merger Arbitrage Risk

The principal risk associated with the Fund’s investments is that certain of the proposed takeover transactions in which the Fund invests may be renegotiated, terminated or involve a longer time frame than originally contemplated for business reasons or due to regulatory oversight or for other reasons, in each case which may negatively impact the Fund’s returns.

Mid- and Small-Capitalization Companies Risk

Stocks of mid and small capitalization companies generally are more volatile, more vulnerable to adverse business and economic developments, and more thinly traded relative to those of larger companies.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions, including short exposure to securities indexes, introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short, have unlimited downside potential.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The HFRI ED: Merger Arbitrage Index is an equally weighted index of hedge funds primarily focused on opportunities in equity and equity related instruments of companies which are currently engaged in a corporate transaction. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses). The S&P 500® Index is a broad-based unmanaged index of 500 stocks, which is designed to represent the equity market in general (performance data assumes reinvestment of dividends, but it does not reflect management fees, transaction costs or other expenses).

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

HFRI ED: Merger Arbitrage Index is calculated from December 1, 2009. Because index comparisons are generally calculated as of the end of each month, index performance information under the “Since Inception” heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was -1.17%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	3.80%	Q1/2012
Lowest Return	–3.90%	Q3/2011

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(1.17%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.80%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.90%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Merger Arbitrage ETF | IQ Merger Arbitrage Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

6.70%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.89%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

4.18%

^[1],[2]

IQ Merger Arbitrage ETF | HFRI ED: Merger Arbitrage Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

4.31%

5 Years

rr_AverageAnnualReturnYear05

3.53%

Since Inception

rr_AverageAnnualReturnSinceInception

3.39%

^[2]

IQ Merger Arbitrage ETF | MSCI World Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

22.40%

5 Years

rr_AverageAnnualReturnYear05

11.64%

Since Inception

rr_AverageAnnualReturnSinceInception

9.63%

^[2]

IQ Merger Arbitrage ETF | S&P 500 Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

21.10%

5 Years

rr_AverageAnnualReturnYear05

15.07%

Since Inception

rr_AverageAnnualReturnSinceInception

13.08%

^[2]

IQ Merger Arbitrage ETF | IQ Merger Arbitrage ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[3]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.78%

^[3]

1 Year

rr_ExpenseExampleYear01

$ 80

3 Years

rr_ExpenseExampleYear03

249

5 Years

rr_ExpenseExampleYear05

433

10 Years

rr_ExpenseExampleYear10

$ 966

Annual Return 2010

rr_AnnualReturn2010

(0.36%)

Annual Return 2011

rr_AnnualReturn2011

(0.52%)

Annual Return 2012

rr_AnnualReturn2012

0.60%

Annual Return 2013

rr_AnnualReturn2013

7.66%

Annual Return 2014

rr_AnnualReturn2014

5.28%

Annual Return 2015

rr_AnnualReturn2015

1.26%

Annual Return 2016

rr_AnnualReturn2016

4.86%

Annual Return 2017

rr_AnnualReturn2017

5.86%

1 Year

rr_AverageAnnualReturnYear01

5.86%

5 Years

rr_AverageAnnualReturnYear05

4.97%

Since Inception

rr_AverageAnnualReturnSinceInception

3.15%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 17, 2009

IQ Merger Arbitrage ETF | IQ Merger Arbitrage ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.86%

^[4]

5 Years

rr_AverageAnnualReturnYear05

4.84%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

3.01%

^[2],[4]

IQ Merger Arbitrage ETF | IQ Merger Arbitrage ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.32%

^[4]

5 Years

rr_AverageAnnualReturnYear05

3.84%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

2.42%

^[2],[4]

[1] HFRI ED: Merger Arbitrage Index is calculated from December 1, 2009. Because index comparisons are generally calculated as of the end of each month, index performance information under the "Since Inception" heading may not be coincident with the inception date of the Fund. In such instances, index performance is generally presented from the month-end nearest to the inception date of the Fund.

[2] The Fund commenced operations on November 17, 2009.

[3] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[4] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ Global Resources ETF

IQ Global Resources ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Global Resources Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Global Resources ETF IQ Global Resources ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Acquired Fund Fees & Expenses	0.02%	[1]
Total Annual Fund Operating Expenses	0.78%	[1]

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Global Resources ETF | IQ Global Resources ETF | USD ($)	80	249	433	966

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 235% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to employ a systematic investment process designed to identify opportunities in markets exhibiting trending or momentum characteristics across commodity asset classes, represented by companies that operate in commodity-specific market segments and whose equity securities trade in developed markets, including the U.S. These segments include Livestock; Precious Metals; Grains, Food and Fiber; Energy; Metals; Timber; Coal; and Water. In addition, the Underlying Index includes short exposure to the U.S. and non-U.S. equity markets.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index consists of a number of Underlying Index Components selected in accordance with IndexIQ’s rules-based methodology. Such Underlying Index Components will include primarily U.S. and non-U.S. equity securities. In addition, the Fund may invest up to 20% of its net assets in investments not included in its Underlying Index, but which the Advisor believes will help the Fund track its Underlying Index. The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

When the Fund invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions.

Foreign Securities Valuation Risk

Because foreign exchanges may be open on days when the Fund does not price its shares, the value of the securities in the Fund’s portfolio may change on days when shareholders of the Fund will not be able to purchase or sell the Fund’s shares.

Global Resources Sector Risk

Because the Fund’s investments are concentrated in the global resources sector, the value of its shares will be affected by factors specific to that sector and may fluctuate more widely than that of a fund which invests in a broad range of industries.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid- and Small-Capitalization Companies Risk

Stocks of mid and small capitalization companies generally are more volatile, more vulnerable to adverse business and economic developments, and more thinly traded relative to those of larger companies.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions, including short exposure to securities indexes, introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short, have unlimited downside potential.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The S&P Global Natural Resources Index has replaced the MSCI World Index as the Fund’s primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The S&P Global Natural Resources Index includes 90 of the largest publicly-traded companies in natural resources and commodities business that meet specific investability requirements, offering investors diversified and investable equity exposure across three primary commodity related sectors: agribusiness, energy, and metal & mining. The Bloomberg Commodity Spot Index measures the price movements of commodities included in the Bloomberg Commodity Index. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -2.81%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	13.76%	Q3/2010
Lowest Return	–17.62%	Q3/2015

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Global Resources ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Global Resources ETF		13.37%	0.16%	2.82%		Oct. 27, 2009
IQ Global Resources ETF | Returns after taxes on distributions	[2]	13.37%	(0.07%)	2.61%
IQ Global Resources ETF | Returns after taxes on distributions and sale of Fund shares	[2]	7.56%	0.11%	2.25%
IQ Global Resources Index		15.17%	1.29%	3.99%
S&P Global Natural Resources Index		22.66%	2.50%	2.13%
Bloomberg Commodity Spot Index		7.56%	(3.91%)	0.46%
MSCI World Index		22.40%	11.64%	9.99%

[1] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on October 27, 2009.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ Global Resources ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Global Resources ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Global Resources Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 235% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

235.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund’s pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index seeks to employ a systematic investment process designed to identify opportunities in markets exhibiting trending or momentum characteristics across commodity asset classes, represented by companies that operate in commodity-specific market segments and whose equity securities trade in developed markets, including the U.S. These segments include Livestock; Precious Metals; Grains, Food and Fiber; Energy; Metals; Timber; Coal; and Water. In addition, the Underlying Index includes short exposure to the U.S. and non-U.S. equity markets.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index consists of a number of Underlying Index Components selected in accordance with IndexIQ’s rules-based methodology. Such Underlying Index Components will include primarily U.S. and non-U.S. equity securities. In addition, the Fund may invest up to 20% of its net assets in investments not included in its Underlying Index, but which the Advisor believes will help the Fund track its Underlying Index. The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index consists of a number of Underlying Index Components selected in accordance with IndexIQ’s rules-based methodology. Such Underlying Index Components will include primarily U.S. and non-U.S. equity securities. In addition, the Fund may invest up to 20% of its net assets in investments not included in its Underlying Index, but which the Advisor believes will help the Fund track its Underlying Index. The Fund may also invest in one or more financial instruments, including but not limited to futures contracts and swap agreements (collectively, “Financial Instruments”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

When the Fund invests in foreign markets, it will be subject to risk of loss not typically associated with domestic markets. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions.

Foreign Securities Valuation Risk

Because foreign exchanges may be open on days when the Fund does not price its shares, the value of the securities in the Fund’s portfolio may change on days when shareholders of the Fund will not be able to purchase or sell the Fund’s shares.

Global Resources Sector Risk

Because the Fund’s investments are concentrated in the global resources sector, the value of its shares will be affected by factors specific to that sector and may fluctuate more widely than that of a fund which invests in a broad range of industries.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid- and Small-Capitalization Companies Risk

Stocks of mid and small capitalization companies generally are more volatile, more vulnerable to adverse business and economic developments, and more thinly traded relative to those of larger companies.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Short Sales Risk

Short positions, including short exposure to securities indexes, introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short, have unlimited downside potential.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The S&P Global Natural Resources Index has replaced the MSCI World Index as the Fund’s primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The S&P Global Natural Resources Index includes 90 of the largest publicly-traded companies in natural resources and commodities business that meet specific investability requirements, offering investors diversified and investable equity exposure across three primary commodity related sectors: agribusiness, energy, and metal & mining. The Bloomberg Commodity Spot Index measures the price movements of commodities included in the Bloomberg Commodity Index. The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was -2.81%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	13.76%	Q3/2010
Lowest Return	–17.62%	Q3/2015

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(2.81%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2010

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.76%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2015

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.62%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Global Resources ETF | IQ Global Resources Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

15.17%

5 Years

rr_AverageAnnualReturnYear05

1.29%

Since Inception

rr_AverageAnnualReturnSinceInception

3.99%

^[1]

IQ Global Resources ETF | S&P Global Natural Resources Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

22.66%

5 Years

rr_AverageAnnualReturnYear05

2.50%

Since Inception

rr_AverageAnnualReturnSinceInception

2.13%

^[1]

IQ Global Resources ETF | Bloomberg Commodity Spot Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.56%

5 Years

rr_AverageAnnualReturnYear05

(3.91%)

Since Inception

rr_AverageAnnualReturnSinceInception

0.46%

^[1]

IQ Global Resources ETF | MSCI World Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

22.40%

5 Years

rr_AverageAnnualReturnYear05

11.64%

Since Inception

rr_AverageAnnualReturnSinceInception

9.99%

^[1]

IQ Global Resources ETF | IQ Global Resources ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Acquired Fund Fees & Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[2]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.78%

^[2]

1 Year

rr_ExpenseExampleYear01

$ 80

3 Years

rr_ExpenseExampleYear03

249

5 Years

rr_ExpenseExampleYear05

433

10 Years

rr_ExpenseExampleYear10

$ 966

Annual Return 2010

rr_AnnualReturn2010

23.93%

Annual Return 2011

rr_AnnualReturn2011

(9.14%)

Annual Return 2012

rr_AnnualReturn2012

7.61%

Annual Return 2013

rr_AnnualReturn2013

(3.28%)

Annual Return 2014

rr_AnnualReturn2014

(5.13%)

Annual Return 2015

rr_AnnualReturn2015

(19.37%)

Annual Return 2016

rr_AnnualReturn2016

20.18%

Annual Return 2017

rr_AnnualReturn2017

13.37%

1 Year

rr_AverageAnnualReturnYear01

13.37%

5 Years

rr_AverageAnnualReturnYear05

0.16%

Since Inception

rr_AverageAnnualReturnSinceInception

2.82%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 27, 2009

IQ Global Resources ETF | IQ Global Resources ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.37%

^[3]

5 Years

rr_AverageAnnualReturnYear05

(0.07%)

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

2.61%

^[1],[3]

IQ Global Resources ETF | IQ Global Resources ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.56%

^[3]

5 Years

rr_AverageAnnualReturnYear05

0.11%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

2.25%

^[1],[3]

[1] The Fund commenced operations on October 27, 2009.

[2] The Total Annual Fund Operating Expenses may not correlate to the ratio of expenses to average net assets as reported in the "Financial Highlights" section of the Prospectus, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees & Expenses. Acquired Fund Fees & Expenses represent the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ Global Agribusiness Small Cap ETF

IQ Global Agribusiness Small Cap ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Global Agribusiness Small Cap Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Global Agribusiness Small Cap ETF IQ Global Agribusiness Small Cap ETF
Management Fee	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Total Annual Fund Operating Expenses	0.76%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Global Agribusiness Small Cap ETF | IQ Global Agribusiness Small Cap ETF | USD ($)	78	243	422	942

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities or other instruments (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 11% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules based, modified capitalization weighted, float adjusted index intended to give investors a means of tracking the overall performance of the global, small capitalization sector of publicly traded companies that are engaged primarily in the agribusiness sector, including crop production and farming, livestock operations, agricultural machinery, agricultural chemicals, agricultural supplies and logistics, and biofuels (“Agribusiness Companies”).

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index Components that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each quarterly rebalance date:

• Issuers that are engaged in the agribusiness sector, as determined by Standard Industrial Classification (“SIC”) code classifications;

• Minimum average market capitalization of $150 million for the prior 90 days and as of the quarterly rebalance date;

• Maximum average market capitalization equal to the bottom 10 percent ranking of Agribusiness Companies globally based on market capitalization for the prior 90 days (the “Market Cap Ceiling”);

• Minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) may be added to the Underlying Index on a quarterly basis, provided that the companies meet all eligibility criteria and have been trading for more than 10 trading days. Existing Underlying Index Components whose average market capitalization falls below $100 million or increases above the level 65% higher than the Market Cap Ceiling for the 90 days prior to any rebalancing date will no longer be eligible for inclusion.

The Underlying Index Components are selected quarterly in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced quarterly in connection with the rebalance of the Underlying Index. As of June 30, 2018, the U.S. dollar-denominated market capitalizations of the Underlying Index Components ranged from approximately $208 million to approximately $4.9 billion. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies domiciled in Japan. For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions.

Geographic Concentration in Japan

Because a significant portion of the Fund’s assets may be invested in the securities of companies in Japan, the Fund’s performance may be particularly affected by social, political, and economic conditions within Japan and to be more volatile than the performance of more geographically diversified funds. The Japanese economy has only recently emerged from a prolonged economic downturn. Since the year 2000, Japan’s economic growth rate has remained relatively low.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Index Risk

The Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

The Fund will be concentrated in the agribusiness sector and the related industries. Concentrated Fund investments in industries related to the agribusiness sector will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Relationship to Commodities

The Underlying Index measures the performance of securities of Agribusiness Companies and not the agricultural commodities in which they trade. The securities of Agribusiness Companies may under- or over-perform agricultural commodities over the short-term or the long-term.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Risks of Investing in the Global Agribusiness Sector

Adverse weather conditions, economic forces and government policy and regulation could adversely affect the Fund’s portfolio companies and, thus, the Fund’s financial situation and performance.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The Russell Global Small Cap Agriculture Fishing & Ranching Index is composed of small capitalization issuers in the agriculture, fishing and ranching market segments. The MSCI World Small Cap Index is a free float-adjusted market capitalization index composed of small capitalization stocks in developed market countries.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -5.15%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	11.93%	Q1/2012
Lowest Return	–8.59%	Q3/2015

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ Global Agribusiness Small Cap ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ Global Agribusiness Small Cap ETF		11.52%	7.94%	6.20%		Mar. 22, 2011
IQ Global Agribusiness Small Cap ETF | Returns after taxes on distributions	[2]	11.37%	7.67%	5.97%
IQ Global Agribusiness Small Cap ETF | Returns after taxes on distributions and sale of Fund shares	[2]	6.80%	6.27%	4.95%
IQ Global Agribusiness Small Cap Index		12.80%	8.74%	6.98%
Russell Global Small Cap Agriculture Fishing & Ranching Index		17.60%	8.12%	5.38%
MSCI World Small Cap Index		22.66%	13.20%	10.18%

[1] The Fund commenced operations on March 22, 2011.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ Global Agribusiness Small Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Global Agribusiness Small Cap ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Global Agribusiness Small Cap Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities or other instruments (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 11% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

11.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules based, modified capitalization weighted, float adjusted index intended to give investors a means of tracking the overall performance of the global, small capitalization sector of publicly traded companies that are engaged primarily in the agribusiness sector, including crop production and farming, livestock operations, agricultural machinery, agricultural chemicals, agricultural supplies and logistics, and biofuels (“Agribusiness Companies”).

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”). The Underlying Index Components that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each quarterly rebalance date:

• Issuers that are engaged in the agribusiness sector, as determined by Standard Industrial Classification (“SIC”) code classifications;

• Minimum average market capitalization of $150 million for the prior 90 days and as of the quarterly rebalance date;

• Maximum average market capitalization equal to the bottom 10 percent ranking of Agribusiness Companies globally based on market capitalization for the prior 90 days (the “Market Cap Ceiling”);

• Minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) may be added to the Underlying Index on a quarterly basis, provided that the companies meet all eligibility criteria and have been trading for more than 10 trading days. Existing Underlying Index Components whose average market capitalization falls below $100 million or increases above the level 65% higher than the Market Cap Ceiling for the 90 days prior to any rebalancing date will no longer be eligible for inclusion.

The Underlying Index Components are selected quarterly in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced quarterly in connection with the rebalance of the Underlying Index. As of June 30, 2018, the U.S. dollar-denominated market capitalizations of the Underlying Index Components ranged from approximately $208 million to approximately $4.9 billion. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies domiciled in Japan. For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index (“Underlying Index Components”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities. Loss may result because of less foreign government regulation, less public information and less economic, political and social stability. Loss may also result from the imposition of exchange controls, confiscations and other government restrictions.

