Objective, Primary [Text Block]

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Risk/Return [Heading]

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Vident U.S. Bond Strategy ETFTM

Objective [Heading]

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Investment Objective

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The Vident U.S. Bond Strategy ETF™ (the “Fund” or the “U.S. Bond ETF”) seeks to track the performance, before fees and expenses, of the Vident Core U.S. Bond IndexTM (the “Index” or the “U.S. Bond Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund (“Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.

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. For the fiscal year ended August 31, 2024, the Fund’s portfolio turnover rate was 202% of the average value of its portfolio.

Portfolio Turnover, Rate

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202.00%

Expense Example [Heading]

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Expense 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. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or 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 the same.

Expense Example by, Year, Caption [Text]

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

Expense Example, No Redemption, By Year, Caption [Text]

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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 of the Fund

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 Index.

The Vident Core U.S. Bond IndexTM

The Vident Core U.S. Bond IndexTM seeks to improve the overall mix of credit quality, interest rate and yield as compared to traditional U.S. core bond indices. The Index diversifies interest rate and credit risks across all core U.S. bond sectors, including U.S. Treasuries, U.S. agency securities, U.S. agency mortgage-backed securities (“MBS”), and investment-grade corporate bonds, as well as non-core fixed income sectors such as high-yield corporate bonds (also known as “junk bonds”) and Treasury Inflation-Protected Securities (“TIPS”). While diversification among sectors is an important factor that will drive the risk/return profile of the strategy, another source of risk management is derived from the rules-based process that systematically over- or under-weights each sector based on valuations of each sector, historical relative valuations across sectors, sector default rates, and other quantitative factors. Within the investment grade and high yield corporate sectors, the strategy seeks to improve corporate bond exposures by screening for companies with relatively stronger leadership, governance, and creditworthiness factors. Within each sector, individual bonds are weighted based on a combination of yield, duration (i.e., interest rate sensitivity), creditworthiness, leadership, and governance factors, rather than amount of debt/bonds outstanding. The Index also seeks to improve liquidity by eliminating small issues and non-U.S. issuers.

The Index limits exposure to each of the high-yield corporate bonds and TIPS sectors to 20% and 15% of the Index, respectively. The Index will generally have an effective duration of three to seven years and will generally have an average credit quality of investment grade.

All rules are systematized and rely on data available at the end of each rebalancing period. The Index is rebalanced monthly and reconstituted quarterly in January, April, July, and October. As of November 29, 2024, the Index was comprised of 239 component securities.

The Index was created on November 30, 2015 by Vident Financial, LLC, the former parent company of Vident Asset Management (“Vident” or the “Adviser”) for use by the Fund. The Adviser now also serves as the Fund’s index provider.

The Fund’s Investment Strategy

Under normal circumstances, at least 80% of the net assets, plus borrowings for investment purposes, of the Fund will be invested in debt instruments that are principally traded in the United States.

The Fund attempts to invest all, or substantially all, of its assets in the bonds that make up the Index. The Fund expects to use a “replication” strategy to achieve its investment objective, meaning it may invest in all of the component securities of the Index, but may, when the adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole.

The Fund may utilize the “To Be Announced” (“TBA”) market for MBS investments. The TBA market allows investors to gain exposure to MBS with certain broad characteristics (maturity, coupon, age) without taking delivery of the actual securities until the settlement day which is once every month. In addition, the Fund may utilize the TBA roll market, in which one sells, in the TBA market, the security for current month settlement, while simultaneously committing to buy the same TBA security for next month settlement. The Fund may utilize the TBA roll market for extended periods of time without taking delivery of the physical securities.

To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index.

Strategy Portfolio Concentration [Text]

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Under normal circumstances, at least 80% of the net assets, plus borrowings for investment purposes, of the Fund will be invested in debt instruments that are principally traded in the United States. The Fund attempts to invest all, or substantially all, of its assets in the bonds that make up the Index. The Fund expects to use a “replication” strategy to achieve its investment objective, meaning it may invest in all of the component securities of the Index, but may, when the adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole. The Fund may utilize the “To Be Announced” (“TBA”) market for MBS investments. The TBA market allows investors to gain exposure to MBS with certain broad characteristics (maturity, coupon, age) without taking delivery of the actual securities until the settlement day which is once every month. In addition, the Fund may utilize the TBA roll market, in which one sells, in the TBA market, the security for current month settlement, while simultaneously committing to buy the same TBA security for next month settlement. The Fund may utilize the TBA roll market for extended periods of time without taking delivery of the physical securities. To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index.

Risk [Heading]

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Principal Risks of Investing in the Fund

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund’s performance for the calendar years ended December 31. The table illustrates how the Fund’s average annual returns for the 1-year, 5-year, and since inception periods compare with those of the FTSE US Broad Investment Grade Bond Index, a broad measure of U.S. bond market performance, and the blended returns of the Vident Core U.S. Bond Index and Vident Core U.S. Bond Strategy Index, the indexes tracked by the Fund during the applicable period. The Fund’s past performance, before and after taxes, does not necessarily indicate how it will perform in the future. Updated performance information is available on the Fund’s website at www.videntam.com.

Performance Information Illustrates Variability of Returns [Text]

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The following performance information indicates some of the risks of investing in the Fund.

Performance Availability Website Address [Text]

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www.videntam.com

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance, before and after taxes, does not necessarily indicate how it will perform in the future.

Bar Chart [Heading]

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Calendar Year Total Returns

Bar Chart Closing [Text Block]

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For the year-to-date period ended September 30, 2024, the Fund’s total return was 4.46%. During the period of time shown in the bar chart, the Fund’s highest quarterly return was 7.53% for the quarter ended December 31, 2023, and the lowest quarterly return was -6.65% for the quarter ended March 31, 2022.

Year to Date Return, Label

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year-to-date period ended

Bar Chart, Year to Date Return, Date

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Sep. 30, 2024

Bar Chart, Year to Date Return

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4.46%

Highest Quarterly Return, Label

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highest quarterly return

Highest Quarterly Return, Date

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Dec. 31, 2023

Highest Quarterly Return

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7.53%

Lowest Quarterly Return, Label

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lowest quarterly return

Lowest Quarterly Return, Date

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Mar. 31, 2022

Lowest Quarterly Return

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(6.65%)

Performance Table Heading

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Average Annual Total Returns For the Periods Ended December 31, 2023

Performance Table Uses Highest Federal Rate

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Performance Table Not Relevant to Tax Deferred

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After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account (“IRA”) or other tax-advantaged accounts.

