rr_ProspectusLineItems

dei_DocumentPeriodEndDate

Oct. 31, 2019

Entity Central Index Key

dei_EntityCentralIndexKey

0001318342

Entity Inv Company Type

dei_EntityInvCompanyType

N-1A

Document Effective Date

dei_DocumentEffectiveDate

Mar. 01, 2020

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION – 361 MANAGED FUTURES STRATEGY FUND

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The investment objective of the 361 Managed Futures Strategy Fund (the "Managed Futures Strategy Fund" or "Fund") is to seek positive absolute returns that have a low correlation to the returns of broad stock and bond markets.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 28% of the average value of its portfolio.

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

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The total annual fund operating expenses and total annual fund operating expenses after fees waived do not correlate to the ratio of expenses to average net assets appearing in the financial highlights table, which reflects only the operating expenses of the Fund and does not include acquired fund fees and expenses.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.

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

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

In pursuing the Fund's investment objective, 361 Capital, LLC ("361" or the "Advisor"), the Fund's advisor, employs a set of quantitative models to make investment decisions. Using a combination of market inputs, these models systematically identify when to purchase and sell specific investments for the Fund. The Advisor uses these models for the purpose of seeking to achieve favorable returns for the Fund from short-term movements in various U.S. and foreign markets. The Advisor may also use other quantitative models that focus on longer term market trends rather than on identifying short-term purchase and sale opportunities. The Advisor may also base purchase and sale decisions for the Fund on its judgment regarding various market and economic factors rather than its quantitative models.

In pursuing its investment objective, the Fund will primarily seek to establish both long and short positions in futures contracts on various U.S. and foreign equity indices. However, the Advisor's quantitative models will seek to identify periods during which the Fund should not enter into futures contracts. Accordingly, there will be significant periods of time during which the Fund will not hold any long or short futures positions. The Fund will be required to use a portion of its assets as margin for the Fund's futures positions. The amount of margin will be based on the notional value of the futures contracts held by the Fund. The Advisor allocates the Fund's assets not invested in futures or used as margin to a fixed income strategy that invests primarily in investment grade fixed income securities in order to generate interest income. These investments may include collateralized mortgage obligations, which are a type of mortgage-backed security, and other types of asset-backed securities. The Advisor delegates management of the Fund's fixed income strategy portfolio to Federated Investment Management Company ("Federated" or the "Sub-Advisor"). The Fund's overall portfolio duration is expected to be less than one year with a weighted average maturity of less than two years.

The Fund may hold fixed income securities and liquid money market instruments during periods when the Fund is already invested in futures positions, when the Fund is not invested in futures positions, or as needed to comply with current SEC guidance relating to asset coverage for derivatives investments held by investment companies. As a result, a substantial portion of the Fund's portfolio may be invested in instruments other than futures contracts. While those other investments may contribute to the Fund's performance, the Advisor expects that over time a majority of the Fund's performance will be attributable to the Fund's futures positions.

The Fund may also write put and call options and purchase put and call options on futures, securities indices and shares of ETFs. The Fund may purchase or write options in combination with each other (i.e., simultaneously writing call options and purchasing put options) to adjust the risk and return of its overall investment positions. Futures contracts and put and call options are among the types of instruments commonly referred to as derivatives.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Risk is inherent in all investing. A summary description of certain principal risks of investing in the Fund is set forth below. Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money. There can be no assurance that the Fund will achieve its investment objective.

Futures risk. The Fund's use of futures contracts (and related options) expose the Fund to leverage and tracking risks because a small investment in futures contracts may produce large losses and futures contracts may not be perfect substitutes for securities. The value of a futures contract tends to increase and decrease in correlation with the value of the underlying instrument. Risks of futures contracts may arise from an imperfect correlation between movements in the price of the futures and the price of the underlying instrument. The Fund's use of futures contracts (and related options) exposes the Fund to leverage risk because of the small margin requirements relative to the value of the futures contract. A relatively small market movement will have a proportionately larger impact on the funds that the Fund has deposited or will have to deposit with a broker to maintain its futures position. Leverage can lead to large losses as well as gains. While futures contracts are generally liquid instruments, under certain market conditions they may become illiquid. Futures exchanges may impose daily or intraday price change limits and/or limit the volume of trading. Additionally, government regulation may further reduce liquidity through similar trading restrictions. As a result, the Fund may be unable to close out its futures contracts at a time that is advantageous. The price of futures can be highly volatile; using them could lower total return, and the potential loss from futures could exceed the Fund's initial investment in such contracts.

Derivatives risk. Derivatives include instruments and contracts that are based on and valued in relation to one or more underlying securities, financial benchmarks, indices, or other reference obligations or measures of value. Major types of derivatives include futures, options, swaps and forward contracts. Using derivatives exposes the Fund to additional or heightened risks, including leverage risk, liquidity risk, valuation risk, market risk, counterparty risk, and credit risk. Derivatives transactions can be highly illiquid and difficult to unwind or value, they can increase Fund volatility, and changes in the value of a derivative held by the Fund may not correlate with the value of the underlying instrument or the Fund's other investments. Many of the risks applicable to trading the instruments underlying derivatives are also applicable to derivatives trading. However, derivatives are subject to additional risks such as operational risk, including settlement issues, and legal risk, including that underlying documentation is incomplete or ambiguous. For derivatives that are required to be cleared by a regulated clearinghouse, other risks may arise from the Fund's relationship with a brokerage firm through which it submits derivatives trades for clearing, including in some cases from other clearing customers of the brokerage firm.