Geographic Concentration in Japan

Because a significant portion of the Fund’s assets may be invested in the securities of companies in Japan, the Fund’s performance may be particularly affected by social, political, and economic conditions within Japan and to be more volatile than the performance of more geographically diversified funds. The Japanese economy has only recently emerged from a prolonged economic downturn. Since the year 2000, Japan’s economic growth rate has remained relatively low.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Index Risk

The Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

The Fund will be concentrated in the agribusiness sector and the related industries. Concentrated Fund investments in industries related to the agribusiness sector will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Relationship to Commodities

The Underlying Index measures the performance of securities of Agribusiness Companies and not the agricultural commodities in which they trade. The securities of Agribusiness Companies may under- or over-perform agricultural commodities over the short-term or the long-term.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Risks of Investing in the Global Agribusiness Sector

Adverse weather conditions, economic forces and government policy and regulation could adversely affect the Fund’s portfolio companies and, thus, the Fund’s financial situation and performance.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The Russell Global Small Cap Agriculture Fishing & Ranching Index is composed of small capitalization issuers in the agriculture, fishing and ranching market segments. The MSCI World Small Cap Index is a free float-adjusted market capitalization index composed of small capitalization stocks in developed market countries.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was -5.15%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	11.93%	Q1/2012
Lowest Return	–8.59%	Q3/2015

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(5.15%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.93%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2015

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(8.59%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ Global Agribusiness Small Cap ETF | IQ Global Agribusiness Small Cap Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

12.80%

5 Years

rr_AverageAnnualReturnYear05

8.74%

Since Inception

rr_AverageAnnualReturnSinceInception

6.98%

^[1]

IQ Global Agribusiness Small Cap ETF | Russell Global Small Cap Agriculture Fishing & Ranching Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

17.60%

5 Years

rr_AverageAnnualReturnYear05

8.12%

Since Inception

rr_AverageAnnualReturnSinceInception

5.38%

^[1]

IQ Global Agribusiness Small Cap ETF | MSCI World Small Cap Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

22.66%

5 Years

rr_AverageAnnualReturnYear05

13.20%

Since Inception

rr_AverageAnnualReturnSinceInception

10.18%

^[1]

IQ Global Agribusiness Small Cap ETF | IQ Global Agribusiness Small Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.76%

1 Year

rr_ExpenseExampleYear01

$ 78

3 Years

rr_ExpenseExampleYear03

243

5 Years

rr_ExpenseExampleYear05

422

10 Years

rr_ExpenseExampleYear10

$ 942

Annual Return 2012

rr_AnnualReturn2012

13.69%

Annual Return 2013

rr_AnnualReturn2013

9.48%

Annual Return 2014

rr_AnnualReturn2014

(6.47%)

Annual Return 2015

rr_AnnualReturn2015

13.39%

Annual Return 2016

rr_AnnualReturn2016

13.16%

Annual Return 2017

rr_AnnualReturn2017

11.52%

1 Year

rr_AverageAnnualReturnYear01

11.52%

5 Years

rr_AverageAnnualReturnYear05

7.94%

Since Inception

rr_AverageAnnualReturnSinceInception

6.20%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 22, 2011

IQ Global Agribusiness Small Cap ETF | IQ Global Agribusiness Small Cap ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.37%

^[2]

5 Years

rr_AverageAnnualReturnYear05

7.67%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

5.97%

^[1],[2]

IQ Global Agribusiness Small Cap ETF | IQ Global Agribusiness Small Cap ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.80%

^[2]

5 Years

rr_AverageAnnualReturnYear05

6.27%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

4.95%

^[1],[2]

[1] The Fund commenced operations on March 22, 2011.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ U.S. Real Estate Small Cap ETF

IQ U.S. Real Estate Small Cap ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ U.S. Real Estate Small Cap Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ U.S. Real Estate Small Cap ETF IQ U.S. Real Estate Small Cap ETF
Management Fee	0.69%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.70%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ U.S. Real Estate Small Cap ETF | IQ U.S. Real Estate Small Cap ETF | USD ($)	72	224	390	871

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 27% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules based, modified capitalization weighted, float adjusted index intended to give investors a means of tracking the overall performance of the small capitalization sector of publicly traded companies domiciled and primarily listed on an exchange in the United States (“U.S.”) and that invest in real estate, such as Real Estate Investment Trusts (“REITs”) or real estate holding companies (collectively, “Real Estate Companies”).

The components of the Underlying Index (the “Underlying Index Components”) that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each quarterly rebalance date:

• Issuer engaged in the real estate investment industry, as determined by Standard Industrial Classification (“SIC”) code classifications;

• Issuer domiciled in the U.S.;

• Primary stock exchange listing in the U.S.;

• Minimum average market capitalization of $150 million for the prior 90 days and as of the quarterly rebalance date;

• Maximum average market capitalization equal to the bottom 10% ranking of Real Estate Companies in the U.S. based on market capitalization for the prior 90 days (the “Market Cap Ceiling”);

• Minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) may be added to the Underlying Index on a quarterly basis, provided that the companies meet all eligibility criteria and have been trading for more than ten trading days. Existing Underlying Index Components whose average market capitalization falls below $100 million or increases above the level 65% higher than the Market Cap Ceiling for the 90 days prior to any rebalancing date will no longer be eligible for inclusion.

The Underlying Index Components are selected quarterly in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced quarterly in connection with the rebalance of the Underlying Index.

As of June 30, 2018, the U.S. dollar-denominated market capitalizations of the Underlying Index Components ranged from approximately $212 million to approximately $3.3 billion.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index. For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Concentration Risk

The Fund’s investments are concentrated in the Real Estate markets. To the extent that the Fund’s investments are concentrated in a particular country, market, industry or asset class, the Fund will be susceptible to loss due to adverse occurrences affecting that country, market, industry or asset class.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Real Estate Investment Risks

The Fund invests in companies that invest in real estate and thus is exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The Dow Jones U.S. Real Estate Index measures the stock performance of REITs and real estate operating companies in the U.S.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was 2.98%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	17.97%	Q1/2013
Lowest Return	–8.10%	Q2/2015

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ U.S. Real Estate Small Cap ETF		1 Year	5 Years	Since Inception	[1]	Inception Date
IQ U.S. Real Estate Small Cap ETF		2.09%	9.49%	10.47%		Jun. 14, 2011
IQ U.S. Real Estate Small Cap ETF | Returns after taxes on distributions	[2]	0.97%	7.62%	8.63%
IQ U.S. Real Estate Small Cap ETF | Returns after taxes on distributions and sale of Fund shares	[2]	1.19%	6.53%	7.45%
IQ U.S. Real Estate Small Cap Index		2.79%	10.34%	11.33%
Dow Jones U.S. Real Estate Index		9.84%	9.34%	9.93%

[1] Other expenses include the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[1] The Fund commenced operations on June 14, 2011.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ U.S. Real Estate Small Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ U.S. Real Estate Small Cap ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ U.S. Real Estate Small Cap Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 27% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

27.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules based, modified capitalization weighted, float adjusted index intended to give investors a means of tracking the overall performance of the small capitalization sector of publicly traded companies domiciled and primarily listed on an exchange in the United States (“U.S.”) and that invest in real estate, such as Real Estate Investment Trusts (“REITs”) or real estate holding companies (collectively, “Real Estate Companies”).

The components of the Underlying Index (the “Underlying Index Components”) that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each quarterly rebalance date:

• Issuer engaged in the real estate investment industry, as determined by Standard Industrial Classification (“SIC”) code classifications;

• Issuer domiciled in the U.S.;

• Primary stock exchange listing in the U.S.;

• Minimum average market capitalization of $150 million for the prior 90 days and as of the quarterly rebalance date;

• Maximum average market capitalization equal to the bottom 10% ranking of Real Estate Companies in the U.S. based on market capitalization for the prior 90 days (the “Market Cap Ceiling”);

• Minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) may be added to the Underlying Index on a quarterly basis, provided that the companies meet all eligibility criteria and have been trading for more than ten trading days. Existing Underlying Index Components whose average market capitalization falls below $100 million or increases above the level 65% higher than the Market Cap Ceiling for the 90 days prior to any rebalancing date will no longer be eligible for inclusion.

The Underlying Index Components are selected quarterly in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced quarterly in connection with the rebalance of the Underlying Index.

As of June 30, 2018, the U.S. dollar-denominated market capitalizations of the Underlying Index Components ranged from approximately $212 million to approximately $3.3 billion.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index. For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the investments included in its Underlying Index. For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Concentration Risk

The Fund’s investments are concentrated in the Real Estate markets. To the extent that the Fund’s investments are concentrated in a particular country, market, industry or asset class, the Fund will be susceptible to loss due to adverse occurrences affecting that country, market, industry or asset class.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Real Estate Investment Risks

The Fund invests in companies that invest in real estate and thus is exposed to risks inherent to the real estate market, including concentration risk, interest rate risk, leverage risk, property risk and management risk.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Non-Diversified Risk

The Fund is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”) and is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest larger proportions of its assets in a single industry within the industries that comprise the Underlying Index.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The Dow Jones U.S. Real Estate Index measures the stock performance of REITs and real estate operating companies in the U.S.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was 2.98%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	17.97%	Q1/2013
Lowest Return	–8.10%	Q2/2015

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

2.98%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2013

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

17.97%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2015

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(8.10%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ U.S. Real Estate Small Cap ETF | IQ U.S. Real Estate Small Cap Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

2.79%

5 Years

rr_AverageAnnualReturnYear05

10.34%

Since Inception

rr_AverageAnnualReturnSinceInception

11.33%

^[1]

IQ U.S. Real Estate Small Cap ETF | Dow Jones U.S. Real Estate Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.84%

5 Years

rr_AverageAnnualReturnYear05

9.34%

Since Inception

rr_AverageAnnualReturnSinceInception

9.93%

^[1]

IQ U.S. Real Estate Small Cap ETF | IQ U.S. Real Estate Small Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.69%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[2]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.70%

1 Year

rr_ExpenseExampleYear01

$ 72

3 Years

rr_ExpenseExampleYear03

224

5 Years

rr_ExpenseExampleYear05

390

10 Years

rr_ExpenseExampleYear10

$ 871

Annual Return 2012

rr_AnnualReturn2012

34.09%

Annual Return 2013

rr_AnnualReturn2013

15.14%

Annual Return 2014

rr_AnnualReturn2014

20.68%

Annual Return 2015

rr_AnnualReturn2015

(6.94%)

Annual Return 2016

rr_AnnualReturn2016

19.21%

Annual Return 2017

rr_AnnualReturn2017

2.09%

1 Year

rr_AverageAnnualReturnYear01

2.09%

5 Years

rr_AverageAnnualReturnYear05

9.49%

Since Inception

rr_AverageAnnualReturnSinceInception

10.47%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 14, 2011

IQ U.S. Real Estate Small Cap ETF | IQ U.S. Real Estate Small Cap ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.97%

^[3]

5 Years

rr_AverageAnnualReturnYear05

7.62%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

8.63%

^[1],[3]

IQ U.S. Real Estate Small Cap ETF | IQ U.S. Real Estate Small Cap ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.19%

^[3]

5 Years

rr_AverageAnnualReturnYear05

6.53%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

7.45%

^[1],[3]

[1] The Fund commenced operations on June 14, 2011.

[2] Other expenses include the Fund's pro rata share of fees and expenses incurred indirectly as a result of investing in other funds, including ETFs and money market funds.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ Fastest Growing Companies ETF

IQ Fastest Growing Companies ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Fastest Growing Companies Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Fastest Growing Companies ETF IQ Fastest Growing Companies ETF
Management Fee	0.49%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.50%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Fastest Growing Companies ETF | IQ Fastest Growing Companies ETF | USD ($)	51	160

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules-based, index intended to give investors exposure to high growth United States (“U.S.”) companies, as measured by several growth factors.

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the components that make up its Underlying Index (the “Underlying Index Components”).

After establishing the eligible universe of companies, the Underlying Index selects for inclusion and weights the top 50 eligible issuers based on the following growth-related factors:

• Sales growth;

• Net income growth;

• Cash flow growth; and

• Total return.

The factors above were chosen to isolate companies that have historically demonstrated an ability to generate high levels of shareholder value by consistently achieving significant growth rates across multiple financial factors.

The Underlying Index Components that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each annual rebalance date:

• Issuer must be domiciled in the U.S.;

• Issuer’s shares must have their primary stock exchange listing in the U.S.;

• Issuer must be ranked within the top 500 U.S. public companies by sales;

• Issuer must have a minimum average market capitalization of $1.5 billion for the 60 days prior to and as of the annual rebalance date;

• Issuer’s shares must have minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Issuer’s shares must have minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) that meet all of the eligibility criteria may be added to the Underlying Index on an annual basis, provided that the companies’ securities have been trading for at least six months.

The Underlying Index Components are selected annually in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced annually in connection with the rebalance of the Underlying Index.

As of June 30, 2018, the market capitalizations of the Underlying Index Components ranged from approximately $2.0 billion to approximately $827.8 billion.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Growth Securities Risk

The Fund invests in securities of high growth companies, which may be more volatile than other types of investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio many also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Companies Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volume, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments. The Fund invests in the securities of mid-capitalization companies, the value of which may be more volatile than those of larger companies.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Fastest Growing Companies ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Fastest Growing Companies ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Fastest Growing Companies Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules-based, index intended to give investors exposure to high growth United States (“U.S.”) companies, as measured by several growth factors.

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the components that make up its Underlying Index (the “Underlying Index Components”).

After establishing the eligible universe of companies, the Underlying Index selects for inclusion and weights the top 50 eligible issuers based on the following growth-related factors:

• Sales growth;

• Net income growth;

• Cash flow growth; and

• Total return.

The factors above were chosen to isolate companies that have historically demonstrated an ability to generate high levels of shareholder value by consistently achieving significant growth rates across multiple financial factors.

The Underlying Index Components that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each annual rebalance date:

• Issuer must be domiciled in the U.S.;

• Issuer’s shares must have their primary stock exchange listing in the U.S.;

• Issuer must be ranked within the top 500 U.S. public companies by sales;

• Issuer must have a minimum average market capitalization of $1.5 billion for the 60 days prior to and as of the annual rebalance date;

• Issuer’s shares must have minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Issuer’s shares must have minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) that meet all of the eligibility criteria may be added to the Underlying Index on an annual basis, provided that the companies’ securities have been trading for at least six months.

The Underlying Index Components are selected annually in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced annually in connection with the rebalance of the Underlying Index.

As of June 30, 2018, the market capitalizations of the Underlying Index Components ranged from approximately $2.0 billion to approximately $827.8 billion.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the components that make up its Underlying Index (the “Underlying Index Components”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Growth Securities Risk

The Fund invests in securities of high growth companies, which may be more volatile than other types of investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio many also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Companies Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volume, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments. The Fund invests in the securities of mid-capitalization companies, the value of which may be more volatile than those of larger companies.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Fastest Growing Companies ETF | IQ Fastest Growing Companies ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.49%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.50%

1 Year

rr_ExpenseExampleYear01

$ 51

3 Years

rr_ExpenseExampleYear03

$ 160

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

IQ Innovation Leaders ETF

IQ Innovation Leaders ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Innovation Leaders Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Innovation Leaders ETF IQ Innovation Leaders ETF
Management Fee	0.49%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.50%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Innovation Leaders ETF | IQ Innovation Leaders ETF | USD ($)	51	160

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules-based index intended to give investors exposure to highly innovative United States (“U.S.”) companies, as measured by several innovation-related factors.

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the components that make up its Underlying Index (the “Underlying Index Components”).

After establishing the eligible universe of companies, the Underlying Index selects for inclusion and weights the top 100 companies based on the following innovation-related factors:

• Sales growth;

• Research and development expense / total assets;

• Retained earnings / sales;

• Capital expenditures / total assets; and

• Intangible assets / total assets.

The factors above were chosen to isolate companies that have historically achieved high levels of sales growth and are significantly re-investing in their own businesses, through technology and other intangible and tangible assets, to drive future sales and earnings growth.

The Underlying Index Components that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each annual rebalance date:

• Issuer must be domiciled in the U.S.;

• Issuer’s shares must have their primary stock exchange listing in the U.S.;

• Issuer must have a minimum average market capitalization of $300 million for the 60 days prior to and as of the annual rebalance date;

• Issuer’s shares must have minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Issuer’s shares must have minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) that meet all of the eligibility criteria may be added to the Underlying Index on an annual basis, provided that the companies’ securities have been trading for at least six months.

The Underlying Index Components are selected annually in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced annually in connection with the rebalance of the Underlying Index.

As of June 30, 2018, the market capitalizations of the Underlying Index Components ranged from approximately $507 million to approximately $827.8 billion.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Growth Securities Risk

The Fund invests in securities of high growth companies, which may be more volatile than other types of investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio many also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Innovative Company Risk

The Fund invests in the securities of highly innovative companies, which issuers tend to be high growth and generally may be more volatile than other types of investments.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Companies Risk

Stocks of mid-capitalization companies may be subject to greater price volatility, significantly lower trading volume, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments. The Fund invests in the securities of mid-capitalization companies, the value of which may be more volatile than those of larger companies.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Innovation Leaders ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Innovation Leaders ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the IQ Innovation Leaders Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”), an affiliate of IndexIQ Advisors LLC, the Fund’s investment advisor (the “Advisor”). The Underlying Index is a rules-based index intended to give investors exposure to highly innovative United States (“U.S.”) companies, as measured by several innovation-related factors.