Performance Table Explanation after Tax Higher

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In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Shares” may be higher than the other return figures for the same period. A higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.

Performance Table Footnotes

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Effective January 6, 2016, the Fund’s investment objective changed to track the performance, before fees and expenses, of the Vident Core U.S. Bond Index. Prior to January 6, 2016, the Fund’s investment objective was to track the price and total return performance, before fees and expenses, of the Vident Core U.S. Bond Strategy Index. Performance shown for periods prior to January 6, 2016, is that of the Vident Core U.S. Bond Strategy Index.

Performance Table Closing [Text Block]

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After-tax returns are calculated using the historical highest individual federal marginal income tax rates during the period covered by the table above and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account (“IRA”) or other tax-advantaged accounts. In certain cases, the figure representing “Return After Taxes on Distributions and Sale of Shares” may be higher than the other return figures for the same period. A higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.

Vident U.S. Bond Strategy ETF™ | Risk Lose Money [Member]

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Vident U.S. Bond Strategy ETF™ | Call Risk Member

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As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund.

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Vident U.S. Bond Strategy ETF™ | Credit Risk Member

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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.

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Vident U.S. Bond Strategy ETF™ | ETF Risks Member

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Credit Risk. Debt issuers and other counterparties may not honor their obligations or may have their debt downgraded by ratings agencies.

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Vident U.S. Bond Strategy ETF™ | ETF Risks Member, Authorized Participants, Market Makers, And Liquidity Providers Concentration Risk Member

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ETF Risks. The Fund is an ETF, and, as a result of an ETF’s structure, it is exposed to the following risks:

◦Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

◦Cash Redemption Risk. The Fund’s investment strategy may require it to redeem shares for cash or to otherwise include cash as part of its redemption proceeds. The Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used.

◦Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

◦Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

◦Trading. Although Shares are listed for trading on NYSE Arca, Inc. (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. There can be no assurance that an active trading market for such Shares will develop or be maintained. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.

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Vident U.S. Bond Strategy ETF™ | ETF Risks Member, Cash Redemption Risk Member

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Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

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Vident U.S. Bond Strategy ETF™ | ETF Risks Member, Costs Of Buying Or Selling Shares Member

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Cash Redemption Risk. The Fund’s investment strategy may require it to redeem shares for cash or to otherwise include cash as part of its redemption proceeds. The Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used.

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Vident U.S. Bond Strategy ETF™ | ETF Risks Member, Shares May Trade At Prices Other Than NAV Member

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Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

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Vident U.S. Bond Strategy ETF™ | ETF Risks Member, Trading Risk Member

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Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

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Vident U.S. Bond Strategy ETF™ | Extension Risk Member

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Trading. Although Shares are listed for trading on NYSE Arca, Inc. (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. There can be no assurance that an active trading market for such Shares will develop or be maintained. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.

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Vident U.S. Bond Strategy ETF™ | Government Obligations Risk Member

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Extension Risk. During periods of rising interest rates, certain debt obligations will 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.

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Vident U.S. Bond Strategy ETF™ | High-Yield Securities Risk Member

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Government Obligations Risk. No assurance can be given that the U.S. government will provide financial support to U.S. government-sponsored agencies or instrumentalities where it is not obligated to do so by law, such as the Federal National Mortgage Association (“Fannie Mae”) and the Federal Home Loan Mortgage Corporation (“Freddie Mac”). Securities issued by Fannie Mae and Freddie Mac have historically been supported only by the discretionary authority of the U.S. government. While the U.S. government provides financial support to various U.S. government-sponsored agencies and instrumentalities, such as Fannie Mae and Freddie Mac, no assurance can be given that it will always do so. In September 2008, at the direction of the U.S. Department of the Treasury, Fannie Mae and Freddie Mac were placed into conservatorship under the Federal Housing Finance Agency (“FHFA”), an independent regulator, and they remain in such status as of the date of this Prospectus. The U.S. government also took steps to provide additional financial support to Fannie Mae and Freddie Mac.

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Vident U.S. Bond Strategy ETF™ | Interest Rate Risk Member

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High-Yield Securities Risk. High-yield securities (also known as “junk bonds”) carry a greater degree of risk and are considered speculative by the major credit rating agencies. High-yield securities may be issued by companies that are restructuring, are smaller and less creditworthy, or are more highly indebted than other companies. This means that they may have more difficulty making scheduled payments of principal and interest. Changes in the value of high-yield securities are influenced more by changes in the financial and business position of the issuing company than by changes in interest rates when compared to investment grade securities. High-yield securities have greater volatility because there is less certainty that principal and interest payments will be made as scheduled. The Fund’s investments in high-yield securities expose it to a substantial degree of credit risk. These investments are considered speculative under traditional investment standards. Prices of high-yield securities will rise and fall primarily in response to actual or perceived changes in the issuer's financial health, although changes in market interest rates also will affect prices. High-yield securities may experience reduced liquidity and sudden and substantial decreases in price.

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Vident U.S. Bond Strategy ETF™ | Issuer-Specific Risk Member

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Interest Rate Risk. An increase in interest rates may cause the value of fixed-income securities held by the Fund to decline. Securities with longer durations tend to be more sensitive to interest rate changes, usually making them more volatile than securities with shorter durations. For example, the price of a bond with a three-year duration would be expected to drop by approximately 3% in response to a 1% increase in interest rates. Generally, the longer the maturity and duration of a bond, the more sensitive the bond is to interest rate risk.

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Vident U.S. Bond Strategy ETF™ | Liquidity Risk Member

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Issuer-Specific Risk. Issuer-specific events, including changes in the financial condition of an issuer, can have a negative impact on the value of the Fund.

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Vident U.S. Bond Strategy ETF™ | Market Risk Member

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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.

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Vident U.S. Bond Strategy ETF™ | Mortgage- And Asset-Backed Securities Risk Member

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Market Risk. The trading prices of debt securities and other instruments fluctuate in response to a variety of factors. The Fund’s NAV and market price may fluctuate significantly in response to these and other factors. As a result, an investor could lose money over short or long periods of time.