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the components that make up its Underlying Index (the “Underlying Index Components”).

After establishing the eligible universe of companies, the Underlying Index selects for inclusion and weights the top 100 companies based on the following innovation-related factors:

• Sales growth;

• Research and development expense / total assets;

• Retained earnings / sales;

• Capital expenditures / total assets; and

• Intangible assets / total assets.

The factors above were chosen to isolate companies that have historically achieved high levels of sales growth and are significantly re-investing in their own businesses, through technology and other intangible and tangible assets, to drive future sales and earnings growth.

The Underlying Index Components that are eligible for inclusion in the Underlying Index include the following characteristics, measured as of each annual rebalance date:

• Issuer must be domiciled in the U.S.;

• Issuer’s shares must have their primary stock exchange listing in the U.S.;

• Issuer must have a minimum average market capitalization of $300 million for the 60 days prior to and as of the annual rebalance date;

• Issuer’s shares must have minimum average daily trading volume of at least $1 million for the prior 90 days; and

• Issuer’s shares must have minimum monthly volume of 250,000 shares each month over the prior six months.

Securities of issuers with recent stock exchange listings (i.e., recent initial public offerings) that meet all of the eligibility criteria may be added to the Underlying Index on an annual basis, provided that the companies’ securities have been trading for at least six months.

The Underlying Index Components are selected annually in connection with the reconstitution of the Underlying Index. Their respective weights are rebalanced annually in connection with the rebalance of the Underlying Index.

As of June 30, 2018, the market capitalizations of the Underlying Index Components ranged from approximately $507 million to approximately $827.8 billion.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Investment Strategies of the Funds.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the components that make up its Underlying Index (the “Underlying Index Components”).

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Growth Securities Risk

The Fund invests in securities of high growth companies, which may be more volatile than other types of investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio many also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Innovative Company Risk

The Fund invests in the securities of highly innovative companies, which issuers tend to be high growth and generally may be more volatile than other types of investments.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Companies Risk

Stocks of mid-capitalization companies may be subject to greater price volatility, significantly lower trading volume, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments. The Fund invests in the securities of mid-capitalization companies, the value of which may be more volatile than those of larger companies.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Small Capitalization Companies Risk

The Fund invests in the securities of small capitalization companies, the value of which may be more volatile than those of larger companies.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Innovation Leaders ETF | IQ Innovation Leaders ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.49%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.50%

1 Year

rr_ExpenseExampleYear01

$ 51

3 Years

rr_ExpenseExampleYear03

$ 160

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

IQ Chaikin U.S. Dividend Achievers ETF

IQ Chaikin U.S. Dividend Achievers ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the Nasdaq Chaikin Power US Dividend Achievers Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Chaikin U.S. Dividend Achievers ETF IQ Chaikin U.S. Dividend Achievers ETF
Management Fee	0.35%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.36%
Expense Waiver/Reimbursement	0.01%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.35%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Chaikin U.S. Dividend Achievers ETF | IQ Chaikin U.S. Dividend Achievers ETF | USD ($)	36	115

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which has been developed by Nasdaq, Inc. (the “Index Provider”). The Underlying Index applies a shareholder yield model, an analysis of the price to sales ratio, and the Chaikin Power Gauge^®, a quantitative multi-factor model that seeks to identify securities that are expected to outperform peers, to select securities from the Nasdaq US Broad Dividend Achievers Index (the “Parent Index”). The Parent Index is a modified capitalization-weighted index of U.S. securities with at least ten consecutive years of increasing annual regular dividend payments. The Underlying Index is an equally weighted index of small-, mid and large-capitalization securities. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $1.0 billion to $350.2 billion.

The Underlying Index uses the Chaikin Power Gauge to select securities from the Parent Index. The Chaikin Power Gauge is a multi-factor model that evaluates four primary components:

• Value component (35% of rating), which uses factors such as long term debt to equity ratio, price to book ratio, and free cash flow to identify companies that are priced at a discount relative to peers;

• Growth component (20% of rating), which uses factors such as earnings growth, earnings trend, and earnings consistency to identify companies with higher growth potential;

• Technical component (15% of rating), which uses factors such as price trend, price trend rate of change, and volume trend to identify stocks with strong momentum and price appreciation; and

• Sentiment component (30% of rating), which uses factors such as earnings estimate trend, short interest, and industry relative strength to identify companies that are expected to outperform peers by informed Wall Street analysts and professionals.

The Chaikin Power Gauge seeks to identify each security’s current potential to outperform or underperform compared with peers.

The Underlying Index also applies a “Shareholder Yield Model” that analyzes dividends paid, net long-term debt issued, share buybacks and market capitalization to seek to identify companies that are positioned to continue delivering returns to shareholders through dividends and stock buybacks.

To be selected for inclusion in the Underlying Index, a security must have a Shareholder Yield Model score in the top 50% of the Parent Index, a price to sales ratio of less than two, and a Chaikin Power Gauge ranking in the top 72% of the Parent Index.

The security types eligible for inclusion in the Underlying Index include common stocks, limited partnership interests, shares or units of beneficial interest and shares of limited liability companies. The Underlying Index rebalances and reconstitutes annually and typically consists of 50 to 65 securities. As of June 30, 2018, the primary sectors within the Underlying Index are industrials and financials. The composition of the Underlying Index may change over time.

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of dividend paying U.S. issuers.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Dividend Paying Security Risk

Securities that pay high dividends as a group can fall out of favor with the market, causing such companies to underperform companies that do not pay high dividends. Also, changes in the dividend policies of the companies in the Underlying Index and the capital resources available for such companies’ dividend payments may affect the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Industrials Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. dividend-paying equity securities that are expected to outperform peers based upon a quantitative multi-factor model. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to equity securities that outperform their peers. Furthermore, an investment in a security that outperforms its peers may still lose money.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Small-Capitalization Stock Risk

Stock prices of small-capitalization companies may be more volatile than those of larger companies and, therefore, the Fund’s share price may be more volatile than those of funds that invest a larger percentage of their assets in stocks issued by mid- or large-capitalization companies. Stock prices of small-capitalization companies are generally more vulnerable than those of mid- or large-capitalization companies to adverse business and economic developments. Securities of small-capitalization companies may be thinly traded, making it difficult for the Fund to buy and sell them. In addition, small-capitalization companies are typically less financially stable than larger, more established companies and may depend on a small number of essential personnel, making these companies more vulnerable to experiencing adverse effects due to the loss of personnel. Small capitalization companies also normally have less diverse product lines than those of mid- or large-capitalization companies and are more susceptible to adverse developments concerning their products.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.35% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

Label

Element

Value

IQ Chaikin U.S. Dividend Achievers ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Chaikin U.S. Dividend Achievers ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the Nasdaq Chaikin Power US Dividend Achievers Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which has been developed by Nasdaq, Inc. (the “Index Provider”). The Underlying Index applies a shareholder yield model, an analysis of the price to sales ratio, and the Chaikin Power Gauge^®, a quantitative multi-factor model that seeks to identify securities that are expected to outperform peers, to select securities from the Nasdaq US Broad Dividend Achievers Index (the “Parent Index”). The Parent Index is a modified capitalization-weighted index of U.S. securities with at least ten consecutive years of increasing annual regular dividend payments. The Underlying Index is an equally weighted index of small-, mid and large-capitalization securities. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $1.0 billion to $350.2 billion.

The Underlying Index uses the Chaikin Power Gauge to select securities from the Parent Index. The Chaikin Power Gauge is a multi-factor model that evaluates four primary components:

• Value component (35% of rating), which uses factors such as long term debt to equity ratio, price to book ratio, and free cash flow to identify companies that are priced at a discount relative to peers;

• Growth component (20% of rating), which uses factors such as earnings growth, earnings trend, and earnings consistency to identify companies with higher growth potential;

• Technical component (15% of rating), which uses factors such as price trend, price trend rate of change, and volume trend to identify stocks with strong momentum and price appreciation; and

• Sentiment component (30% of rating), which uses factors such as earnings estimate trend, short interest, and industry relative strength to identify companies that are expected to outperform peers by informed Wall Street analysts and professionals.

The Chaikin Power Gauge seeks to identify each security’s current potential to outperform or underperform compared with peers.

The Underlying Index also applies a “Shareholder Yield Model” that analyzes dividends paid, net long-term debt issued, share buybacks and market capitalization to seek to identify companies that are positioned to continue delivering returns to shareholders through dividends and stock buybacks.

To be selected for inclusion in the Underlying Index, a security must have a Shareholder Yield Model score in the top 50% of the Parent Index, a price to sales ratio of less than two, and a Chaikin Power Gauge ranking in the top 72% of the Parent Index.

The security types eligible for inclusion in the Underlying Index include common stocks, limited partnership interests, shares or units of beneficial interest and shares of limited liability companies. The Underlying Index rebalances and reconstitutes annually and typically consists of 50 to 65 securities. As of June 30, 2018, the primary sectors within the Underlying Index are industrials and financials. The composition of the Underlying Index may change over time.

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of dividend paying U.S. issuers.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of dividend paying U.S. issuers.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Dividend Paying Security Risk

Securities that pay high dividends as a group can fall out of favor with the market, causing such companies to underperform companies that do not pay high dividends. Also, changes in the dividend policies of the companies in the Underlying Index and the capital resources available for such companies’ dividend payments may affect the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Industrials Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. dividend-paying equity securities that are expected to outperform peers based upon a quantitative multi-factor model. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to equity securities that outperform their peers. Furthermore, an investment in a security that outperforms its peers may still lose money.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Small-Capitalization Stock Risk

Stock prices of small-capitalization companies may be more volatile than those of larger companies and, therefore, the Fund’s share price may be more volatile than those of funds that invest a larger percentage of their assets in stocks issued by mid- or large-capitalization companies. Stock prices of small-capitalization companies are generally more vulnerable than those of mid- or large-capitalization companies to adverse business and economic developments. Securities of small-capitalization companies may be thinly traded, making it difficult for the Fund to buy and sell them. In addition, small-capitalization companies are typically less financially stable than larger, more established companies and may depend on a small number of essential personnel, making these companies more vulnerable to experiencing adverse effects due to the loss of personnel. Small capitalization companies also normally have less diverse product lines than those of mid- or large-capitalization companies and are more susceptible to adverse developments concerning their products.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Chaikin U.S. Dividend Achievers ETF | IQ Chaikin U.S. Dividend Achievers ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.35%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.36%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.35%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 36

3 Years

rr_ExpenseExampleYear03

$ 115

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.35% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

IQ Chaikin U.S. Large Cap ETF

IQ Chaikin U.S. Large Cap ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the Nasdaq Chaikin Power US Large Cap Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Chaikin U.S. Large Cap ETF IQ Chaikin U.S. Large Cap ETF
Management Fee	0.25%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.26%
Expense Waiver/Reimbursement	0.01%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.25%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Chaikin U.S. Large Cap ETF | IQ Chaikin U.S. Large Cap ETF | USD ($)	26	83	145	330

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 94% of the average value of the portfolio. This rate excludes the value of the portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which has been developed by Nasdaq, Inc. (the “Index Provider”). The Underlying Index applies the Chaikin Power Gauge^®, a quantitative multi-factor model that seeks to identify securities that are expected to outperform peers, to select securities from the Nasdaq US 300 Index (the “Parent Index”). The Parent Index is a modified capitalization-weighted index of U.S. large-capitalization securities. The Underlying Index is an equally weighted index of large-capitalization securities. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $13.5 billion to $460.5 billion.

The Underlying Index uses the Chaikin Power Gauge to select securities from the Parent Index. The Chaikin Power Gauge is a multi-factor model that evaluates four primary components:

• Value component (35% of rating), which uses factors such as long term debt to equity ratio, price to book ratio, and free cash flow to identify companies that are priced at a discount relative to peers;

• Growth component (20% of rating), which uses factors such as earnings growth, earnings trend, and earnings consistency to identify companies with higher growth potential;

• Technical component (15% of rating), which uses factors such as price trend, price trend rate of change, and volume trend to identify stocks with strong momentum and price appreciation; and

• Sentiment component (30% of rating), which uses factors such as earnings estimate trend, short interest, and industry relative strength to identify companies that are expected to outperform peers by informed Wall Street analysts and professionals.

The Chaikin Power Gauge seeks to identify each security’s current potential to outperform or underperform compared with peers.

To be selected for inclusion in the Underlying Index, a security must have a Chaikin Power Gauge ranking in the top 14% of the Parent Index, or a Chaikin Power Gauge ranking in the top 28% of the Parent Index and a price to book value ranking in the lowest quintile of the Parent Index.

The security types eligible for inclusion in the Underlying Index include common stocks and real estate investment trusts (REITs). The Underlying Index rebalances and reconstitutes annually and typically consists of 45 to 65 securities. As of June 30, 2018, the primary sectors within the Underlying Index are information technology and financials. The composition of the Underlying Index may change over time.

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of large-capitalization U.S. issuers. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financial sector and information technology sector.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Information Technology Sector Risk

Information technology companies face intense competition and potentially rapid product obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by the loss or impairment of those rights.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. large-capitalization equity securities that are expected to outperform peers based upon a quantitative multi-factor model. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to equity securities that outperform their peers. Furthermore, an investment in a security that outperforms its peers may still lose money.

Large-Capitalization Companies Risk

Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions. Large-capitalization companies may be more mature and subject to more limited growth potential compared with smaller capitalization companies. During different market cycles, the performance of large capitalization companies has trailed the overall performance of the broader securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.25% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

Label

Element

Value

IQ Chaikin U.S. Large Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Chaikin U.S. Large Cap ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the Nasdaq Chaikin Power US Large Cap Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 94% of the average value of the portfolio. This rate excludes the value of the portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

94.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which has been developed by Nasdaq, Inc. (the “Index Provider”). The Underlying Index applies the Chaikin Power Gauge^®, a quantitative multi-factor model that seeks to identify securities that are expected to outperform peers, to select securities from the Nasdaq US 300 Index (the “Parent Index”). The Parent Index is a modified capitalization-weighted index of U.S. large-capitalization securities. The Underlying Index is an equally weighted index of large-capitalization securities. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $13.5 billion to $460.5 billion.

The Underlying Index uses the Chaikin Power Gauge to select securities from the Parent Index. The Chaikin Power Gauge is a multi-factor model that evaluates four primary components:

• Value component (35% of rating), which uses factors such as long term debt to equity ratio, price to book ratio, and free cash flow to identify companies that are priced at a discount relative to peers;

• Growth component (20% of rating), which uses factors such as earnings growth, earnings trend, and earnings consistency to identify companies with higher growth potential;

• Technical component (15% of rating), which uses factors such as price trend, price trend rate of change, and volume trend to identify stocks with strong momentum and price appreciation; and

• Sentiment component (30% of rating), which uses factors such as earnings estimate trend, short interest, and industry relative strength to identify companies that are expected to outperform peers by informed Wall Street analysts and professionals.

The Chaikin Power Gauge seeks to identify each security’s current potential to outperform or underperform compared with peers.

To be selected for inclusion in the Underlying Index, a security must have a Chaikin Power Gauge ranking in the top 14% of the Parent Index, or a Chaikin Power Gauge ranking in the top 28% of the Parent Index and a price to book value ranking in the lowest quintile of the Parent Index.

The security types eligible for inclusion in the Underlying Index include common stocks and real estate investment trusts (REITs). The Underlying Index rebalances and reconstitutes annually and typically consists of 45 to 65 securities. As of June 30, 2018, the primary sectors within the Underlying Index are information technology and financials. The composition of the Underlying Index may change over time.

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of large-capitalization U.S. issuers. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financial sector and information technology sector.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of large-capitalization U.S. issuers. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financial sector and information technology sector.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Information Technology Sector Risk

Information technology companies face intense competition and potentially rapid product obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by the loss or impairment of those rights.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. large-capitalization equity securities that are expected to outperform peers based upon a quantitative multi-factor model. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to equity securities that outperform their peers. Furthermore, an investment in a security that outperforms its peers may still lose money.

Large-Capitalization Companies Risk

Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions. Large-capitalization companies may be more mature and subject to more limited growth potential compared with smaller capitalization companies. During different market cycles, the performance of large capitalization companies has trailed the overall performance of the broader securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

IQ Chaikin U.S. Large Cap ETF | IQ Chaikin U.S. Large Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.25%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.26%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.25%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 26

3 Years

rr_ExpenseExampleYear03

83

5 Years

rr_ExpenseExampleYear05

145

10 Years

rr_ExpenseExampleYear10

$ 330

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.25% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

IQ Chaikin U.S. Small Cap ETF

IQ Chaikin U.S. Small Cap ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the Nasdaq Chaikin Power US Small Cap Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Chaikin U.S. Small Cap ETF IQ Chaikin U.S. Small Cap ETF
Management Fee	0.35%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.36%
Expense Waiver/Reimbursement	0.01%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.35%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ Chaikin U.S. Small Cap ETF | IQ Chaikin U.S. Small Cap ETF | USD ($)	36	115	201	455

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 106% of the average value of the portfolio. This rate excludes the value of the portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which has been developed by Nasdaq, Inc. (the “Index Provider”). The Underlying Index applies the Chaikin Power Gauge^®, a quantitative multi-factor model that seeks to identify securities that are expected to outperform peers, to select securities from the Nasdaq US 1500 Index (the “Parent Index”). The Parent Index is a modified capitalization-weighted index of U.S. small-capitalization securities. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the industrials sector, financials sector, and consumer goods sector. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $103 million to $5.5 billion.

The Underlying Index uses the Chaikin Power Gauge to select securities from the Parent Index. The Chaikin Power Gauge is a multi-factor model that evaluates four primary components:

• Value component (35% of rating), which uses factors such as long term debt to equity ratio, price to book ratio, and free cash flow to identify companies that are priced at a discount relative to peers;

• Growth component (20% of rating), which uses factors such as earnings growth, earnings trend, and earnings consistency to identify companies with higher growth potential;

• Technical component (15% of rating), which uses factors such as price trend, price trend rate of change, and volume trend to identify stocks with strong momentum and price appreciation; and

• Sentiment component (30% of rating), which uses factors such as earnings estimate trend, short interest, and industry relative strength to identify companies that are expected to outperform peers by informed Wall Street analysts and professionals.

The Chaikin Power Gauge seeks to identify each security’s current potential to outperform or underperform compared with peers.

To be selected for inclusion in the Underlying Index, a security must have a Chaikin Power Gauge ranking in the top 10% of the Parent Index, or a Chaikin Power Gauge ranking in the top 70% of the Parent Index and a price to sales ranking in the lowest quintile of the Parent Index.

The security types eligible for inclusion in the Underlying Index include common stocks and real estate investment trusts (REITs). The Underlying Index rebalances and reconstitutes annually and typically consists of 200 to 350 securities. As of June 30, 2018, the primary sectors within the Underlying Index are industrials and financials. The composition of the Underlying Index may change over time.

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of small-capitalization U.S. issuers.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Industrials Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. small-capitalization equity securities that are expected to outperform peers based upon a quantitative multi-factor model. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to equity securities that outperform their peers. Furthermore, an investment in a security that outperforms its peers may still lose money.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Small Capitalization Stock Risk

Stock prices of small-capitalization companies may be more volatile than those of larger companies and, therefore, the Fund’s share price may be more volatile than those of funds that invest a larger percentage of their assets in stocks issued by mid- or large-capitalization companies. Stock prices of small-capitalization companies are generally more vulnerable than those of mid- or large-capitalization companies to adverse business and economic developments. Securities of small-capitalization companies may be thinly traded, making it difficult for the Fund to buy and sell them. In addition, small-capitalization companies are typically less financially stable than larger, more established companies and may depend on a small number of essential personnel, making these companies more vulnerable to experiencing adverse effects due to the loss of personnel. Small capitalization companies also normally have less diverse product lines than those of mid- or large-capitalization companies and are more susceptible to adverse developments concerning their products.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.35% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

Label

Element

Value

IQ Chaikin U.S. Small Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Chaikin U.S. Small Cap ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the Nasdaq Chaikin Power US Small Cap Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 106% of the average value of the portfolio. This rate excludes the value of the portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

106.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which has been developed by Nasdaq, Inc. (the “Index Provider”). The Underlying Index applies the Chaikin Power Gauge^®, a quantitative multi-factor model that seeks to identify securities that are expected to outperform peers, to select securities from the Nasdaq US 1500 Index (the “Parent Index”). The Parent Index is a modified capitalization-weighted index of U.S. small-capitalization securities. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the industrials sector, financials sector, and consumer goods sector. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $103 million to $5.5 billion.

The Underlying Index uses the Chaikin Power Gauge to select securities from the Parent Index. The Chaikin Power Gauge is a multi-factor model that evaluates four primary components:

• Value component (35% of rating), which uses factors such as long term debt to equity ratio, price to book ratio, and free cash flow to identify companies that are priced at a discount relative to peers;

• Growth component (20% of rating), which uses factors such as earnings growth, earnings trend, and earnings consistency to identify companies with higher growth potential;

• Technical component (15% of rating), which uses factors such as price trend, price trend rate of change, and volume trend to identify stocks with strong momentum and price appreciation; and

• Sentiment component (30% of rating), which uses factors such as earnings estimate trend, short interest, and industry relative strength to identify companies that are expected to outperform peers by informed Wall Street analysts and professionals.

The Chaikin Power Gauge seeks to identify each security’s current potential to outperform or underperform compared with peers.

To be selected for inclusion in the Underlying Index, a security must have a Chaikin Power Gauge ranking in the top 10% of the Parent Index, or a Chaikin Power Gauge ranking in the top 70% of the Parent Index and a price to sales ranking in the lowest quintile of the Parent Index.

The security types eligible for inclusion in the Underlying Index include common stocks and real estate investment trusts (REITs). The Underlying Index rebalances and reconstitutes annually and typically consists of 200 to 350 securities. As of June 30, 2018, the primary sectors within the Underlying Index are industrials and financials. The composition of the Underlying Index may change over time.

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of small-capitalization U.S. issuers.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund generally will invest in all of the securities that comprise its Underlying Index in proportion to their weightings in the Underlying Index. The Fund has adopted a policy to invest, under normal circumstances, at least 80% of the value of its assets (net assets plus the amount of any borrowings for investment purposes) in securities of small-capitalization U.S. issuers.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Industrials Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. small-capitalization equity securities that are expected to outperform peers based upon a quantitative multi-factor model. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to equity securities that outperform their peers. Furthermore, an investment in a security that outperforms its peers may still lose money.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Portfolio Turnover Risk

The Fund’s strategy may frequently involve buying and selling portfolio securities to rebalance the Fund’s investment exposures. High portfolio turnover may result in the Fund paying higher levels of transaction costs and generating greater tax liabilities for shareholders. Portfolio turnover risk may cause the Fund’s performance to be less than you expect.

Small Capitalization Stock Risk

Stock prices of small-capitalization companies may be more volatile than those of larger companies and, therefore, the Fund’s share price may be more volatile than those of funds that invest a larger percentage of their assets in stocks issued by mid- or large-capitalization companies. Stock prices of small-capitalization companies are generally more vulnerable than those of mid- or large-capitalization companies to adverse business and economic developments. Securities of small-capitalization companies may be thinly traded, making it difficult for the Fund to buy and sell them. In addition, small-capitalization companies are typically less financially stable than larger, more established companies and may depend on a small number of essential personnel, making these companies more vulnerable to experiencing adverse effects due to the loss of personnel. Small capitalization companies also normally have less diverse product lines than those of mid- or large-capitalization companies and are more susceptible to adverse developments concerning their products.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

IQ Chaikin U.S. Small Cap ETF | IQ Chaikin U.S. Small Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.35%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.36%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.35%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 36

3 Years

rr_ExpenseExampleYear03

115

5 Years

rr_ExpenseExampleYear05

201

10 Years

rr_ExpenseExampleYear10

$ 455

[1] Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.35% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

IQ 50 Percent Hedged FTSE International ETF

IQ 50 Percent Hedged FTSE International ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the FTSE Developed ex North America 50% Hedged to USD Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ 50 Percent Hedged FTSE International ETF IQ 50 Percent Hedged FTSE International ETF
Management Fee	0.35%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Total Annual Fund Operating Expenses	0.36%
Expense Waiver/Reimbursement	0.16%	[1]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.20%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ 50 Percent Hedged FTSE International ETF | IQ 50 Percent Hedged FTSE International ETF | USD ($)	20	99	186	440

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 10% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by FTSE International Ltd. (“FTSE”). The Underlying Index is an equity benchmark of international stocks from developed markets, with approximately half of the currency exposure of the securities included in the Underlying Index “hedged” against the U.S. dollar on a monthly basis. The Underlying Index includes stocks from Europe, Australasia, and the Far East and as of June 30, 2018, consisted of the following 23 developed market countries: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Korea, Luxembourg, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, and the United Kingdom. The Underlying Index is a float-adjusted, market-capitalization-weighted index designed to measure equity market performance of developed international equity markets. The Underlying Index includes primarily large- and mid-capitalization companies. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financials sector, consumer goods sector and industrials sector. The composition of the Underlying Index may change over time.

The Underlying Index and the Fund’s net asset value (“NAV”) are denominated in U.S. dollars, while the component securities of the Underlying Index are generally denominated in foreign currencies. The Underlying Index is designed to reduce by approximately half the Fund’s exposure to fluctuations in the value of component currencies relative to the U.S. dollar. The Underlying Index applies a one month forward rate to approximately half of the value of the non-U.S. dollar denominated securities included in the Underlying Index to hedge against fluctuations for this portion of the Fund’s exposure to component securities relative to the U.S. dollar. The hedge is reset on a monthly basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

The Fund is expected to have lower returns than a similar fund that does not hedge any of its currency exposure when the component currencies are rising relative to the U.S. dollar. The Fund is expected to have higher returns than a similar unhedged fund when the component currencies are falling relative to the U.S. dollar. In order to replicate the hedging component of the Underlying Index, the Fund intends to enter into foreign currency forward contracts and futures contracts designed to offset approximately half of the Fund’s exposure to the component currencies. A foreign currency forward contract is a contract between two parties to buy or sell a specified amount of a specific currency in the future at an agreed upon exchange rate. The Fund’s exposure to foreign currency forward contracts is based on approximately half of the Fund’s aggregate exposure to the component currencies.

The Fund may also invest its assets in cash and cash equivalents, as well as in shares of other investment companies, options and swaps. To the extent that a Fund’s Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investment to approximately the same extent as its Underlying Index.

The Underlying Index is sponsored by an organization (the “Index Provider”) that is independent of the Fund and Advisor. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is FTSE International LTD., a widely known global index provider that currently manages and calculates more than 120,000 indices daily.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Currency Hedging Risk

The Fund uses various strategies to attempt to reduce the impact of changes in the value of a foreign currency against the U.S. dollar. These strategies may not be successful. Currency exchange rates can be very volatile and can change quickly and unpredictably. Therefore, the value of an investment in a Fund may also go up or down quickly and unpredictably and investors may lose money.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. The use of foreign currency forwards may result in currency exchange losses due to fluctuations in currency exchange rates or an imperfect correlation between portfolio holdings denominated in a particular currency and the forward contracts entered into by the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Industrial Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Cap Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The FTSE Developed ex North America Index Local Currency has replaced the FTSE Developed ex North America Index as the primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The FTSE Developed ex North America Index Local Currency is comprised of large and mid-cap stocks in developed markets, excluding the U.S. and Canada and represents the performance without any impact from foreign exchange fluctuations. The FTSE Developed ex North America Index is comprised of large- and mid-cap stocks in developed markets, excluding the U.S. and Canada.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers and/or expense reimbursements in effect. If such waivers or reimbursements were not in place, the Fund’s performance would be reduced. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -1.75%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	6.45%	Q3/2016
Lowest Return	–4.38%	Q1/2016

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ 50 Percent Hedged FTSE International ETF		1 Year	Since Inception	[1]	Inception Date
IQ 50 Percent Hedged FTSE International ETF		21.73%	6.24%		Jul. 22, 2015
IQ 50 Percent Hedged FTSE International ETF | Returns after taxes on distributions	[2]	20.92%	5.46%
IQ 50 Percent Hedged FTSE International ETF | Returns after taxes on distributions and sale of Fund shares	[2]	12.84%	4.65%
FTSE Developed ex North America 50% Hedged to USD Index		22.49%	7.00%
FTSE Developed ex North America Index Local Currency		18.31%	6.73%
FTSE Developed ex North America Index		26.76%	7.19%

[1] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.20% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

[1] The Fund commenced operations on July 22, 2015.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ 50 Percent Hedged FTSE International ETF

Risk/Return:

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Risk/Return [Heading]

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IQ 50 Percent Hedged FTSE International ETF

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the FTSE Developed ex North America 50% Hedged to USD Index (the “Underlying Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 10% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

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10.00%

Expense Exchange Traded Fund Commissions [Text]

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Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expense Example [Heading]

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Example.

Expense Example Narrative [Text Block]

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This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by FTSE International Ltd. (“FTSE”). The Underlying Index is an equity benchmark of international stocks from developed markets, with approximately half of the currency exposure of the securities included in the Underlying Index “hedged” against the U.S. dollar on a monthly basis. The Underlying Index includes stocks from Europe, Australasia, and the Far East and as of June 30, 2018, consisted of the following 23 developed market countries: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Korea, Luxembourg, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, and the United Kingdom. The Underlying Index is a float-adjusted, market-capitalization-weighted index designed to measure equity market performance of developed international equity markets. The Underlying Index includes primarily large- and mid-capitalization companies. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financials sector, consumer goods sector and industrials sector. The composition of the Underlying Index may change over time.

The Underlying Index and the Fund’s net asset value (“NAV”) are denominated in U.S. dollars, while the component securities of the Underlying Index are generally denominated in foreign currencies. The Underlying Index is designed to reduce by approximately half the Fund’s exposure to fluctuations in the value of component currencies relative to the U.S. dollar. The Underlying Index applies a one month forward rate to approximately half of the value of the non-U.S. dollar denominated securities included in the Underlying Index to hedge against fluctuations for this portion of the Fund’s exposure to component securities relative to the U.S. dollar. The hedge is reset on a monthly basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

The Fund is expected to have lower returns than a similar fund that does not hedge any of its currency exposure when the component currencies are rising relative to the U.S. dollar. The Fund is expected to have higher returns than a similar unhedged fund when the component currencies are falling relative to the U.S. dollar. In order to replicate the hedging component of the Underlying Index, the Fund intends to enter into foreign currency forward contracts and futures contracts designed to offset approximately half of the Fund’s exposure to the component currencies. A foreign currency forward contract is a contract between two parties to buy or sell a specified amount of a specific currency in the future at an agreed upon exchange rate. The Fund’s exposure to foreign currency forward contracts is based on approximately half of the Fund’s aggregate exposure to the component currencies.

The Fund may also invest its assets in cash and cash equivalents, as well as in shares of other investment companies, options and swaps. To the extent that a Fund’s Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investment to approximately the same extent as its Underlying Index.

The Underlying Index is sponsored by an organization (the “Index Provider”) that is independent of the Fund and Advisor. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is FTSE International LTD., a widely known global index provider that currently manages and calculates more than 120,000 indices daily.

Strategy Portfolio Concentration [Text]

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The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Currency Hedging Risk

The Fund uses various strategies to attempt to reduce the impact of changes in the value of a foreign currency against the U.S. dollar. These strategies may not be successful. Currency exchange rates can be very volatile and can change quickly and unpredictably. Therefore, the value of an investment in a Fund may also go up or down quickly and unpredictably and investors may lose money.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. The use of foreign currency forwards may result in currency exchange losses due to fluctuations in currency exchange rates or an imperfect correlation between portfolio holdings denominated in a particular currency and the forward contracts entered into by the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Industrial Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Cap Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

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As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The FTSE Developed ex North America Index Local Currency has replaced the FTSE Developed ex North America Index as the primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The FTSE Developed ex North America Index Local Currency is comprised of large and mid-cap stocks in developed markets, excluding the U.S. and Canada and represents the performance without any impact from foreign exchange fluctuations. The FTSE Developed ex North America Index is comprised of large- and mid-cap stocks in developed markets, excluding the U.S. and Canada.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers and/or expense reimbursements in effect. If such waivers or reimbursements were not in place, the Fund’s performance would be reduced. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of June 30, 2018 was -1.75%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	6.45%	Q3/2016
Lowest Return	–4.38%	Q1/2016

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(1.75%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2016

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.45%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2016

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.38%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ 50 Percent Hedged FTSE International ETF | FTSE Developed ex North America 50% Hedged to USD Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

22.49%

Since Inception

rr_AverageAnnualReturnSinceInception

7.00%

^[1]

IQ 50 Percent Hedged FTSE International ETF | FTSE Developed ex North America Index Local Currency

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.31%

Since Inception

rr_AverageAnnualReturnSinceInception

6.73%

^[1]

IQ 50 Percent Hedged FTSE International ETF | FTSE Developed ex North America Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

26.76%

Since Inception

rr_AverageAnnualReturnSinceInception

7.19%

^[1]

IQ 50 Percent Hedged FTSE International ETF | IQ 50 Percent Hedged FTSE International ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.35%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.36%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.16%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.20%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 20

3 Years

rr_ExpenseExampleYear03

99

5 Years

rr_ExpenseExampleYear05

186

10 Years

rr_ExpenseExampleYear10

$ 440

Annual Return 2016

rr_AnnualReturn2016

3.50%

Annual Return 2017

rr_AnnualReturn2017

21.73%

1 Year

rr_AverageAnnualReturnYear01

21.73%

Since Inception

rr_AverageAnnualReturnSinceInception

6.24%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 22, 2015

IQ 50 Percent Hedged FTSE International ETF | IQ 50 Percent Hedged FTSE International ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.92%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

5.46%

^[1],[3]

IQ 50 Percent Hedged FTSE International ETF | IQ 50 Percent Hedged FTSE International ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.84%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

4.65%

^[1],[3]

[1] The Fund commenced operations on July 22, 2015.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.20% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ 50 Percent Hedged FTSE Europe ETF

IQ 50 Percent Hedged FTSE Europe ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the FTSE Developed Europe 50% Hedged to USD Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ 50 Percent Hedged FTSE Europe ETF IQ 50 Percent Hedged FTSE Europe ETF
Management Fee	0.45%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Total Annual Fund Operating Expenses	0.46%
Expense Waiver/Reimbursement	0.16%	[1]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.30%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ 50 Percent Hedged FTSE Europe ETF | IQ 50 Percent Hedged FTSE Europe ETF | USD ($)	31	131	242	564

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 10% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by FTSE International Ltd. (“FTSE”). The Underlying Index is an equity benchmark for European countries, with approximately half of the currency exposure of the securities included in the Underlying Index “hedged” against the U.S. dollar on a monthly basis. As of June 30, 2018, the Underlying Index consisted of the following 16 countries: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. The Underlying Index is a float-adjusted, market-capitalization-weighted index designed to measure equity market performance of European equity markets. The Underlying Index includes primarily large- and mid-capitalization companies. The primary sectors within the Underlying Index currently include financials, consumer goods, and health care. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financials sector and consumer goods sector. The composition of the Underlying Index may change over time.