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Vident U.S. Bond Strategy ETF™ | Passive Investment Risk Member

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Mortgage- and Asset-Backed Securities Risk. The Fund may invest in U.S. government agency-backed mortgage- and asset-backed securities. Mortgage- and asset-backed securities are subject to interest rate risk. Modest movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain types of these securities. When interest rates fall, mortgage- and asset-backed securities may be subject to prepayment risk. When interest rates rise, certain types of mortgage- and asset-backed securities are subject to extension risk. Mortgage- and asset-backed securities can also be subject to the risk of default on the underlying residential or commercial mortgage(s) or other assets.

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Vident U.S. Bond Strategy ETF™ | Portfolio Turnover Risk Member

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Passive Investment Risk. The Fund invests in the securities included in, or representative of, the Index regardless of their investment merit. The Fund does not attempt to outperform the Index or take defensive positions in declining markets. As a result, the Fund’s performance may be adversely affected by a general decline in the market segments relating to the Index.

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Vident U.S. Bond Strategy ETF™ | Prepayment Risk Member

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Portfolio Turnover Risk. The Fund may trade all or a significant portion of the securities in its portfolio in connection with each rebalance and reconstitution of its Index. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.

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Vident U.S. Bond Strategy ETF™ | Sector Risk Member

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Prepayment Risk. This is the risk that a borrower will prepay some or the entire principal owed to the Fund. If that happens, the Fund may have to replace the security by investing the proceeds in a security with a lower yield. This could reduce the share price and income distributions of the Fund.

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Vident U.S. Bond Strategy ETF™ | TBA Securities And Rolls Risk Member

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Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

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Vident U.S. Bond Strategy ETF™ | Tracking Error Risk Member

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TBA Securities and Rolls Risk. TBA transactions are subject to increased credit risk and increased overall investment exposure. TBA rolls involve the risk that the Fund’s counterparty will be unable to deliver the mortgage-backed securities underlying the TBA roll at the fixed time. If the buyer files for bankruptcy or becomes insolvent, the buyer or its representative may ask for and receive an extension of time to decide whether to enforce the Fund’s repurchase obligation. In addition, the Fund earns interest by investing the transaction proceeds during the roll period. TBA roll transactions may have the effect of creating leverage in the Fund’s portfolio.

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Vident U.S. Bond Strategy ETF™ | FTSE US Broad Investment Grade Bond Index (reflects no deduction for fees, expenses, or taxes)

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Tracking Error Risk. As with all index funds, the performance of the Fund and the Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.

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

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(reflects no deduction for fees, expenses, or taxes)

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FTSE US Broad Investment Grade Bond Index (reflects no deduction for fees, expenses, or taxes)

rr_AverageAnnualReturnYear01

5.62%

rr_AverageAnnualReturnYear05

1.12%

rr_AverageAnnualReturnSinceInception

1.33%

Vident U.S. Bond Strategy ETF™ | Vident Core U.S. Bond Index/Vident Core U.S. Bond Strategy Index (reflects no deduction for fees, expenses, or taxes)

rr_AverageAnnualReturnInceptionDate

Oct. 15, 2014

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

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(reflects no deduction for fees, expenses, or taxes)

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Vident Core U.S. Bond Index/Vident Core U.S. Bond Strategy Index1(reflects no deduction for fees, expenses, or taxes)

^[1]

rr_AverageAnnualReturnYear01

8.71%

^[1]

rr_AverageAnnualReturnYear05

2.00%

^[1]

rr_AverageAnnualReturnSinceInception

1.94%

^[1]

Vident U.S. Bond Strategy ETF™ | Vident U.S. Bond Strategy ETF™

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Oct. 15, 2014

^[1]

Management Fees (as a percentage of Assets)

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Trading Symbol

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VBND

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0.41%

Distribution and Service (12b-1) Fees

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none

Other Expenses (as a percentage of Assets):

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none

Expenses (as a percentage of Assets)

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0.41%

Expense Example, with Redemption, 1 Year

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$ 42

Expense Example, with Redemption, 3 Years

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132

Expense Example, with Redemption, 5 Years

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230

Expense Example, with Redemption, 10 Years

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518

Expense Example, No Redemption, 1 Year

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Expense Example, No Redemption, 3 Years

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132

Expense Example, No Redemption, 5 Years

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230

Expense Example, No Redemption, 10 Years

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$ 518

Annual Return 2015

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0.38%

Annual Return 2016

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2.38%

Annual Return 2017

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2.85%

Annual Return 2018

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(0.78%)

Annual Return 2019

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9.48%

Annual Return 2020

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5.68%

Annual Return 2021

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(0.59%)

Annual Return 2022

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(14.02%)

Annual Return 2023

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7.79%

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Return Before Taxes

rr_AverageAnnualReturnYear01

7.79%

rr_AverageAnnualReturnYear05

1.28%

rr_AverageAnnualReturnSinceInception

1.15%

Vident U.S. Bond Strategy ETF™ | Vident U.S. Bond Strategy ETF™ | After Taxes on Distributions

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Oct. 15, 2014

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Return After Taxes on Distributions

rr_AverageAnnualReturnYear01

6.04%

rr_AverageAnnualReturnYear05

0.21%

Vident U.S. Bond Strategy ETF™ | Vident U.S. Bond Strategy ETF™ | After Taxes on Distributions and Sales

rr_AverageAnnualReturnSinceInception

0.14%

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Return After Taxes on Distributions and Sale of Shares

rr_AverageAnnualReturnYear01

4.56%

rr_AverageAnnualReturnYear05

0.54%

Vident U.S. Equity Strategy ETF™

rr_AverageAnnualReturnSinceInception

0.45%

Objective, Primary [Text Block]

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Risk/Return [Heading]

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Vident U.S. Equity Strategy ETFTM

Objective [Heading]

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Investment Objective

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The Vident U.S. Equity Strategy ETF™ (the “Fund” or “U.S. Equity ETF”) seeks to track the performance, before fees and expenses, of the Vident U.S. Quality IndexTM (the “Index” or the “U.S. Quality Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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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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Portfolio Turnover, Rate

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65.00%

Expense Example [Heading]

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Expense Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

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

Expense Example, No Redemption, By Year, Caption [Text]

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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 of the Fund

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 Index.

The Vident U.S. Quality IndexTM

The Index is a rules-based, systematic strategy index comprised of equity securities principally traded in the U.S. market of issuers domiciled in the United States. The starting universe of eligible companies in the Index consists of U.S.-listed common stock of U.S. companies with market capitalizations of at least $100 million. Companies eligible for inclusion must also meet certain minimum liquidity requirements.