The Underlying Index and the Fund’s net asset value (“NAV”) are denominated in U.S. dollars, while the component securities of the Underlying Index are generally denominated in foreign currencies. The Underlying Index is designed to reduce by approximately half the Fund’s exposure to fluctuations in the value of component currencies relative to the U.S. dollar. The Underlying Index applies a one month forward rate to approximately half of the value of the non-U.S. dollar denominated securities included in the Underlying Index to hedge against fluctuations for this portion of the Fund’s exposure to component securities relative to the U.S. dollar. The hedge is reset on a monthly basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

The Fund is expected to have lower returns than a similar fund that does not hedge any of its currency exposure when the component currencies are rising relative to the U.S. dollar. The Fund is expected to have higher returns than a similar unhedged fund when the component currencies are falling relative to the U.S. dollar. In order to replicate the hedging component of the Underlying Index, the Fund intends to enter into foreign currency forward contracts and futures contracts designed to offset approximately half of the Fund’s exposure to the component currencies. A foreign currency forward contract is a contract between two parties to buy or sell a specified amount of a specific currency in the future at an agreed upon exchange rate. The Fund’s exposure to foreign currency forward contracts is based on approximately half of the Fund’s aggregate exposure to the component currencies.

The Fund may also invest its assets in cash and cash equivalents, as well as in shares of other investment companies, options and swaps. To the extent that a Fund’s Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investment to approximately the same extent as its Underlying Index.

The Underlying Index is sponsored by an organization (the “Index Provider”) that is independent of the Fund and Advisor. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is FTSE International Ltd., a widely known global index provider that currently manages and calculates more than 120,000 indices daily.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Currency Hedging Risk

The Fund uses various strategies to attempt to reduce the impact of changes in the value of a foreign currency against the U.S. dollar. These strategies may not be successful. Currency exchange rates can be very volatile and can change quickly and unpredictably. Therefore, the value of an investment in a Fund may also go up or down quickly and unpredictably and investors may lose money.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. The use of foreign currency forwards may result in currency exchange losses due to fluctuations in currency exchange rates or an imperfect correlation between portfolio holdings denominated in a particular currency and the forward contracts entered into by the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Europe

Because the Fund invests primarily in the securities of companies in Europe, the Fund’s performance is expected to be closely tied to social, political, and economic conditions within Europe and to be more volatile than the performance of more geographically diversified funds. Most developed countries in Western Europe are members of the European Union (EU), and many are also members of the European Monetary Union (EMU), which requires compliance with restrictions on inflation rates, deficits, and debt levels. A significant decline in the value of the euro, or the exit of a country from the EMU, may produce unpredictable effects on trade and commerce generally and could lead to increased volatility in financial markets worldwide. Unemployment in certain European nations is historically high and several countries face significant debt problems. These conditions can significantly affect every country in Europe.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The FTSE Developed Europe Index Hedged has replaced the FTSE Developed Europe Index as the Fund’s primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The FTSE Developed Europe Index Hedged is comprised of large- and mid-cap stocks in developed markets in Europe, and represents the performance without any impact from foreign exchange fluctuations. The FTSE Developed Europe Index is comprised of large- and mid-cap stocks in developed markets in Europe

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers and/or expense reimbursements in effect. If such waivers or reimbursements were not in place, the Fund’s performance would be reduced. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -1.31%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	6.75%	Q1/2017
Lowest Return	–3.54%	Q1/2016

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ 50 Percent Hedged FTSE Europe ETF		1 Year	Since Inception	[1]	Inception Date
IQ 50 Percent Hedged FTSE Europe ETF		20.04%	5.29%		Jul. 22, 2015
IQ 50 Percent Hedged FTSE Europe ETF | Returns after taxes on distributions	[2]	19.46%	4.04%
IQ 50 Percent Hedged FTSE Europe ETF | Returns after taxes on distributions and sale of Fund shares	[2]	11.87%	3.79%
FTSE Developed Europe 50% Hedged to USD Index		20.77%	6.12%
FTSE Developed Europe Index Hedged		15.55%	6.66%
FTSE Developed Europe Index		26.13%	5.47%

[1] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.30% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

[1] The Fund commenced operations on July 22, 2015.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ 50 Percent Hedged FTSE Europe ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ 50 Percent Hedged FTSE Europe ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the FTSE Developed Europe 50% Hedged to USD Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 10% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

10.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by FTSE International Ltd. (“FTSE”). The Underlying Index is an equity benchmark for European countries, with approximately half of the currency exposure of the securities included in the Underlying Index “hedged” against the U.S. dollar on a monthly basis. As of June 30, 2018, the Underlying Index consisted of the following 16 countries: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. The Underlying Index is a float-adjusted, market-capitalization-weighted index designed to measure equity market performance of European equity markets. The Underlying Index includes primarily large- and mid-capitalization companies. The primary sectors within the Underlying Index currently include financials, consumer goods, and health care. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the financials sector and consumer goods sector. The composition of the Underlying Index may change over time.

The Underlying Index and the Fund’s net asset value (“NAV”) are denominated in U.S. dollars, while the component securities of the Underlying Index are generally denominated in foreign currencies. The Underlying Index is designed to reduce by approximately half the Fund’s exposure to fluctuations in the value of component currencies relative to the U.S. dollar. The Underlying Index applies a one month forward rate to approximately half of the value of the non-U.S. dollar denominated securities included in the Underlying Index to hedge against fluctuations for this portion of the Fund’s exposure to component securities relative to the U.S. dollar. The hedge is reset on a monthly basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

The Fund is expected to have lower returns than a similar fund that does not hedge any of its currency exposure when the component currencies are rising relative to the U.S. dollar. The Fund is expected to have higher returns than a similar unhedged fund when the component currencies are falling relative to the U.S. dollar. In order to replicate the hedging component of the Underlying Index, the Fund intends to enter into foreign currency forward contracts and futures contracts designed to offset approximately half of the Fund’s exposure to the component currencies. A foreign currency forward contract is a contract between two parties to buy or sell a specified amount of a specific currency in the future at an agreed upon exchange rate. The Fund’s exposure to foreign currency forward contracts is based on approximately half of the Fund’s aggregate exposure to the component currencies.

The Fund may also invest its assets in cash and cash equivalents, as well as in shares of other investment companies, options and swaps. To the extent that a Fund’s Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investment to approximately the same extent as its Underlying Index.

The Underlying Index is sponsored by an organization (the “Index Provider”) that is independent of the Fund and Advisor. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is FTSE International Ltd., a widely known global index provider that currently manages and calculates more than 120,000 indices daily.

Strategy Portfolio Concentration [Text]

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The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Currency Hedging Risk

The Fund uses various strategies to attempt to reduce the impact of changes in the value of a foreign currency against the U.S. dollar. These strategies may not be successful. Currency exchange rates can be very volatile and can change quickly and unpredictably. Therefore, the value of an investment in a Fund may also go up or down quickly and unpredictably and investors may lose money.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. The use of foreign currency forwards may result in currency exchange losses due to fluctuations in currency exchange rates or an imperfect correlation between portfolio holdings denominated in a particular currency and the forward contracts entered into by the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Europe

Because the Fund invests primarily in the securities of companies in Europe, the Fund’s performance is expected to be closely tied to social, political, and economic conditions within Europe and to be more volatile than the performance of more geographically diversified funds. Most developed countries in Western Europe are members of the European Union (EU), and many are also members of the European Monetary Union (EMU), which requires compliance with restrictions on inflation rates, deficits, and debt levels. A significant decline in the value of the euro, or the exit of a country from the EMU, may produce unpredictable effects on trade and commerce generally and could lead to increased volatility in financial markets worldwide. Unemployment in certain European nations is historically high and several countries face significant debt problems. These conditions can significantly affect every country in Europe.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The FTSE Developed Europe Index Hedged has replaced the FTSE Developed Europe Index as the Fund’s primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The FTSE Developed Europe Index Hedged is comprised of large- and mid-cap stocks in developed markets in Europe, and represents the performance without any impact from foreign exchange fluctuations. The FTSE Developed Europe Index is comprised of large- and mid-cap stocks in developed markets in Europe

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers and/or expense reimbursements in effect. If such waivers or reimbursements were not in place, the Fund’s performance would be reduced. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

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1-888-474-7725

Performance Availability Website Address [Text]

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nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -1.31%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	6.75%	Q1/2017
Lowest Return	–3.54%	Q1/2016

Year to Date Return, Label

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The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(1.31%)

Highest Quarterly Return, Label

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Highest Return

Highest Quarterly Return, Date

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Mar. 31, 2017

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.75%

Lowest Quarterly Return, Label

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Lowest Return

Lowest Quarterly Return, Date

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Mar. 31, 2016

Lowest Quarterly Return

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(3.54%)

Performance Table Heading

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Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

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After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

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Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ 50 Percent Hedged FTSE Europe ETF | FTSE Developed Europe 50% Hedged to USD Index

Risk/Return:

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Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

20.77%

Since Inception

rr_AverageAnnualReturnSinceInception

6.12%

^[1]

IQ 50 Percent Hedged FTSE Europe ETF | FTSE Developed Europe Index Hedged

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.55%

Since Inception

rr_AverageAnnualReturnSinceInception

6.66%

^[1]

IQ 50 Percent Hedged FTSE Europe ETF | FTSE Developed Europe Index

Risk/Return:

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Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

26.13%

Since Inception

rr_AverageAnnualReturnSinceInception

5.47%

^[1]

IQ 50 Percent Hedged FTSE Europe ETF | IQ 50 Percent Hedged FTSE Europe ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

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0.45%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

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0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.46%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.16%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.30%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

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$ 31

3 Years

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131

5 Years

rr_ExpenseExampleYear05

242

10 Years

rr_ExpenseExampleYear10

$ 564

Annual Return 2016

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3.70%

Annual Return 2017

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20.04%

1 Year

rr_AverageAnnualReturnYear01

20.04%

Since Inception

rr_AverageAnnualReturnSinceInception

5.29%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 22, 2015

IQ 50 Percent Hedged FTSE Europe ETF | IQ 50 Percent Hedged FTSE Europe ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

19.46%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

4.04%

^[1],[3]

IQ 50 Percent Hedged FTSE Europe ETF | IQ 50 Percent Hedged FTSE Europe ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.87%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

3.79%

^[1],[3]

[1] The Fund commenced operations on July 22, 2015.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.30% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

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IQ 50 Percent Hedged FTSE Japan ETF

IQ 50 Percent Hedged FTSE Japan ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the FTSE Japan 50% Hedged to USD Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ 50 Percent Hedged FTSE Japan ETF IQ 50 Percent Hedged FTSE Japan ETF
Management Fee	0.45%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Total Annual Fund Operating Expenses	0.46%
Expense Waiver/Reimbursement	0.16%	[1]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.30%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ 50 Percent Hedged FTSE Japan ETF | IQ 50 Percent Hedged FTSE Japan ETF | USD ($)	31	131	242	564

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 6% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by FTSE International Ltd. (“FTSE”). The Underlying Index is an equity benchmark for Japan, with approximately half of the Underlying Index’s exposure to the Japanese yen “hedged” against the U.S. dollar on a monthly basis. The Underlying Index is a float-adjusted, market-capitalization-weighted index designed to measure equity market performance of the Japanese equity market. The Underlying Index includes primarily large- and mid-capitalization companies. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the industrials sector, financials sector, and consumer goods sector. The composition of the Underlying Index may change over time.

The Underlying Index and the Fund’s net asset value (“NAV”) are denominated in U.S. dollars, while the component securities of the Underlying Index are generally denominated in Japanese yen. The Underlying Index is designed to reduce by approximately half the Fund’s exposure to fluctuations in the value of the Japanese yen relative to the U.S. dollar. The Underlying Index applies a one month forward rate to approximately half of the value of the Japanese yen-denominated securities included in the Underlying Index to hedge against fluctuations for this portion of the Fund’s Japanese yen exposure relative to the U.S. dollar. The hedge is reset on a monthly basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

The Fund is expected to have lower returns than a similar fund that does not hedge any of its currency exposure when the Japanese yen is rising relative to the U.S. dollar. The Fund is expected to have higher returns than a similar unhedged fund when the Japanese yen is falling relative to the U.S. dollar. In order to replicate the hedging component of the Underlying Index, the Fund intends to enter into foreign currency forward contracts and futures contracts designed to offset approximately half of the Fund’s exposure to the component currencies. A foreign currency forward contract is a contract between two parties to buy or sell a specified amount of a specific currency in the future at an agreed upon exchange rate. The Fund’s exposure to foreign currency forward contracts is based on approximately half of the Fund’s aggregate exposure to the Japanese yen.

The Fund may also invest its assets in cash and cash equivalents, as well as in shares of other investment companies, options and swaps. To the extent that a Fund’s Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investment to approximately the same extent as its Underlying Index.

The Underlying Index is sponsored by an organization (the “Index Provider”) that is independent of the Fund and Advisor. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is FTSE, a widely known global index provider that currently manages and calculates more than 120,000 indices daily.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Currency Hedging Risk

The Fund uses various strategies to attempt to reduce the impact of changes in the value of a foreign currency against the U.S. dollar. These strategies may not be successful. Currency exchange rates can be very volatile and can change quickly and unpredictably. Therefore, the value of an investment in a Fund may also go up or down quickly and unpredictably and investors may lose money.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. The use of foreign currency forwards may result in currency exchange losses due to fluctuations in currency exchange rates or an imperfect correlation between portfolio holdings denominated in a particular currency and the forward contracts entered into by the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Japan

Because the Fund invests primarily in the securities of companies in Japan, the Fund’s performance is expected to be closely tied to social, political, and economic conditions within Japan and to be more volatile than the performance of more geographically diversified funds. The Japanese economy has only recently emerged from a prolonged economic downturn. Since the year 2000, Japan’s economic growth rate has remained relatively low.

The economy is characterized by government intervention and protectionism, an unstable financial services sector, and relatively high unemployment. Economic growth is heavily dependent on international trade, government support of the financial services sector and other troubled sectors, and consistent government policy. The United States is Japan’s largest single trading partner, but close to half of Japan’s trade is conducted with developing nations, almost all of which are in Southeast Asia. Slowdowns in the U.S. and China could have a negative impact on Japan. Exposure to China, in terms of both imports and exports, has been increasing in recent years.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Industrial Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Cap Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The FTSE Japan Index Hedged has replaced the FTSE Japan Index as the Fund’s primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The FTSE Japan Index Hedged is comprised of large- and mid-cap Japanese companies, and represents the performance without any impact from foreign exchange fluctuations. The FTSE Japan Index is comprised of large-and mid-cap Japanese companies that are constituents of the FTSE All-World Index.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers and/or expense reimbursements in effect. If such waivers or reimbursements were not in place, the Fund’s performance would be reduced. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

The Fund’s year-to-date total return as of June 30, 2018 was -2.56%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	8.87%	Q4/2017
Lowest Return	–10.08%	Q1/2016

Average Annual Total Returns as of December 31, 2017

Average Annual Total Returns - IQ 50 Percent Hedged FTSE Japan ETF		1 Year	Since Inception	[1]	Inception Date
IQ 50 Percent Hedged FTSE Japan ETF		23.29%	6.08%		Jul. 22, 2015
IQ 50 Percent Hedged FTSE Japan ETF | Returns after taxes on distributions	[2]	22.97%	5.74%
IQ 50 Percent Hedged FTSE Japan ETF | Returns after taxes on distributions and sale of Fund shares	[2]	13.70%	4.70%
FTSE Japan 50% Hedged to USD Index		23.84%	6.76%
FTSE Japan Index Hedged		22.58%	4.61%
FTSE Japan Index		25.03%	8.63%

[1] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.30% of the average daily net assets of the Fund. The agreement will remain in effective until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

[1] The Fund commenced operations on July 22, 2015.

[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

Label

Element

Value

IQ 50 Percent Hedged FTSE Japan ETF

Risk/Return:

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Risk/Return [Heading]

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IQ 50 Percent Hedged FTSE Japan ETF

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the FTSE Japan 50% Hedged to USD Index (the “Underlying Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 6% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

6.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expense Example [Heading]

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Example.

Expense Example Narrative [Text Block]

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This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by FTSE International Ltd. (“FTSE”). The Underlying Index is an equity benchmark for Japan, with approximately half of the Underlying Index’s exposure to the Japanese yen “hedged” against the U.S. dollar on a monthly basis. The Underlying Index is a float-adjusted, market-capitalization-weighted index designed to measure equity market performance of the Japanese equity market. The Underlying Index includes primarily large- and mid-capitalization companies. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the industrials sector, financials sector, and consumer goods sector. The composition of the Underlying Index may change over time.

The Underlying Index and the Fund’s net asset value (“NAV”) are denominated in U.S. dollars, while the component securities of the Underlying Index are generally denominated in Japanese yen. The Underlying Index is designed to reduce by approximately half the Fund’s exposure to fluctuations in the value of the Japanese yen relative to the U.S. dollar. The Underlying Index applies a one month forward rate to approximately half of the value of the Japanese yen-denominated securities included in the Underlying Index to hedge against fluctuations for this portion of the Fund’s Japanese yen exposure relative to the U.S. dollar. The hedge is reset on a monthly basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

The Fund is expected to have lower returns than a similar fund that does not hedge any of its currency exposure when the Japanese yen is rising relative to the U.S. dollar. The Fund is expected to have higher returns than a similar unhedged fund when the Japanese yen is falling relative to the U.S. dollar. In order to replicate the hedging component of the Underlying Index, the Fund intends to enter into foreign currency forward contracts and futures contracts designed to offset approximately half of the Fund’s exposure to the component currencies. A foreign currency forward contract is a contract between two parties to buy or sell a specified amount of a specific currency in the future at an agreed upon exchange rate. The Fund’s exposure to foreign currency forward contracts is based on approximately half of the Fund’s aggregate exposure to the Japanese yen.