The companies remaining in the Index universe are placed into one of three market capitalization segments: Giant (companies in the top 40% by market capitalization at the time of purchase), Large (companies in the top 40-70% range by market capitalization at the time of purchase) and SMID (also known as small/mid-capitalization companies, which are the remaining companies in the bottom 30% of the Index universe).

Companies are assessed across a variety of proprietary corporate governance criteria with risks flagged. The number of flagged risks are summed to form a company’s Corporate Governance Score. Companies with lower Corporate Governance Scores receive lower potential allocations. The proprietary corporate governance criteria are broadly designed to identify issues relating to board structure, incentives alignment, and shareholder rights.

At the time of each semi-annual reconstitution, the Index employs a multi-factor model for scoring and ranking stocks based on certain quality and momentum factors, and the stocks in the Index are weighted based on these factors and subject to certain adjustments and limitations, including the following constraints:

•the maximum allocation to a Giant market-capitalization company is 2%;

•the maximum allocation to a Large market-capitalization company is 1%; and

•the maximum allocation to a SMID market-capitalization company is 0.5%.

The Index’s allocation and weighting to a company is subject to certain liquidity thresholds. All companies eligible for inclusion receive an initial weight of 0.10%, and then the maximum weighting by market-capitalization segment is applied. Further adjustments are then made based on the company’s Corporate Governance Score and the company’s quality and momentum attributes, as described below.

The Index’s maximum allocation to a company may be adjusted downward by as much as 100% based on the company’s Corporate Governance Score (i.e., the Index uses the Corporate Governance Score to reduce potential weightings to companies with less favorable rankings relative to their market segment peers). The Index’s maximum allocation to a company may be increased by 25% if that company ranks in the top 25th percentile within its market-capitalization segment (e.g., if a company’s initial allocation is 2%, then the allocation would be 2.5%). The Index’s allocation to a market cap segment, at the time of the semi-annual reconstitution, will be within 5% of the initial cap weighted universe’s allocation to that segment.

A company’s weighting is further adjusted by considering the company’s quality and momentum attributes, based on a proprietary multi-factor model for scoring and ranking stocks. The model combines factors into two distinct factor composites, each seeking to score different stock attributes. These factor composites can be broadly categorized into the following groupings: quality and momentum. For stocks in the Giant and Large market cap segment, quality is defined as profitability and profitability growth. The components account for current and historical gross profits, return on invested capital, cash flows, and margins of companies in each segment. For stocks in SMID market cap segment, two additional composites are utilized: cost of capital and use of capital. These composites account for characteristics such as leverage, credit strength, debt, and equity issuance.

All rules are systematized and rely on data available at the end of each rebalancing period. The Index is reconstituted and rebalanced semi-annually in February and August. As of November 29, 2024, the Index was comprised of 126 component securities and had significant exposure to the information technology, consumer discretionary, financials, industrials, and health care sectors.

The Index was created on November 30, 2022, by Vident Financial, LLC, the former parent company of Vident Asset Management (“Vident” or the “Adviser”) for use by the Fund. The Adviser now also serves as the Fund’s index provider.

The Fund’s Investment Strategy

The Fund attempts to invest all, or substantially all, of its assets in the common stocks that make up the Index. The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it may invest in all of the component securities of the Index, but may, when the adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole. Vident, the Fund’s investment adviser, expects that, over time, the correlation between the Fund’s performance and that of the Index, before fees and expenses, will be 95% or better.

Strategy Portfolio Concentration [Text]

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Under normal circumstances, at least 80% of the net assets, plus borrowings for investment purposes, of the Fund will be invested in equity securities that are principally traded in the United States.The Fund attempts to invest all, or substantially all, of its assets in the common stocks that make up the Index. The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it may invest in all of the component securities of the Index, but may, when the adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole. Vident, the Fund’s investment adviser, expects that, over time, the correlation between the Fund’s performance and that of the Index, before fees and expenses, will be 95% or better. To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index.

Risk [Heading]

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Principal Risks of Investing in the Fund

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund’s performance for the calendar years ended December 31. The table illustrates how the Fund’s average annual returns for the 1-year, 5-year, and since inception periods compare with those of the S&P 500 Index and the Morningstar US Market Total Return Index, each a broad measure of U.S. equity market performance, and the blended returns of the Vident U.S. Quality Index™, Vident Core U.S. Stock Index, and Vident Core U.S. Equity Index, the indexes tracked by the Fund during the applicable period. The Fund’s past performance, before and after taxes, does not necessarily indicate how it will perform in the future. Updated performance information is available on the Fund’s website at www.videntam.com.

Effective December 31, 2022, the Fund’s investment objective changed to track the performance, before fees and expenses, of the Vident U.S. Quality Index. From January 6, 2016, to December 30, 2022, the Fund’s investment objective was to track the price and total return performance, before fees and expenses, of the Vident Core U.S. Stock Index. Performance shown for this period is that of the Vident Core U.S. Stock Index. Prior to January 6, 2016, the Fund’s investment objective was to track the price and total return performance, before fees and expenses, of the Vident Core U.S. Equity Index. Performance shown for periods prior to January 6,

2016, is that of the Vident Core U.S. Equity Index. Consequently, the performance shown below prior to December 31, 2022, reflects the Fund’s previous investment objectives and principal investment strategies and does not necessarily indicate how the Fund’s current investment strategy will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

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The following performance information indicates some of the risks of investing in the Fund.

Performance Availability Website Address [Text]

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www.videntam.com

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance, before and after taxes, does not necessarily indicate how it will perform in the future.

Bar Chart [Heading]

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Calendar Year Total Returns

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For the year-to-date period ended September 30, 2024, the Fund’s total return was 13.03%. During the period of time shown in the bar chart, the Fund’s highest quarterly return was 22.00% for the quarter ended December 31, 2020, and the lowest quarterly return was -31.81% for the quarter ended March 31, 2020.

Year to Date Return, Label

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year-to-date period ended

Bar Chart, Year to Date Return, Date

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Sep. 30, 2024

Bar Chart, Year to Date Return

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13.03%

Highest Quarterly Return, Label

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highest quarterly return

Highest Quarterly Return, Date

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Dec. 31, 2020

Highest Quarterly Return

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22.00%

Lowest Quarterly Return, Label

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lowest quarterly return

Lowest Quarterly Return, Date

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Mar. 31, 2020

Lowest Quarterly Return

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(31.81%)

Performance Table Heading

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Average Annual Total Returns For the Periods Ended December 31, 2023

Performance Table Uses Highest Federal Rate

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Performance Table Not Relevant to Tax Deferred

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After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account (“IRA”) or other tax-advantaged accounts.

Performance Table Footnotes

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Vident Core U.S. Equity Index before January 6, 2016; Vident Core U.S. Stock Index from January 6, 2016, through December 30, 2022; Vident U.S. Quality Index thereafter.

Performance Table Closing [Text Block]

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Vident U.S. Equity Strategy ETF™ | Risk Lose Money [Member]

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Vident U.S. Equity Strategy ETF™ | Equity Market Risk Member

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As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund.

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Vident U.S. Equity Strategy ETF™ | ETF Risks Member

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acts of terrorism, spread of infectious diseases or other public health issues (such as the global pandemic caused by the COVID-19 virus), recessions, rising inflation, or other events could have a significant negative impact on the Fund and its investments. Such events may affect certain geographic regions, countries, sectors and industries more significantly than others. Such events could adversely affect the prices and liquidity of the Fund’s portfolio securities or other instruments and could result in disruptions in the trading markets.

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Vident U.S. Equity Strategy ETF™ | ETF Risks Member, Authorized Participants, Market Makers, And Liquidity Providers Concentration Risk Member

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ETF Risks. The Fund is an ETF, and, as a result of an ETF’s structure, it is exposed to the following risks:

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Vident U.S. Equity Strategy ETF™ | ETF Risks Member, Costs Of Buying Or Selling Shares Member

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Vident U.S. Equity Strategy ETF™ | ETF Risks Member, Shares May Trade At Prices Other Than NAV Member

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Vident U.S. Equity Strategy ETF™ | ETF Risks Member, Trading Risk Member

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Vident U.S. Equity Strategy ETF™ | Large-Capitalization Investing Risk Member

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Vident U.S. Equity Strategy ETF™ | Mid-Capitalization Investing Member

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Large-Capitalization Investing. The Fund’s performance may be adversely affected if securities of large cap companies underperform securities of smaller-capitalization companies or the market as a whole. The securities of large cap companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

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Vident U.S. Equity Strategy ETF™ | Passive Investment Risk Member

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Mid-Capitalization Investing. The Fund may invest in the securities of mid-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of mid-capitalization companies underperform securities of other capitalization ranges or the market as a whole. Securities of smaller companies are often more vulnerable to market volatility than securities of larger companies.

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Vident U.S. Equity Strategy ETF™ | Sector Risk Member

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Vident U.S. Equity Strategy ETF™ | Sector Risk Member, Financials Sector Risk Member

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Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

◦Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

◦Consumer Discretionary Sector Risk. The success of consumer product manufacturers and retailers is tied closely to the performance of domestic and international economies, interest rates, exchange rates, competition, consumer confidence, changes in demographics and consumer preferences. Companies in the consumer discretionary sector depend heavily on disposable household income and consumer spending, and such companies may be strongly affected by social trends and marketing campaigns. These companies may be subject to severe competition, which may have an adverse impact on their profitability.

◦Financials Sector Risk. This sector, which includes banks, insurance companies, and financial service firms, can be significantly affected by changes in interest rates, government regulation, the rate of defaults on corporate, consumer and government debt, the availability and cost of capital, and fallout from the housing and sub-prime mortgage crisis. Banks, in particular, are subject to volatile interest rates, severe price competition, and extensive government oversight and regulation, which may limit certain economic activities available to banks, impact their fees and overall profitability, and establish capital maintenance requirements. In addition, banks may have concentrated portfolios of loans or investments that make them vulnerable to economic conditions that affect that industry. Insurance companies are subject to similar risks as banks, including adverse economic conditions, changes in interest rates, increased competition and government regulation, but insurance companies are more at risk from changes in tax law, government imposed premium rate caps, and catastrophic events, such as earthquakes, floods, hurricanes and terrorist acts. This sector has experienced significant losses in the recent past, and the impact of higher interest rates, 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. In recent years, cyber attacks and technology malfunctions and failures have become increasingly frequent in the financial sector and have caused significant losses.

◦Industrials Sector Risk. The industrials sector can be significantly affected by, among other things, worldwide economic growth, supply and demand for specific products and services, rapid technological developments, international political and economic developments, environmental issues, tariffs and trade barriers, and tax and governmental regulatory policies. As the demand for, or prices of, industrials increase, the value of the Fund’s investments generally would be expected to also increase. Conversely, declines in the demand for, or prices of, industrials generally would be expected to contribute to declines in the value of such securities. Such declines may occur quickly and without warning and may negatively impact the value of the Fund and your investment.

◦Health Care Sector Risk. Companies in the health care sector are subject to extensive government regulation and their profitability can be significantly affected by restrictions on government reimbursement for medical expenses, rising costs of medical products and services, pricing pressure (including price discounting), limited product lines, an increased emphasis on the delivery of healthcare through outpatient services, loss or impairment of intellectual property rights and litigation regarding product or service liability.

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Vident U.S. Equity Strategy ETF™ | Sector Risk Member, Consumer Discretionary Sector Risk Member

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Vident U.S. Equity Strategy ETF™ | Sector Risk Member, Industrials Sector Risk Member

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Vident U.S. Equity Strategy ETF™ | Sector Risk Member, Information Technology Sector Risk Member

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Industrials Sector Risk. The industrials sector can be significantly affected by, among other things, worldwide economic growth, supply and demand for specific products and services, rapid technological developments, international political and economic developments, environmental issues, tariffs and trade barriers, and tax and governmental regulatory policies. As the demand for, or prices of, industrials increase, the value of the Fund’s investments generally would be expected to also increase. Conversely, declines in the demand for, or prices of, industrials generally would be expected to contribute to declines in the value of such securities. Such declines may occur quickly and without warning and may negatively impact the value of the Fund and your investment.

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Vident U.S. Equity Strategy ETF™ | Sector Risk Member, Health Care Sector Risk Member

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Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

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Vident U.S. Equity Strategy ETF™ | Small-Capitalization Investing Member

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Health Care Sector Risk. Companies in the health care sector are subject to extensive government regulation and their profitability can be significantly affected by restrictions on government reimbursement for medical expenses, rising costs of medical products and services, pricing pressure (including price discounting), limited product lines, an increased emphasis on the delivery of healthcare through outpatient services, loss or impairment of intellectual property rights and litigation regarding product or service liability.