The Fund may also invest its assets in cash and cash equivalents, as well as in shares of other investment companies, options and swaps. To the extent that a Fund’s Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investment to approximately the same extent as its Underlying Index.

The Underlying Index is sponsored by an organization (the “Index Provider”) that is independent of the Fund and Advisor. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is FTSE, a widely known global index provider that currently manages and calculates more than 120,000 indices daily.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities and other instruments included in its Underlying Index.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Funds.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore, the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Currency Hedging Risk

The Fund uses various strategies to attempt to reduce the impact of changes in the value of a foreign currency against the U.S. dollar. These strategies may not be successful. Currency exchange rates can be very volatile and can change quickly and unpredictably. Therefore, the value of an investment in a Fund may also go up or down quickly and unpredictably and investors may lose money.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. The use of foreign currency forwards may result in currency exchange losses due to fluctuations in currency exchange rates or an imperfect correlation between portfolio holdings denominated in a particular currency and the forward contracts entered into by the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Japan

Because the Fund invests primarily in the securities of companies in Japan, the Fund’s performance is expected to be closely tied to social, political, and economic conditions within Japan and to be more volatile than the performance of more geographically diversified funds. The Japanese economy has only recently emerged from a prolonged economic downturn. Since the year 2000, Japan’s economic growth rate has remained relatively low.

The economy is characterized by government intervention and protectionism, an unstable financial services sector, and relatively high unemployment. Economic growth is heavily dependent on international trade, government support of the financial services sector and other troubled sectors, and consistent government policy. The United States is Japan’s largest single trading partner, but close to half of Japan’s trade is conducted with developing nations, almost all of which are in Southeast Asia. Slowdowns in the U.S. and China could have a negative impact on Japan. Exposure to China, in terms of both imports and exports, has been increasing in recent years.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or in the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Industrial Sector Risk

The Fund may invest a significant portion of its assets in companies in the industrial sector. The industrial sector can be significantly affected by, among other things, worldwide economy growth, supply and demand for specific products and services, rapid technological developments, and government regulation.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Cap Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance. The FTSE Japan Index Hedged has replaced the FTSE Japan Index as the Fund’s primary benchmark index. The new index more closely aligns with the Fund’s investment strategies. The FTSE Japan Index Hedged is comprised of large- and mid-cap Japanese companies, and represents the performance without any impact from foreign exchange fluctuations. The FTSE Japan Index is comprised of large-and mid-cap Japanese companies that are constituents of the FTSE All-World Index.

All returns assume reinvestment of dividends and distributions. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers and/or expense reimbursements in effect. If such waivers or reimbursements were not in place, the Fund’s performance would be reduced. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart that follows shows the annual total returns of the Fund for a full calendar year. The table that follows the bar chart shows the Fund’s average annual total returns, both before and after taxes. The bar chart and table provide an indication of the risks of investing in the Fund by comparing the Fund’s performance from year to year and by showing how the Fund’s average annual returns for one calendar year compared with its underlying index and additional broad measures of market performance.

Performance Availability Phone [Text]

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1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund’s year-to-date total return as of June 30, 2018 was -2.56%.

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

	Return	Quarter/Year
Highest Return	8.87%	Q4/2017
Lowest Return	–10.08%	Q1/2016

Year to Date Return, Label

rr_YearToDateReturnLabel

The Fund’s year-to-date total return as of June 30, 2018 was

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(2.56%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2017

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

8.87%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2016

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(10.08%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns as of December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

IQ 50 Percent Hedged FTSE Japan ETF | FTSE Japan 50% Hedged to USD Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

23.84%

Since Inception

rr_AverageAnnualReturnSinceInception

6.76%

^[1]

IQ 50 Percent Hedged FTSE Japan ETF | FTSE Japan Index Hedged

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

22.58%

Since Inception

rr_AverageAnnualReturnSinceInception

4.61%

^[1]

IQ 50 Percent Hedged FTSE Japan ETF | FTSE Japan Index

Risk/Return:

rr_RiskReturnAbstract

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

25.03%

Since Inception

rr_AverageAnnualReturnSinceInception

8.63%

^[1]

IQ 50 Percent Hedged FTSE Japan ETF | IQ 50 Percent Hedged FTSE Japan ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.45%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.46%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.16%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.30%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 31

3 Years

rr_ExpenseExampleYear03

131

5 Years

rr_ExpenseExampleYear05

242

10 Years

rr_ExpenseExampleYear10

$ 564

Annual Return 2016

rr_AnnualReturn2016

0.14%

Annual Return 2017

rr_AnnualReturn2017

23.29%

1 Year

rr_AverageAnnualReturnYear01

23.29%

Since Inception

rr_AverageAnnualReturnSinceInception

6.08%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 22, 2015

IQ 50 Percent Hedged FTSE Japan ETF | IQ 50 Percent Hedged FTSE Japan ETF | Returns after taxes on distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

22.97%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

5.74%

^[1],[3]

IQ 50 Percent Hedged FTSE Japan ETF | IQ 50 Percent Hedged FTSE Japan ETF | Returns after taxes on distributions and sale of Fund shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.70%

^[3]

Since Inception

rr_AverageAnnualReturnSinceInception

4.70%

^[1],[3]

[1] The Fund commenced operations on July 22, 2015.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.30% of the average daily net assets of the Fund. The agreement will remain in effective until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

XML

IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF

IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF

Investment Objective

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the S&P U.S. Preferred Stock Low Volatility High Dividend Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF
Management Fee	0.35%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.36%
Expense Waiver/Reimbursement	0.01%	[2]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.35%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF | IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF | USD ($)	36	115

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by S&P Opco LLC (a subsidiary of S&P Dow Jones Indices LLC) (the “Index Provider”). The Underlying Index is comprised of preferred stocks and seeks to measures the performance of a select group of preferred stocks that have been selected in accordance with a rules-based methodology that seeks to identify securities that, in the aggregate, are expected to have lower volatility and higher dividend yield relative to the broader U.S. market for preferred stocks. The Underlying Index includes preferred stocks, including in the S&P U.S. Preferred Stock Index, which are preferred stocks with a market capitalization over $100 million that meet minimum price, liquidity, trading volume, maturity and other requirements set forth in the rules-based methodology determined by the Index Provider. The Underlying Index excludes certain issues of preferred stock, such as those that are issued by special ventures (e.g., toll roads or dam operators) or structured products and brand name products issued by financial institutions that are packaged securities linked to indices or other stocks.

Preferred stocks are a class of equity security with rights to a specified dividend that must be paid before any dividends can be paid to common stockholders. Preferred stock also takes precedence over common stock in the event of a company’s liquidation. Although preferred stocks represent a partial ownership interest in a company, preferred stocks generally do not carry voting rights and have economic characteristics similar to fixed-income securities. Preferred stocks generally are issued with a fixed par value and pay dividends based on a percentage of that par value at a fixed or variable rate. Preferred stocks often have a liquidation value that generally equals the original purchase price of the preferred stock at the date of issuance. The Underlying Index may include many different categories of preferred stock, such as floating, variable and fixed-rate preferreds, callable preferreds, convertible preferreds, cumulative and non-cumulative preferreds, trust preferreds or various other traditional and hybrid issues of preferred stock. The Underlying Index may include large-, mid- or small-capitalization companies.

Once the Underlying Index universe is defined based on the eligibility criteria, each preferred security is then ranked according to its volatility. Volatility is defined as the standard deviation of the preferred security’s daily price returns over the trailing 12 month period. Preferred securities in the eligible universe are then ranked in ascending order by realized volatility. The top 75% of the securities with the lowest volatility in the eligible universe form the low volatility universe. Preferred securities in the low volatility universe are then ranked by indicated dividend yield in descending order. The top 50% of the securities with the highest indicated yield is the low volatility universe are selected to form the Underlying Index. The Underlying Index constituents are weighted by indicated dividend yield.

There is no limit to the number of preferred securities issued by a single company included in the Underlying Index, however, a maximum weight of 5% is set per issuer. The aggregate weight of any issuer that exceeds 5% is capped on a pro rata basis to maximum of 5% of the Underlying Index, with any excess weight proportionally redistributed to all uncapped constituents.

The Underlying Index is rebalanced quarterly and typically consists of 70 to 120 securities.

To the extent the Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investments to approximately the same extent as the Underlying Index. A significant portion of the Underlying Index typically consists of securities in the financial sector.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Fund.”

Principal Risks

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Fund.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Dividend Paying Security Risk

Securities that pay high dividends as a group can fall out of favor with the market, causing such companies to underperform companies that do not pay high dividends. Also, changes in the dividend policies of the companies in the Underlying Index and the capital resources available for such companies’ dividend payments may affect the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Fixed-to-Floating Rate Securities Risk

Securities which include a floating or variable interest rate component can be less sensitive to interest rate changes than securities with fixed interest rates, but may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general.

Hybrid Securities Risk

Hybrid securities are subject to the risks of equity securities and risks of debt securities. The claims of holders of hybrid securities of an issuer are generally subordinated to those of holders of traditional debt securities in bankruptcy, and thus hybrid securities may be more volatile and subject to greater risk than traditional debt securities, and may in certain circumstances even be more volatile than traditional equity securities. At the same time, hybrid securities may not fully participate in gains of their issuer and thus potential returns of such securities are generally more limited than traditional equity securities, which would participate in such gains.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. preferred stocks that are expected to have lower volatility than the broad U.S. market for preferred stocks based on the factors and methodology of the Index Provider. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to preferred stocks have less volatility than the broad U.S. Market for preferred stocks.

Large-Capitalization Companies Risk

Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions. Large-capitalization companies may be more mature and subject to more limited growth potential compared with smaller capitalization companies. During different market cycles, the performance of large capitalization companies has trailed the overall performance of the broader securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Companies Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to the Underlying Index than it otherwise would at higher asset levels or the Fund could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Preferred Stock Risk

Preferred stock is subject to many of the risks associated with debt securities, including interest rate risk. In addition, preferred stocks may not pay dividends, an issuer may suspend payment of dividends on preferred stock at any time, and in certain situations an issuer may call or redeem its preferred stock or convert it to common stock. To the extent that the Fund invests a substantial portion of its assets in convertible preferred stocks, declining common stock values may also cause the value of the Fund’s investments to decline.

Small-Capitalization Companies Risk

Stock prices of small-capitalization companies may be more volatile than those of larger companies and, therefore, the Fund’s share price may be more volatile than those of funds that invest a larger percentage of their assets in stocks issued by mid- or large-capitalization companies. Stock prices of small-capitalization companies are generally more vulnerable than those of mid- or large-capitalization companies to adverse business and economic developments. Securities of small-capitalization companies may be thinly traded, making it difficult for the Fund to buy and sell them. In addition, small-capitalization companies are typically less financially stable than larger, more established companies and may depend on a small number of essential personnel, making these companies more vulnerable to experiencing adverse effects due to the loss of personnel. Small capitalization companies also normally have less diverse product lines than those of mid- or large-capitalization companies and are more susceptible to adverse developments concerning their products.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.35% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

Label

Element

Value

IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that correspond (before fees and expenses) generally to the price and yield performance of its underlying index, the S&P U.S. Preferred Stock Low Volatility High Dividend Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by S&P Opco LLC (a subsidiary of S&P Dow Jones Indices LLC) (the “Index Provider”). The Underlying Index is comprised of preferred stocks and seeks to measures the performance of a select group of preferred stocks that have been selected in accordance with a rules-based methodology that seeks to identify securities that, in the aggregate, are expected to have lower volatility and higher dividend yield relative to the broader U.S. market for preferred stocks. The Underlying Index includes preferred stocks, including in the S&P U.S. Preferred Stock Index, which are preferred stocks with a market capitalization over $100 million that meet minimum price, liquidity, trading volume, maturity and other requirements set forth in the rules-based methodology determined by the Index Provider. The Underlying Index excludes certain issues of preferred stock, such as those that are issued by special ventures (e.g., toll roads or dam operators) or structured products and brand name products issued by financial institutions that are packaged securities linked to indices or other stocks.

Preferred stocks are a class of equity security with rights to a specified dividend that must be paid before any dividends can be paid to common stockholders. Preferred stock also takes precedence over common stock in the event of a company’s liquidation. Although preferred stocks represent a partial ownership interest in a company, preferred stocks generally do not carry voting rights and have economic characteristics similar to fixed-income securities. Preferred stocks generally are issued with a fixed par value and pay dividends based on a percentage of that par value at a fixed or variable rate. Preferred stocks often have a liquidation value that generally equals the original purchase price of the preferred stock at the date of issuance. The Underlying Index may include many different categories of preferred stock, such as floating, variable and fixed-rate preferreds, callable preferreds, convertible preferreds, cumulative and non-cumulative preferreds, trust preferreds or various other traditional and hybrid issues of preferred stock. The Underlying Index may include large-, mid- or small-capitalization companies.

Once the Underlying Index universe is defined based on the eligibility criteria, each preferred security is then ranked according to its volatility. Volatility is defined as the standard deviation of the preferred security’s daily price returns over the trailing 12 month period. Preferred securities in the eligible universe are then ranked in ascending order by realized volatility. The top 75% of the securities with the lowest volatility in the eligible universe form the low volatility universe. Preferred securities in the low volatility universe are then ranked by indicated dividend yield in descending order. The top 50% of the securities with the highest indicated yield is the low volatility universe are selected to form the Underlying Index. The Underlying Index constituents are weighted by indicated dividend yield.

There is no limit to the number of preferred securities issued by a single company included in the Underlying Index, however, a maximum weight of 5% is set per issuer. The aggregate weight of any issuer that exceeds 5% is capped on a pro rata basis to maximum of 5% of the Underlying Index, with any excess weight proportionally redistributed to all uncapped constituents.

The Underlying Index is rebalanced quarterly and typically consists of 70 to 120 securities.

To the extent the Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investments to approximately the same extent as the Underlying Index. A significant portion of the Underlying Index typically consists of securities in the financial sector.

For additional information about the Fund’s principal investment strategies, see “Description of the Principal Strategies of the Fund.”

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by S&P Opco LLC (a subsidiary of S&P Dow Jones Indices LLC) (the “Index Provider”). The Underlying Index is comprised of preferred stocks and seeks to measures the performance of a select group of preferred stocks that have been selected in accordance with a rules-based methodology that seeks to identify securities that, in the aggregate, are expected to have lower volatility and higher dividend yield relative to the broader U.S. market for preferred stocks. The Underlying Index includes preferred stocks, including in the S&P U.S. Preferred Stock Index, which are preferred stocks with a market capitalization over $100 million that meet minimum price, liquidity, trading volume, maturity and other requirements set forth in the rules-based methodology determined by the Index Provider. The Underlying Index excludes certain issues of preferred stock, such as those that are issued by special ventures (e.g., toll roads or dam operators) or structured products and brand name products issued by financial institutions that are packaged securities linked to indices or other stocks.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk and the Fund does not represent a complete investment program. As with all investments, you may lose money in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Therefore, you should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Fund.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Dividend Paying Security Risk

Securities that pay high dividends as a group can fall out of favor with the market, causing such companies to underperform companies that do not pay high dividends. Also, changes in the dividend policies of the companies in the Underlying Index and the capital resources available for such companies’ dividend payments may affect the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risk inherent in the portfolio manager’s ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Fixed-to-Floating Rate Securities Risk

Securities which include a floating or variable interest rate component can be less sensitive to interest rate changes than securities with fixed interest rates, but may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general.

Hybrid Securities Risk

Hybrid securities are subject to the risks of equity securities and risks of debt securities. The claims of holders of hybrid securities of an issuer are generally subordinated to those of holders of traditional debt securities in bankruptcy, and thus hybrid securities may be more volatile and subject to greater risk than traditional debt securities, and may in certain circumstances even be more volatile than traditional equity securities. At the same time, hybrid securities may not fully participate in gains of their issuer and thus potential returns of such securities are generally more limited than traditional equity securities, which would participate in such gains.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the sector the Underlying Index seeks to track due to changes that are reflected in the sector more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund’s portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. preferred stocks that are expected to have lower volatility than the broad U.S. market for preferred stocks based on the factors and methodology of the Index Provider. There is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to preferred stocks have less volatility than the broad U.S. Market for preferred stocks.

Large-Capitalization Companies Risk

Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions. Large-capitalization companies may be more mature and subject to more limited growth potential compared with smaller capitalization companies. During different market cycles, the performance of large capitalization companies has trailed the overall performance of the broader securities markets.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Companies Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to the Underlying Index than it otherwise would at higher asset levels or the Fund could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Preferred Stock Risk

Preferred stock is subject to many of the risks associated with debt securities, including interest rate risk. In addition, preferred stocks may not pay dividends, an issuer may suspend payment of dividends on preferred stock at any time, and in certain situations an issuer may call or redeem its preferred stock or convert it to common stock. To the extent that the Fund invests a substantial portion of its assets in convertible preferred stocks, declining common stock values may also cause the value of the Fund’s investments to decline.

Small-Capitalization Companies Risk

Stock prices of small-capitalization companies may be more volatile than those of larger companies and, therefore, the Fund’s share price may be more volatile than those of funds that invest a larger percentage of their assets in stocks issued by mid- or large-capitalization companies. Stock prices of small-capitalization companies are generally more vulnerable than those of mid- or large-capitalization companies to adverse business and economic developments. Securities of small-capitalization companies may be thinly traded, making it difficult for the Fund to buy and sell them. In addition, small-capitalization companies are typically less financially stable than larger, more established companies and may depend on a small number of essential personnel, making these companies more vulnerable to experiencing adverse effects due to the loss of personnel. Small capitalization companies also normally have less diverse product lines than those of mid- or large-capitalization companies and are more susceptible to adverse developments concerning their products.

Tracking Error Risk

Although the Fund attempts to track the performance of its Underlying Index, the Fund may not be able to duplicate its exact composition or return for any number of reasons.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF | IQ S&P U.S. Preferred Stock Low Volatility High Dividend ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.35%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.36%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.35%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 36

3 Years

rr_ExpenseExampleYear03

$ 115

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

[2] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.35% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019 unless terminated by the Board of Trustees of the Fund.

XML

IQ S&P High Yield Low Volatility Bond ETF

IQ S&P High Yield Low Volatility Bond ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the S&P U.S. High Yield Low Volatility Corporate Bond Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ S&P High Yield Low Volatility Bond ETF IQ S&P High Yield Low Volatility Bond ETF
Management Fee	0.40%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%
Total Annual Fund Operating Expenses	0.41%
Expense Waiver/Reimbursement	0.01%	[1]
Total Annual Fund Operating Expenses After Waiver/Reimbursement	0.40%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
IQ S&P High Yield Low Volatility Bond ETF | IQ S&P High Yield Low Volatility Bond ETF | USD ($)	41	131	229	517

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 75% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the S&P U.S. High Yield Low Volatility Corporate Bond Index (the “Underlying Index”), which has been developed by S&P Opco LLC (a subsidiary of S&P Dow Jones Indices LLC) (the “Index Provider”). The Underlying Index is comprised of U.S. dollar denominated high yield corporate bonds that have been selected in accordance with a rules-based methodology that seeks to identify securities that, in the aggregate, are expected to have lower volatility relative to the broad U.S. dollar denominated high yield corporate bond market. The Underlying Index is a market value weighted index comprised of bonds included in the S&P U.S. High Yield Corporate Bond Index that meet liquidity and risk-based selection criteria.

The Underlying Index is comprised of U.S. dollar denominated high yield corporate bonds of issuers domiciled in the U.S. and foreign countries classified as developed markets by the Index Provider. To be eligible for inclusion in the Underlying Index, bonds must meet the following criteria: (i) pay fixed-rate coupons; (ii) have at least $400 million of outstanding face value; (iii) have a remaining maturity of at least one month as of the rebalancing date; and (v) have an average rating below investment grade by Moody’s Investors Service, Standard & Poor’s, and /or Fitch Ratings. Eligible U.S. dollar denominated high yield corporate bonds are further screened for liquidity considerations based on their bond type, size, spread, duration and time since issuance.

Once the Underlying Index universe is defined based on the eligibility criteria, each bond is then ranked according to its marginal contribution to risk (MCR). MCR is a measurement of the amount of risk a security contributes to a portfolio of securities. MCR is calculated using a bond’s duration and the difference between the bond’s spread (the difference between the option-adjusted yield of the bond and the yield of a U.S. treasury security with a similar maturity) and a weighted average spread of the bonds in the index universe. In general, a bond with a higher MCR will add more credit risk to the overall portfolio than a bond with a lower MCR.

After ranking all eligible bonds based upon their MCR, the Underlying Index selects for inclusion the 50 percent of bonds measured to have the least credit risk based on their MCR. A bond included in the Underlying Index must remain in the 60 percent of bonds measured to have the least credit risk based on its MCR to remain in the Underlying Index. The Underlying Index seeks to construct a portfolio of securities that has lower volatility than the U.S. dollar-denominated high yield bond universe through the selection of lower-risk bonds based on MCR. Once the bonds are selected for inclusion in the Underlying Index, they are weighted by market value.

The Underlying Index is rebalanced monthly and typically consists of 400 to 500 securities.

The Fund uses a “Representative Sampling” strategy in seeking to track the performance of the Underlying Index. A fund using a Representative Sampling strategy generally will invest in a sample of securities that collectively has an investment profile similar to that of the Underlying Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability, duration, maturity, credit ratings and yield) and liquidity measures similar to those of the Underlying Index. The Fund may also invest in credit default swaps and futures contracts to seek to track the Underlying Index.

To the extent the Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investments to approximately the same extent as the Underlying Index. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the consumer goods sector.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Fund.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Fixed income securities most frequently trade in institutional round lot size transactions. Until the Fund grows significantly in size, the Fund expects to purchase a significant number of bonds in amounts less than the institutional round lot size, which are frequently referred to as “odd” lots. Odd lot size positions may have more price volatility than institutional round lot size positions, and investments in odd lot size positions may result in greater tracking error between the Fund and the Underlying Index. The Fund uses a third-party pricing service to value bond holdings and the pricing service values bonds assuming orderly transactions of an institutional round lot size.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Call Risk

During periods of falling interest rates, an issuer of a callable bond held by the Fund may “call” or repay the security before its stated maturity, and the Fund may have to reinvest the proceeds at lower interest rates, resulting in a decline in the Fund’s income.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Credit Risk

Debt issuers and other counterparties may not honor their obligations or may have their debt downgraded by ratings agencies. The financial condition of an issuer of a debt security or other instrument may cause such issuer to default, become unable to pay interest or principal due or otherwise fail to honor its obligations or cause such issuer to be perceived (whether by market participants, rating agencies, pricing services or otherwise) as being in such situations.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivative strategies may expose the Fund to greater risk and often involve leverage, which may exaggerate a loss, potentially causing the Fund to lose more money than it would have lost had it invested in the underlying instrument. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) on a derivative transaction will be unable to honor its contractual obligations to the Fund. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is intended to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free. Due to fluctuations in the price of the underlying security, the Fund may not be able to profitably exercise an option and may lose its entire investment in an option. Futures may be more volatile than direct investments in the instrument underlying the contract, and may not correlate perfectly to the underlying instrument. Futures and other derivatives also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used.

Extension Risk

During periods of rising interest rates, certain debt obligations may be paid off substantially more slowly than originally anticipated and the value of those securities may fall sharply, resulting in a decline in the Fund’s income and potentially in the value of the Fund’s investments.

Foreign Securities Risk

Investments in foreign securities may be riskier than investments in U.S. securities. Differences between U.S. and foreign regulatory regimes and securities markets, including less stringent investor protections and disclosure standards of some foreign markets, less liquid trading markets and political and economic developments in foreign countries, may affect the value of the Fund’s investments in foreign securities.

High Yield Securities Risk

High yield securities generally offer a higher current yield than the yield available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.”

Income Risk

The Fund’s income may decline when interest rates fall. This decline can occur because the Fund may subsequently invest in lower-yielding bonds when bonds in its portfolio mature, bonds in the Underlying Index are substituted or the Fund otherwise needs to purchase additional bonds.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Interest Rate Risk

An increase in interest rates may cause the value of securities held by the Fund to decline. Interest rates in the United States are near historic lows, which may increase the Fund’s exposure to risks associated with rising interest rates. Interest rates may rise significantly and/or rapidly. A Fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration. Rising interest rates may lead to increased volatility and decreased liquidity in the bond markets, making it more difficult for the Fund to sell its bond holdings at a time when the Fund might wish to sell.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. dollar-denominated high yield corporate bonds that are measured to have less credit risk based on their Marginal Contribution to Risk. As with any measure of a bond’s credit risk, Marginal Contribution to Risk may fail to accurately reflect the credit risk of an individual bond. In addition, Marginal Contribution to Risk is not predictive of the price performance of fixed income securities. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to U.S. dollar denominated high yield corporate bonds with lower credit risk.

Liquidity Risk

Liquidity risk exists when particular investments are difficult to purchase or sell. This can reduce the Fund’s returns because the Fund may be unable to transact at advantageous times or prices. Decreased liquidity in the bond markets also may make it more difficult to value some or all of the Fund’s bond holdings.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Tracking Error Risk

Tracking error is the divergence of the Fund’s performance from that of the Underlying Index. Tracking error may occur because of differences between the securities and other instruments held in the Fund’s portfolio and those included in the Underlying Index, pricing differences, transaction costs, the Fund’s holding of uninvested cash, differences in timing of the accrual of distributions, tax gains or losses, changes to the Underlying Index or the cost of complying with various or existing regulatory requirements, This risk may be heightened during times of increased market volatility or either unusual market conditions. Tracking error also may result because the fund incurs fees and expenses while the Underlying Index does not. Funds that track indices with significant weight in high yield securities may experience higher tracking error than other index ETFs that do not track such indices.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Performance Information

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

[1] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.40% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

XML

Label

Element

Value

IQ S&P High Yield Low Volatility Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ S&P High Yield Low Volatility Bond ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the S&P U.S. High Yield Low Volatility Corporate Bond Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 75% of the average value of its portfolio. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s Shares.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

75.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the S&P U.S. High Yield Low Volatility Corporate Bond Index (the “Underlying Index”), which has been developed by S&P Opco LLC (a subsidiary of S&P Dow Jones Indices LLC) (the “Index Provider”). The Underlying Index is comprised of U.S. dollar denominated high yield corporate bonds that have been selected in accordance with a rules-based methodology that seeks to identify securities that, in the aggregate, are expected to have lower volatility relative to the broad U.S. dollar denominated high yield corporate bond market. The Underlying Index is a market value weighted index comprised of bonds included in the S&P U.S. High Yield Corporate Bond Index that meet liquidity and risk-based selection criteria.

The Underlying Index is comprised of U.S. dollar denominated high yield corporate bonds of issuers domiciled in the U.S. and foreign countries classified as developed markets by the Index Provider. To be eligible for inclusion in the Underlying Index, bonds must meet the following criteria: (i) pay fixed-rate coupons; (ii) have at least $400 million of outstanding face value; (iii) have a remaining maturity of at least one month as of the rebalancing date; and (v) have an average rating below investment grade by Moody’s Investors Service, Standard & Poor’s, and /or Fitch Ratings. Eligible U.S. dollar denominated high yield corporate bonds are further screened for liquidity considerations based on their bond type, size, spread, duration and time since issuance.

Once the Underlying Index universe is defined based on the eligibility criteria, each bond is then ranked according to its marginal contribution to risk (MCR). MCR is a measurement of the amount of risk a security contributes to a portfolio of securities. MCR is calculated using a bond’s duration and the difference between the bond’s spread (the difference between the option-adjusted yield of the bond and the yield of a U.S. treasury security with a similar maturity) and a weighted average spread of the bonds in the index universe. In general, a bond with a higher MCR will add more credit risk to the overall portfolio than a bond with a lower MCR.

After ranking all eligible bonds based upon their MCR, the Underlying Index selects for inclusion the 50 percent of bonds measured to have the least credit risk based on their MCR. A bond included in the Underlying Index must remain in the 60 percent of bonds measured to have the least credit risk based on its MCR to remain in the Underlying Index. The Underlying Index seeks to construct a portfolio of securities that has lower volatility than the U.S. dollar-denominated high yield bond universe through the selection of lower-risk bonds based on MCR. Once the bonds are selected for inclusion in the Underlying Index, they are weighted by market value.

The Underlying Index is rebalanced monthly and typically consists of 400 to 500 securities.

The Fund uses a “Representative Sampling” strategy in seeking to track the performance of the Underlying Index. A fund using a Representative Sampling strategy generally will invest in a sample of securities that collectively has an investment profile similar to that of the Underlying Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability, duration, maturity, credit ratings and yield) and liquidity measures similar to those of the Underlying Index. The Fund may also invest in credit default swaps and futures contracts to seek to track the Underlying Index.

To the extent the Underlying Index concentrates (i.e., holds 25% or more of its total assets) in the securities of a particular industry or group of industries, the Fund will concentrate its investments to approximately the same extent as the Underlying Index. As of June 30, 2018, a significant portion of the Underlying Index is represented by securities of companies in the consumer goods sector.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund. A more complete discussion of Principal Risks is included under “Description of the Principal Risks of the Fund.”

Asset Class Risk

Securities in the Underlying Index or in the Fund’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Fixed income securities most frequently trade in institutional round lot size transactions. Until the Fund grows significantly in size, the Fund expects to purchase a significant number of bonds in amounts less than the institutional round lot size, which are frequently referred to as “odd” lots. Odd lot size positions may have more price volatility than institutional round lot size positions, and investments in odd lot size positions may result in greater tracking error between the Fund and the Underlying Index. The Fund uses a third-party pricing service to value bond holdings and the pricing service values bonds assuming orderly transactions of an institutional round lot size.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Call Risk

During periods of falling interest rates, an issuer of a callable bond held by the Fund may “call” or repay the security before its stated maturity, and the Fund may have to reinvest the proceeds at lower interest rates, resulting in a decline in the Fund’s income.

Consumer Goods Sector Risk

The Fund may invest a significant portion of its assets in companies in the consumer goods sector. The consumer goods sector of the economy can be significantly affected by, among other things, economic growth, worldwide demand and consumers’ disposable income levels and propensity to spend.

Credit Risk

Debt issuers and other counterparties may not honor their obligations or may have their debt downgraded by ratings agencies. The financial condition of an issuer of a debt security or other instrument may cause such issuer to default, become unable to pay interest or principal due or otherwise fail to honor its obligations or cause such issuer to be perceived (whether by market participants, rating agencies, pricing services or otherwise) as being in such situations.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivative strategies may expose the Fund to greater risk and often involve leverage, which may exaggerate a loss, potentially causing the Fund to lose more money than it would have lost had it invested in the underlying instrument. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) on a derivative transaction will be unable to honor its contractual obligations to the Fund. Swaps are particularly subject to counterparty credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is intended to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free. Due to fluctuations in the price of the underlying security, the Fund may not be able to profitably exercise an option and may lose its entire investment in an option. Futures may be more volatile than direct investments in the instrument underlying the contract, and may not correlate perfectly to the underlying instrument. Futures and other derivatives also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used.

Extension Risk

During periods of rising interest rates, certain debt obligations may be paid off substantially more slowly than originally anticipated and the value of those securities may fall sharply, resulting in a decline in the Fund’s income and potentially in the value of the Fund’s investments.

Foreign Securities Risk

Investments in foreign securities may be riskier than investments in U.S. securities. Differences between U.S. and foreign regulatory regimes and securities markets, including less stringent investor protections and disclosure standards of some foreign markets, less liquid trading markets and political and economic developments in foreign countries, may affect the value of the Fund’s investments in foreign securities.

High Yield Securities Risk

High yield securities generally offer a higher current yield than the yield available from higher grade issues, but typically involve greater risk. Securities rated below investment grade are commonly referred to as “junk bonds.”

Income Risk

The Fund’s income may decline when interest rates fall. This decline can occur because the Fund may subsequently invest in lower-yielding bonds when bonds in its portfolio mature, bonds in the Underlying Index are substituted or the Fund otherwise needs to purchase additional bonds.

Index Risk

The Underlying Index may not be successful in replicating the performance of its target strategies.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Interest Rate Risk

An increase in interest rates may cause the value of securities held by the Fund to decline. Interest rates in the United States are near historic lows, which may increase the Fund’s exposure to risks associated with rising interest rates. Interest rates may rise significantly and/or rapidly. A Fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration. Rising interest rates may lead to increased volatility and decreased liquidity in the bond markets, making it more difficult for the Fund to sell its bond holdings at a time when the Fund might wish to sell.

Investment Style Risk

The Underlying Index seeks to provide exposure to U.S. dollar-denominated high yield corporate bonds that are measured to have less credit risk based on their Marginal Contribution to Risk. As with any measure of a bond’s credit risk, Marginal Contribution to Risk may fail to accurately reflect the credit risk of an individual bond. In addition, Marginal Contribution to Risk is not predictive of the price performance of fixed income securities. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to U.S. dollar denominated high yield corporate bonds with lower credit risk.

Liquidity Risk

Liquidity risk exists when particular investments are difficult to purchase or sell. This can reduce the Fund’s returns because the Fund may be unable to transact at advantageous times or prices. Decreased liquidity in the bond markets also may make it more difficult to value some or all of the Fund’s bond holdings.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from the Underlying Index.

Tracking Error Risk

Tracking error is the divergence of the Fund’s performance from that of the Underlying Index. Tracking error may occur because of differences between the securities and other instruments held in the Fund’s portfolio and those included in the Underlying Index, pricing differences, transaction costs, the Fund’s holding of uninvested cash, differences in timing of the accrual of distributions, tax gains or losses, changes to the Underlying Index or the cost of complying with various or existing regulatory requirements, This risk may be heightened during times of increased market volatility or either unusual market conditions. Tracking error also may result because the fund incurs fees and expenses while the Underlying Index does not. Funds that track indices with significant weight in high yield securities may experience higher tracking error than other index ETFs that do not track such indices.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information. Fund performance current to the most recent month-end is available by calling 1-888-474-7725 or by visiting nylinvestments.com/etfs.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not completed a full calendar year of operations and therefore does not report its performance information.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-474-7725

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

nylinvestments.com/etfs

IQ S&P High Yield Low Volatility Bond ETF | IQ S&P High Yield Low Volatility Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.41%

Expense Waiver/Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses After Waiver/Reimbursement

rr_NetExpensesOverAssets

0.40%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

August 31, 2019

1 Year

rr_ExpenseExampleYear01

$ 41

3 Years

rr_ExpenseExampleYear03

131

5 Years

rr_ExpenseExampleYear05

229

10 Years

rr_ExpenseExampleYear10

$ 517

[1] IndexIQ Advisors LLC has contractually agreed to waive or reduce its management fee and/or reimburse expenses of the Fund in an amount that limits "Total Annual Fund Operating Expenses" (exclusive of interest, taxes, brokerage fees and commissions, dividends paid on short sales, acquired fund fees and expenses, and extraordinary expenses) to not more than 0.40% of the average daily net assets of the Fund. The agreement will remain in effect until August 31, 2019, unless terminated by the Board of Trustees of the Fund.