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Vident U.S. Equity Strategy ETF™ | Tracking Error Risk Member

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Small-Capitalization Investing. The Fund may invest in the securities of small-capitalization companies. As a result, the Fund may be more volatile than funds that invest in larger, more established companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than larger capitalization stocks or the stock market as a whole. Small-capitalization companies may be particularly sensitive to changes in interest rates, government regulation, borrowing costs, and earnings.

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Vident U.S. Equity Strategy ETF™ | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

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

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(reflects no deduction for fees, expenses, or taxes)

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S&P 500 Index(reflects no deduction for fees, expenses, or taxes)

rr_AverageAnnualReturnYear01

26.29%

rr_AverageAnnualReturnYear05

15.69%

rr_AverageAnnualReturnSinceInception

12.13%

Vident U.S. Equity Strategy ETF™ | Morningstar US Market Total Return Index (reflects no deduction for fees, expenses, or taxes)

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Jan. 21, 2014

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

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(reflects no deduction for fees, expenses, or taxes)

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Morningstar US Market Total Return Index(reflects no deduction for fees, expenses, or taxes)

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26.43%

rr_AverageAnnualReturnYear05

15.25%

rr_AverageAnnualReturnSinceInception

11.66%

Vident U.S. Equity Strategy ETF™ | Vident U.S. Quality Index™/Vident Core U.S. Stock Index/Vident Core U.S. Equity Index (reflects no deduction for fees, expenses, or taxes)

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Jan. 21, 2014

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

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(reflects no deduction for fees, expenses, or taxes)

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Vident U.S. Quality Index™/Vident Core U.S. Stock Index/Vident Core U.S. Equity Index1(reflects no deduction for fees, expenses, or taxes)

^[2]

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24.57%

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rr_AverageAnnualReturnYear05

14.74%

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rr_AverageAnnualReturnSinceInception

9.10%

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Vident U.S. Equity Strategy ETF™ | Vident U.S. Equity Strategy ETF™

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Jan. 21, 2014

Management Fees (as a percentage of Assets)

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Trading Symbol

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VUSE

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0.50%

Distribution and Service (12b-1) Fees

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none

Other Expenses (as a percentage of Assets):

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none

Expenses (as a percentage of Assets)

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0.50%

Expense Example, with Redemption, 1 Year

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$ 51

Expense Example, with Redemption, 3 Years

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160

Expense Example, with Redemption, 5 Years

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280

Expense Example, with Redemption, 10 Years

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628

Expense Example, No Redemption, 1 Year

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Expense Example, No Redemption, 3 Years

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160

Expense Example, No Redemption, 5 Years

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280

Expense Example, No Redemption, 10 Years

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$ 628

Annual Return 2015

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(6.06%)

Annual Return 2016

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18.71%

Annual Return 2017

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16.44%

Annual Return 2018

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(14.75%)

Annual Return 2019

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20.43%

Annual Return 2020

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6.59%

Annual Return 2021

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35.48%

Annual Return 2022

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(9.30%)

Annual Return 2023

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23.78%

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Return Before Taxes

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23.78%

rr_AverageAnnualReturnYear05

14.32%

rr_AverageAnnualReturnSinceInception

8.97%

Vident U.S. Equity Strategy ETF™ | Vident U.S. Equity Strategy ETF™ | After Taxes on Distributions

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Jan. 21, 2014

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Return After Taxes on Distributions

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23.42%

rr_AverageAnnualReturnYear05

13.93%

Vident U.S. Equity Strategy ETF™ | Vident U.S. Equity Strategy ETF™ | After Taxes on Distributions and Sales

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8.60%

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Return After Taxes on Distributions and Sale of Shares

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14.30%

rr_AverageAnnualReturnYear05

11.44%

Vident International Equity Strategy ETF™

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7.25%

Objective, Primary [Text Block]

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Risk/Return [Heading]

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Vident International Equity Strategy ETFTM

Objective [Heading]

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Investment Objective

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The Vident International Equity Strategy ETF™ (the “Fund” or “International Equity ETF”) seeks to track the performance, before fees and expenses, of the Vident Core International Equity Index™ (the “Index” or the “International Equity Index”).

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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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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Portfolio Turnover, Rate

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64.00%

Expense Example [Heading]

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Expense Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

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

Expense Example, No Redemption, By Year, Caption [Text]

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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 of the Fund

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 Index.

The Vident Core International Equity Index™

The Index is a rules-based, systematic strategy index comprised of equity securities of issuers in developed and emerging markets outside of the United States. The strategy seeks to provide a systematic and optimized investment process that addresses the risks and opportunities of allocating capital in and among international equities.

Country Allocation

Index construction begins by identifying a universe of countries that are deemed to represent the bulk of investable and reliable stock opportunities in the largest and most liquid developed and emerging markets countries located outside of the United States. The Index determines a country’s investability based on factors including the country’s liquidity, accessibility to foreign investors, opportunities for efficient transactions, and capital controls. The Index determines a country’s reliability based on factors including governance, regulatory oversight, market operational efficiency, legal protections for minority and foreign investors and institutional stability. While the number of countries represented in the Index may change from time to time (e.g., at Index reconstitution or rebalance), the number of countries represented in the Index is expected to generally be between 25 and 40.

Each country within the investable universe is assigned a Country Principles Score (“CPS”), which is calculated utilizing a proprietary scoring methodology that seeks to weigh the relative resilience of a country to economic and financial shocks and the relative attractiveness of its investment opportunities. A country’s resilience reflects the capacity of a country’s equity markets to absorb and recover from economic and financial shocks and is measured based on a variety of economic metrics related to its financial capital resources (e.g., the country’s deficit as a percentage of gross domestic product (“GDP”), physical capital resources (e.g., total investment as a percentage of GDP), human resources (e.g., productivity, GDP per capital), and institutional and organizational resources (i.e., measures of legal and corporate rights). A country’s investment opportunity is measured based on short- and long-term

changes in the country’s business and regulatory environment and equity market valuations. Allocation across countries is based on an optimization model that seeks to maximize the Index’s overall CPS while ensuring the Index portfolio is liquid, well diversified across countries and regions, and transaction cost and turnover efficient.