XML

IQ Candriam SRI US Equity ETF

IQ Candriam SRI US Equity ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI US Equity Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Candriam SRI US Equity ETF IQ Candriam SRI US Equity ETF
Management Fee	0.35%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.36%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Candriam SRI US Equity ETF | IQ Candriam SRI US Equity ETF | USD ($)	37	116

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk-return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $4.1 billion to $896.4 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the United States. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 336 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund ’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Candriam SRI US Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Candriam SRI US Equity ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI US Equity Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk-return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $4.1 billion to $896.4 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the United States. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 336 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund ’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, and Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Candriam SRI US Equity ETF | IQ Candriam SRI US Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.35%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.36%

1 Year

rr_ExpenseExampleYear01

$ 37

3 Years

rr_ExpenseExampleYear03

$ 116

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

IQ Candriam SRI World Equity ETF

IQ Candriam SRI World Equity ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI World Equity Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Candriam SRI World Equity ETF IQ Candriam SRI World Equity ETF
Management Fee	0.40%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.41%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Candriam SRI World Equity ETF | IQ Candriam SRI World Equity ETF | USD ($)	42	132

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $2.1 billion to $896.4 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following 23 U.S. and international developed market countries: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom, and the United States. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 764 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting. 

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Candriam SRI World Equity ETF

Risk/Return:

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Risk/Return [Heading]

rr_RiskReturnHeading

IQ Candriam SRI World Equity ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI World Equity Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $2.1 billion to $896.4 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following 23 U.S. and international developed market countries: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom, and the United States. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 764 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting. 

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in Secondary Markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Candriam SRI World Equity ETF | IQ Candriam SRI World Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.41%

1 Year

rr_ExpenseExampleYear01

$ 42

3 Years

rr_ExpenseExampleYear03

$ 132

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

IQ Candriam SRI International Equity ETF

IQ Candriam SRI International Equity ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI International Equity Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Candriam SRI International Equity ETF IQ Candriam SRI International Equity ETF
Management Fee	0.40%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.41%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Candriam SRI International Equity ETF | IQ Candriam SRI International Equity ETF | USD ($)	42	132

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $2.1 billion to $232.9 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following 21 international developed market country indexes: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, South Africa, Sweden, Switzerland, the United Kingdom, and the United States. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 453 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Candriam SRI International Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Candriam SRI International Equity ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI International Equity Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $2.1 billion to $232.9 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following 21 international developed market country indexes: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, South Africa, Sweden, Switzerland, the United Kingdom, and the United States. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 453 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous Secondary Market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Candriam SRI International Equity ETF | IQ Candriam SRI International Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.41%

1 Year

rr_ExpenseExampleYear01

$ 42

3 Years

rr_ExpenseExampleYear03

$ 132

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

IQ Candriam SRI European Equity ETF

IQ Candriam SRI European Equity ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI European Equity Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Candriam SRI European Equity ETF IQ Candriam SRI European Equity ETF
Management Fee	0.45%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.46%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Candriam SRI European Equity ETF | IQ Candriam SRI European Equity ETF | USD ($)	47	148

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $3.5 billion to $232.9 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following 15 European developed market country indexes: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 274 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Europe

Because the Fund invests primarily in the securities of companies in Europe, the Fund’s performance is expected to be closely tied to social, political, and economic conditions within Europe and to be more volatile than the performance of more geographically diversified funds. Most developed countries in Western Europe are members of the European Union (EU), and many are also members of the European Monetary Union (EMU), which requires compliance with restrictions on inflation rates, deficits, and debt levels. A significant decline in the value of the euro, or the exit of a country from the EMU, may produce unpredictable effects on trade and commerce generally and could lead to increased volatility in financial markets worldwide. Unemployment in certain European nations is historically high and several countries face significant debt problems. These conditions can significantly affect every country in Europe.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous secondary market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Candriam SRI European Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Candriam SRI European Equity ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI European Equity Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $3.5 billion to $232.9 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following 15 European developed market country indexes: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 274 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Europe

Because the Fund invests primarily in the securities of companies in Europe, the Fund’s performance is expected to be closely tied to social, political, and economic conditions within Europe and to be more volatile than the performance of more geographically diversified funds. Most developed countries in Western Europe are members of the European Union (EU), and many are also members of the European Monetary Union (EMU), which requires compliance with restrictions on inflation rates, deficits, and debt levels. A significant decline in the value of the euro, or the exit of a country from the EMU, may produce unpredictable effects on trade and commerce generally and could lead to increased volatility in financial markets worldwide. Unemployment in certain European nations is historically high and several countries face significant debt problems. These conditions can significantly affect every country in Europe.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a component of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous secondary market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Candriam SRI European Equity ETF | IQ Candriam SRI European Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.45%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.46%

1 Year

rr_ExpenseExampleYear01

$ 47

3 Years

rr_ExpenseExampleYear03

$ 148

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

IQ Candriam SRI Asia Pacific Equity ETF

IQ Candriam SRI Asia Pacific Equity ETF

Investment Objective

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI Asia Pacific Equity Index (the “Underlying Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses	IQ Candriam SRI Asia Pacific Equity ETF IQ Candriam SRI Asia Pacific Equity ETF
Management Fee	0.45%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.46%

Example.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years
IQ Candriam SRI Asia Pacific Equity ETF | IQ Candriam SRI Asia Pacific Equity ETF | USD ($)	47	148

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Principal Investment Strategies

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $2.1 billion to $187.2 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following five Asia Pacific developed countries Australia, Hong Kong, Japan, New Zealand, and Singapore. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 267 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Principal Risks

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Asia

Investments in securities of issuers in certain Asian countries involve risks that are specific to Asia, including certain legal, regulatory, political and economic risks. Certain Asian countries have experienced expropriation and/or nationalization of assets, confiscatory taxation, political instability, armed conflict and social instability as a result of religious, ethnic, socio-economic and/or political unrest. Some economies in this region are dependent on a range of commodities, and are strongly affected by international commodity prices and particularly vulnerable to price changes for these products. The market for securities in this region may also be directly influenced by the flow of international capital, and by the economic and market conditions of neighboring countries. Some Asian economies are highly dependent on trade and economic conditions in other countries within and outside of Asia can impact these economies.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a components of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous secondary market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Performance Information

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label

Element

Value

IQ Candriam SRI Asia Pacific Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

IQ Candriam SRI Asia Pacific Equity ETF

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks investment results that track (before fees and expenses) the price and yield performance of its underlying index, the IQ Candriam SRI Asia Pacific Equity Index (the “Underlying Index”).

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

No shareholder fees are levied by the Fund for purchases and sales made on the Secondary Market.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund’s performance. As of the date of this Prospectus, the Fund had not yet commenced operations.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Investors purchasing Shares on a national securities exchange, national securities association or over-the-counter trading system where Shares may trade from time to time (each, a “Secondary Market”) may be subject to customary brokerage commissions charged by their broker that are not reflected in the table set forth below.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account brokerage commissions that you pay when purchasing or selling Shares of the Fund.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain at current levels. The return of 5% and estimated expenses are for illustration purposes only, and should not be considered indicators of expected Fund expenses or performance, which may be greater or less than the estimates. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” — or indexing — investment approach designed to track the performance of the Underlying Index, which was developed by IndexIQ LLC (“IndexIQ”) with Candriam Belgium S.A. (“Candriam”) acting as index consultant to IndexIQ. The Underlying Index is designed to deliver exposure to equity securities of companies meeting sustainable and responsible investing (SRI) criteria developed by Candriam and weighted using a non-market-capitalization weighting methodology. The Underlying Index’s weighting methodology seeks to increase the exposure to companies with superior risk- return profiles. As of June 30, 2018, the market capitalization range of the Underlying Index was approximately $2.1 billion to $187.2 billion.

The first step in the SRI security selection process combines a sector-specific analysis and ranking of issuer-specific factors, including corporate governance, environmental impact, and labor practices, along with a macro analysis of the issuer’s exposure to global sustainability trends, including climate change, resource depletion, and health and wellness. This sector-specific analysis evaluates companies within the same sector against each other, using criteria specific to the particular sector. Except for the excluded activities described below, the SRI security selection process seeks to maintain exposure to all industry sectors of the economy (e.g., financials, industrials, consumer discretionary, consumer staples, materials, health care, energy, utilities and information technology). The SRI selection process analyzes securities comprising approximately 85% of the market capitalization of equity securities listed in the following five Asia Pacific developed countries Australia, Hong Kong, Japan, New Zealand, and Singapore. The companies with an overall ranking in the top 70% of the eligible universe within each industry sector based on this SRI selection process are included in the Underlying Index, unless a company is excluded as a result of the second step in the SRI security selection process. The second step in the SRI security selection process is an exclusionary screen based on any continued and significant non-compliance with the principals within the United Nation’s Global Compact as well as the exclusion of companies engaged in certain businesses beyond minimum thresholds (e.g., companies that operate in countries with oppressive regimes, that operate in adult content, alcohol, armament, gambling, nuclear, and tobacco sectors, or that utilize animal testing or genetic modification in research and development). As a result of this second step, the companies selected for inclusion in the Underlying Index represent less than 70% of the eligible universe.

Beginning with the securities selected through the SRI security selection process, the weighting of securities in the Underlying Index is determined through a two-step process. First, the weighting methodology takes into account financial criteria, including average sales, average net earnings, book value, and average operating cash flow, while also maintaining a minimum individual position size. As of June 30, 2018, the Underlying Index consisted of 267 component securities. Second, the weightings from the first step are then adjusted based on value factors (including, earnings yield, operating cash flow yield, and sales-to-enterprise value), quality factors (including, operating cash flow, operating margin, and return on equity), and volatility factors.

The Underlying Index is rebalanced quarterly.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund. An investment in the Fund does not represent a complete investment program. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You should consider carefully the following risks before investing in the Fund.

Asset Class Risk

Securities in the Underlying Index or in the Fund ’s portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Authorized Participant Concentration Risk

Only certain large institutions (an “Authorized Participant”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that those Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with the Fund and no other Authorized Participant is able to step forward to engage in creation and redemption transactions with the Fund, Fund Shares may be more likely to trade at a premium or discount to NAV and possibly face trading halts and/or delisting.

Custody Risk

The Fund invests in securities markets that are less developed than those in the U.S., which may expose the Fund to risks in the process of clearing and settling trades and the holding of securities by local banks, agents and depositories. The less developed a country’s securities market is, the greater the likelihood of custody problems.

Currency Risk

The Fund will invest in securities denominated in currencies other than U.S. dollars (foreign currencies) and much of the income received by the Fund will be in foreign currencies, but the Underlying Index and the Fund’s NAV will be calculated in U.S. dollars. Furthermore the Fund may convert cash in U.S. dollars to foreign currencies to purchase securities. Both the Fund’s ability to track the Underlying Index and Fund returns in general may be adversely impacted by changes in currency exchange rates, which can occur quickly and without warning.

Derivatives Risk

Derivatives are investments whose value depends on (or is derived from) the value of an underlying instrument, such as a security, asset, reference rate or index. Derivatives may be difficult to sell, unwind or value. Derivatives may also be subject to counterparty risk, which is the risk that the counterparty (the party on the other side of the transaction) will be unable or unwilling to honor its contractual obligations to the Fund. Derivatives may also increase the expenses of the Fund. Futures may be more volatile than direct investments in the instrument underlying the futures, and may not correlate perfectly to the underlying instrument. Futures also may involve a small initial investment relative to the risk assumed, which could result in losses greater than if they had not been used. Forward commitments entail the risk that the instrument may be worth less when it is issued or received than the price the Fund agreed to pay when it made the commitment. Swap transactions tend to shift the Fund’s investment exposure from one type of investment to another, and therefore entail the risk that a party will default on its payment obligations to the Fund.

Equity Securities Risk

Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the portfolio managers’ ability to anticipate such changes that can adversely affect the value of the Fund’s holdings. Opportunity for greater gain often comes with greater risk of loss.

Foreign Securities Risk

The Fund invests in the securities of non-U.S. issuers, which securities involve risks beyond those associated with investments in U.S. securities.

Foreign Securities Valuation Risk

To the extent the Fund calculates its NAV based on fair value prices and the value of the Underlying Index is based on the securities’ closing price on foreign securities markets (i.e., the value of the Underlying Index is not based on fair value prices), the valuation of the Fund’s NAV may deviate from the calculation of the Underlying Index.

Geographic Concentration in Asia

Investments in securities of issuers in certain Asian countries involve risks that are specific to Asia, including certain legal, regulatory, political and economic risks. Certain Asian countries have experienced expropriation and/or nationalization of assets, confiscatory taxation, political instability, armed conflict and social instability as a result of religious, ethnic, socio-economic and/or political unrest. Some economies in this region are dependent on a range of commodities, and are strongly affected by international commodity prices and particularly vulnerable to price changes for these products. The market for securities in this region may also be directly influenced by the flow of international capital, and by the economic and market conditions of neighboring countries. Some Asian economies are highly dependent on trade and economic conditions in other countries within and outside of Asia can impact these economies.

Geographic Risk

A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund’s investments in the affected region.

Geopolitical Risk

Some countries and regions in which the Fund invests have experienced security concerns, war or threats of war and aggression, terrorism, economic uncertainty, natural and environmental disasters and/or systemic market dislocations that have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on the U.S. and world economies and markets generally, each of which may negatively impact the Fund’s investments.

Index Risk

The performance of the Underlying Index and the Fund may deviate from that of the markets the Underlying Index seeks to track due to changes that occur more quickly than the quarterly rebalancing process can track. Securities in the Underlying Index or the Fund's portfolio may also underperform in comparison to the general securities markets.

Industry Concentration Risk

To the extent that the Underlying Index is concentrated in a particular industry, the Fund also will be concentrated in that industry. Concentrated Fund investments will subject the Fund to a greater risk of loss as a result of adverse economic, business or other developments than if its investments were diversified across different industry sectors.

Financial Sector Risk

The Fund may invest a significant portion of its assets in companies in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Investment Style Risk

The Underlying Index seeks to provide exposure to the equity securities of companies meeting sustainable and responsible investing criteria. The Underlying Index excludes or limits exposure to securities of certain issuers for nonfinancial reasons, and the Fund may forgo some market opportunities available to funds that do not use these criteria. The application of sustainable and responsible investing criteria may affect the Fund’s exposure to certain sectors or types of investments and may impact the Fund’s relative investment performance depending on whether such sectors or investments are in or out of favor in the market. In addition, there is no guarantee that the construction methodology of the Underlying Index will accurately provide exposure to sustainable and responsible issuers.

Market Risk

The market price of investments owned by the Fund may go up or down, sometimes rapidly or unpredictably.

Mid-Capitalization Stock Risk

Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, temporary illiquidity, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. Such companies may be more vulnerable to adverse business or market developments.

New Fund Risk

The Fund is a new fund. As a new fund, there can be no assurance that it will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Underlying Index than it otherwise would at higher asset levels or it could ultimately liquidate.

Operational Risk

The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund, Advisor and Subadvisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks.

Passive Management Risk

Unlike many investment companies, the Fund seeks to track its Underlying Index and is not “actively” managed. Therefore, it would not necessarily sell a security because the security’s issuer was in financial trouble unless that security is removed from (or was no longer useful in tracking a components of) the Underlying Index.

Risk of Investing in Depositary Receipts

The Fund may invest in depositary receipts, including certain unsponsored depositary receipts. Both sponsored and unsponsored depositary receipts involve risk not experienced when investing directly in the equity securities of an issuer.

Tracking Error Risk

The strategy used by the Advisor to match the performance of the Underlying Index may fail to produce the intended results.

Trading Price Risk

Although it is expected that generally the market price of the Shares will approximate the Fund’s NAV, there may be times when the market price in the Secondary Market and the NAV vary significantly. The Fund faces numerous secondary market trading risks, including the potential lack of an active market for Fund Shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the Fund’s Shares trading at a premium or discount to NAV.

Value Securities Risk

Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. Value securities may go in and out of favor over time.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all investments, there are certain risks of investing in the Fund. The Fund’s Shares will change in value and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

As of the date of this Prospectus, the Fund has not yet commenced operations and therefore does not report its performance information.

IQ Candriam SRI Asia Pacific Equity ETF | IQ Candriam SRI Asia Pacific Equity ETF

Risk/Return:

rr_RiskReturnAbstract

Management Fee

rr_ManagementFeesOverAssets

0.45%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.46%

1 Year

rr_ExpenseExampleYear01

$ 47

3 Years

rr_ExpenseExampleYear03

$ 148

[1] The Fund has not yet commenced operations and Other Expenses are based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Apr. 30, 2018
Registrant Name	dei_EntityRegistrantName	IndexIQ ETF Trust
Central Index Key	dei_EntityCentralIndexKey	0001415995
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Aug. 29, 2018
Document Effective Date	dei_DocumentEffectiveDate	Aug. 29, 2018
Prospectus Date	rr_ProspectusDate	Aug. 29, 2018