Stock Selection

The Index employs a multi-factor model for scoring and ranking stocks listed on a securities exchange within each country in the Index universe. The model combines 20 factors into three distinct factor composites, each seeking to score different stock attributes:


Component	Examples	Weight

Valuation	Price-to-book ratio, cash flow to enterprise value	50%
Quality	Gross profitability, return on invested capital, margin expansion, leverage, debt & equity issuance	30%
Momentum	Total return for past six months	20%

Stocks are excluded from the Index universe if (i) they trade primarily in China, (ii) the stock’s issuer is domiciled in Russia or India and does not have a depositary receipt that meets the Index’s liquidity guidelines, (iii) the stock’s issuer has a market capitalization of less than US$1 billion (US$800 million for stocks already in the Index), or (iv) the stock does not meet certain minimum liquidity requirements.

At the time of each reconstitution, the optimization model weights the remaining stocks to maximize the attractive factor attributes of the stocks subject to the following constraints: (i) a maximum allocation of 0.5% for any individual stock, (ii) certain liquidity thresholds, (iii) a maximum allocation of 7.5% for any individual country, and (iv) sector allocations constrained to remain close to their sector weights in a traditional market capitalization weighted index.

All rules are systematized and rely on data available at the end of each rebalancing period. The Index is reconstituted and rebalanced semi-annually in January and July. As of November 29, 2024, the Index was comprised of 244 component securities and had significant exposure to the financials, consumer discretionary, industrials, and information technology.

The Index was created on December 31, 2014 by Vident Financial, LLC, the former parent of Vident Asset Management (“Vident” or the “Adviser”) for use by the Fund. The Adviser now also serves as the Fund’s index provider.

The Fund’s Investment Strategy

Under normal circumstances, at least 80% of the net assets, plus borrowings for investment purposes, of the Fund will be invested in equity securities.

The Fund attempts to invest all, or substantially all, of its assets in the common stocks that make up the Index. The Fund expects to use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index, but may, when the adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole.

Strategy Portfolio Concentration [Text]

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Under normal circumstances, at least 80% of the net assets, plus borrowings for investment purposes, of the Fund will be invested in equity securities.The Fund attempts to invest all, or substantially all, of its assets in the common stocks that make up the Index. The Fund expects to use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index, but may, when the adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole. To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index.

Risk [Heading]

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Principal Risks of Investing in the Fund

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund’s performance for the calendar years ended December 31. The table illustrates how the Fund’s average annual returns for the 1-year, 5-year, and 10-year periods compare with those of the Morningstar Global Markets ex-US Index and the Morningstar Global Markets ex-US Large-Mid Cap Index, each a broad measure of international equity market performance, and the blended returns of the Vident Core International Equity Index and Vident International Equity Index, the indexes tracked by the Fund during the applicable period. The Fund’s past performance, before and after taxes, does not necessarily indicate how it will perform in the future. Updated performance information is available on the Fund’s website at www.videntam.com.

Performance Information Illustrates Variability of Returns [Text]

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The following performance information indicates some of the risks of investing in the Fund.

Performance Availability Website Address [Text]

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www.videntam.com

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance, before and after taxes, does not necessarily indicate how it will perform in the future.

Bar Chart [Heading]

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Calendar Year Total Returns

Bar Chart Closing [Text Block]

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For the year-to-date period ended September 30, 2024, the Fund’s total return was 12.63%. During the period of time shown in the bar chart, the Fund’s highest quarterly return was 21.75% for the quarter ended December 31, 2020, and the lowest quarterly return was -32.08% for the quarter ended March 31, 2020.

Year to Date Return, Label

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year-to-date period ended

Bar Chart, Year to Date Return, Date

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Sep. 30, 2024

Bar Chart, Year to Date Return

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12.63%

Highest Quarterly Return, Label

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highest quarterly return

Highest Quarterly Return, Date

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Dec. 31, 2020

Highest Quarterly Return

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21.75%

Lowest Quarterly Return, Label

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lowest quarterly return

Lowest Quarterly Return, Date

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Mar. 31, 2020

Lowest Quarterly Return

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(32.08%)

Performance Table Heading

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Average Annual Total Returns For the Periods Ended December 31, 2023

Performance Table Uses Highest Federal Rate

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Performance Table Not Relevant to Tax Deferred

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After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account (“IRA”) or other tax-advantaged accounts.

Performance Table Explanation after Tax Higher

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Performance Table Footnotes

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Effective January 6, 2016, the Fund’s investment objective changed to track the performance, before fees and expenses, of the Vident Core International Equity Index. Prior to January 6, 2016, the Fund’s investment objective was to track the price and total return performance, before fees and expenses, of the Vident International Equity Index. Performance shown for periods prior to January 6, 2016, is that of the Vident International Equity Index.

Performance Table Closing [Text Block]

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Vident International Equity Strategy ETF™ | Risk Lose Money [Member]

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Vident International Equity Strategy ETF™ | Capital Controls And Sanctions Risk Member

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As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund.

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Vident International Equity Strategy ETF™ | Currency Exchange Rate Risk Member

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Capital Controls and Sanctions Risk. Economic conditions, such as volatile currency exchange rates and interest rates, political events, military action and other conditions may, without prior warning, lead to foreign government intervention (including intervention by the U.S. government with respect to foreign governments, economic sectors, foreign companies and related securities and interests) and the imposition of capital controls and/or sanctions, which may also include retaliatory actions of one government against another government, such as seizure of assets. Capital controls and/or sanctions include the prohibition of, or restrictions on, the ability to transfer currency, securities or other assets. Capital controls and/or sanctions may also impact the ability of the Fund to buy, sell or otherwise transfer securities or currency, negatively impact the value and/or liquidity of such instruments, adversely affect the trading market and price for Shares, and cause the Fund to decline in value.

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Vident International Equity Strategy ETF™ | Emerging Markets Risk Member

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Currency Exchange Rate Risk. The Fund may invest a relatively large percentage of its assets in investments denominated in non-U.S. currencies or in securities that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investment and the value of your Shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

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Vident International Equity Strategy ETF™ | Equity Market Risk Member

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Emerging Markets Risk. The Fund may invest in companies organized in emerging market nations. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments or investments in more developed international markets. Such conditions may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares and cause the Fund to decline in value.

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Vident International Equity Strategy ETF™ | ETF Risks Member

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Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers. In addition, local, regional or global events such as war, including Russia’s invasion of Ukraine, acts of terrorism, spread of infectious diseases or other public health issues (such as the global pandemic caused by the COVID-19 virus), recessions, rising inflation, or other events could have a significant negative impact on the Fund and its investments. Such events may affect certain geographic regions, countries, sectors and industries more significantly than others. Such events could adversely affect the prices and liquidity of the Fund’s portfolio securities or other instruments and could result in disruptions in the trading markets.

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Vident International Equity Strategy ETF™ | ETF Risks Member, Authorized Participants, Market Makers, And Liquidity Providers Concentration Risk Member

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ETF Risks. The Fund is an ETF, and, as a result of an ETF’s structure, it is exposed to the following risks:

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Vident International Equity Strategy ETF™ | ETF Risks Member, Costs Of Buying Or Selling Shares Member

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Vident International Equity Strategy ETF™ | ETF Risks Member, Shares May Trade At Prices Other Than NAV Member

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Vident International Equity Strategy ETF™ | ETF Risks Member, Trading Risk Member

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Vident International Equity Strategy ETF™ | Foreign Securities Risk Member

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Vident International Equity Strategy ETF™ | Geographic Investment Risk Member

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Foreign Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

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Vident International Equity Strategy ETF™ | Geopolitical Risk Member

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Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

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Vident International Equity Strategy ETF™ | Large-Capitalization Investing Risk Member

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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.

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Vident International Equity Strategy ETF™ | Mid-Capitalization Investing Member

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Vident International Equity Strategy ETF™ | Passive Investment Risk Member

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Vident International Equity Strategy ETF™ | Sector Risk Member

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Vident International Equity Strategy ETF™ | Sector Risk Member, Financials Sector Risk Member

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smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

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Vident International Equity Strategy ETF™ | Sector Risk Member, Consumer Discretionary Sector Risk Member

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Financials Sector Risk. This sector, which includes banks, insurance companies, and financial service firms, can be significantly affected by changes in interest rates, government regulation, the rate of defaults on corporate, consumer and government debt, the availability and cost of capital, and fallout from the housing and sub-prime mortgage crisis. Banks, in particular, are subject to volatile interest rates, severe price competition, and extensive government oversight and regulation, which may limit certain economic activities available to banks, impact their fees and overall profitability, and establish capital maintenance requirements. In addition, banks may have concentrated portfolios of loans or investments that make them vulnerable to economic conditions that affect that industry. Insurance companies are subject to similar risks as banks, including adverse economic conditions, changes in interest rates, increased competition and government regulation, but insurance companies are more at risk from changes in tax law, government imposed premium rate caps, and catastrophic events, such as earthquakes, floods, hurricanes and terrorist acts. This sector has experienced significant losses in the recent past, and the impact of higher interest rates, 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. In recent years, cyber attacks and technology malfunctions and failures have become increasingly frequent in the financial sector and have caused significant losses.

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Vident International Equity Strategy ETF™ | Sector Risk Member, Industrials Sector Risk Member

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Vident International Equity Strategy ETF™ | Sector Risk Member, Information Technology Sector Risk Member

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Vident International Equity Strategy ETF™ | Small-Capitalization Investing Member

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Vident International Equity Strategy ETF™ | Tracking Error Risk Member

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Vident International Equity Strategy ETF™ | Morningstar Global Markets ex-US Index (reflects no deduction for fees, expenses or taxes)

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

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(reflects no deduction for fees, expenses, or taxes)

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Morningstar Global Markets ex-US Index(reflects no deduction for fees, expenses, or taxes)

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15.59%

rr_AverageAnnualReturnYear05

7.27%

Vident International Equity Strategy ETF™ | Morningstar Global Markets ex-US Large-Mid Index (reflects no deduction for fees, expenses, or taxes)

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4.28%

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

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(reflects no deduction for fees, expenses, or taxes)

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Morningstar Global Markets ex-US Large-Mid Cap Index(reflects no deduction for fees, expenses, or taxes)

rr_AverageAnnualReturnYear01

15.76%

rr_AverageAnnualReturnYear05

7.34%

Vident International Equity Strategy ETF™ | Vident Core International Equity Index/Vident International Equity Index (reflects no deduction for fees, expenses, or taxes)

rr_AverageAnnualReturnYear10

4.09%

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

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(reflects no deduction for fees, expenses, or taxes)

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Vident Core International Equity Index/Vident International Equity Index1(reflects no deduction for fees, expenses, or taxes)

^[3]

rr_AverageAnnualReturnYear01

20.67%

^[3]

rr_AverageAnnualReturnYear05

7.11%

^[3]

Vident International Equity Strategy ETF™ | Vident International Equity Strategy ETF™

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4.37%

^[3]

Management Fees (as a percentage of Assets)

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Trading Symbol

dei_TradingSymbol

VIDI

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0.61%

Distribution and Service (12b-1) Fees

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none

Other Expenses (as a percentage of Assets):

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none

Expenses (as a percentage of Assets)

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0.61%

Expense Example, with Redemption, 1 Year

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$ 62

Expense Example, with Redemption, 3 Years

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195

Expense Example, with Redemption, 5 Years

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340

Expense Example, with Redemption, 10 Years

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762

Expense Example, No Redemption, 1 Year

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Expense Example, No Redemption, 3 Years

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195

Expense Example, No Redemption, 5 Years

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340

Expense Example, No Redemption, 10 Years

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$ 762

Annual Return 2014

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(2.16%)

Annual Return 2015

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(10.78%)

Annual Return 2016

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8.53%

Annual Return 2017

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32.87%

Annual Return 2018

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(17.32%)

Annual Return 2019

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15.24%

Annual Return 2020

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1.78%

Annual Return 2021

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11.68%

Annual Return 2022

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(13.90%)

Annual Return 2023

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18.28%

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Return Before Taxes

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18.28%

rr_AverageAnnualReturnYear05

5.93%

Vident International Equity Strategy ETF™ | Vident International Equity Strategy ETF™ | After Taxes on Distributions

rr_AverageAnnualReturnYear10

3.33%

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Return After Taxes on Distributions

rr_AverageAnnualReturnYear01

17.43%

rr_AverageAnnualReturnYear05

5.11%

Vident International Equity Strategy ETF™ | Vident International Equity Strategy ETF™ | After Taxes on Distributions and Sales

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2.78%

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Return After Taxes on Distributions and Sale of Shares

rr_AverageAnnualReturnYear01

11.93%

rr_AverageAnnualReturnYear05

4.74%