Fixed income securities risk. The prices of fixed income securities respond to economic developments, particularly interest rate changes, as well as to changes in an issuer's credit rating or market perceptions about the creditworthiness of an issuer. Generally fixed income securities decrease in value if interest rates rise and increase in value if interest rates fall, and longer-term and lower rated securities are more volatile than shorter-term and higher rated securities. Recent and potential future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates.

Mortgage-backed and asset-backed securities risk. Mortgage-backed and asset-backed securities represent interests in "pools" of mortgages or other assets, including consumer loans or receivables held in trust. Mortgage-backed securities are subject to "prepayment risk" (the risk that borrowers will repay a loan more quickly in periods of falling interest rates) and "extension risk" (the risk that borrowers will repay a loan more slowly in periods of rising interest rates). If the Fund invests in mortgage-backed or asset-backed securities that are subordinated to other interests in the same pool, the Fund may only receive payments after the pool's obligations to other investors have been satisfied. An unexpectedly high rate of defaults on the assets held by a pool may limit substantially the pool's ability to make payments of principal or interest to the Fund, reducing the values of those securities or in some cases rendering them worthless. The risk of such defaults is generally higher in the case of mortgage pools that include so-called "subprime" mortgages. Collateralized mortgage obligations generally entail greater market, prepayment and liquidity risk than other mortgage-backed securities. For example, their prices are more volatile and their trading market may be more limited.

Market risk. The market price of a security or instrument may decline, sometimes rapidly or unpredictably, due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic or political conditions, throughout the world, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The market value of a security or instrument also may decline because of factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry.

ETF and mutual fund risk. Investing in ETFs or mutual funds (including other funds managed by the Advisor or Sub-Advisor) will provide the fund with exposure to the risks of owning the underlying securities the ETFs or mutual funds hold. Shares of ETFs typically trade on securities exchanges and may at times trade at a premium or discount to their net asset values. In addition, an ETF or a mutual fund, if the mutual fund is an index fund, may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF or mutual fund, the temporary unavailability of certain index securities in the secondary market, or discrepancies between the ETF or mutual fund and the index with respect to the weighting of securities or the number of securities held. It may be more expensive for the Fund to invest in an ETF or mutual fund than to own the portfolio securities of these investment vehicles directly. Investing in ETFs and mutual funds, which are investment companies, involves duplication of advisory fees and certain other expenses. The Fund will pay brokerage commissions in connection with the purchase and sale of shares of ETFs.

Management and strategy risk. The value of your investment depends on the judgment of the Advisor about the quality, relative yield, value or market trends affecting a particular security, industry, sector or region, which may prove to be incorrect.

Government intervention and regulatory changes risk. In response to the global financial crisis that began in 2008, which caused a significant decline in the value and liquidity of many securities and unprecedented volatility in the markets, the U.S. government and the Federal Reserve, as well as certain foreign governments and their central banks took steps to support financial markets, including by keeping interest rates low. The Federal Reserve has reduced its market support activities and has raised interest rates. These policy changes may expose fixed-income and related markets to heightened volatility and may reduce liquidity for certain Fund investments, which could cause the value of the Fund's investments and share price to decline. In addition, legal and regulatory changes could occur that may adversely affect the Fund, its investments, and its ability to pursue its investment strategies and/or increase the costs of implementing such strategies. For example, changes in regulation related to the Fund's use of derivatives and related instruments could potentially limit or impact the Fund's ability to invest in derivatives, limit the Fund's ability to employ certain strategies that use derivatives and/or adversely affect the value of derivatives and the Fund's performance. The Fund also may be adversely affected by changes in the enforcement or interpretation of existing statutes and rules by governmental regulatory authorities or self-regulatory organizations.

Asset segregation risk. As a series of an investment company registered with the SEC, the Fund must segregate liquid assets, or engage in other measures, to "cover" open positions with respect to certain kinds of derivatives and short sales. The Fund may incur losses on derivatives and other leveraged investments (including the entire amount of the Fund's investment in such investments) even if they are covered.

Leveraging risk. Certain Fund transactions, including entering into futures contracts and taking short positions in financial instruments, may give rise to a form of leverage. Leverage can magnify the effects of changes in the value of the Fund's investments and make the Fund more volatile. Leverage creates a risk of loss of value on a larger pool of assets than the Fund would otherwise have had, potentially resulting in the loss of all assets. The Fund may also have to sell assets at inopportune times to satisfy its obligations in connection with such transactions.

Short sales risk. In connection with a short sale of a security or other instrument, the Fund is subject to the risk that instead of declining, the price of the security or other instrument sold short will rise. If the price of the security or other instrument sold short increases between the date of the short sale and the date on which the Fund replaces the security or other instrument borrowed to make the short sale, the Fund will experience a loss, which is theoretically unlimited since there is a theoretically unlimited potential for the market price of a security or other instrument sold short to increase. Shorting options or futures may have an imperfect correlation to the assets held by the Fund and may not adequately protect against losses in or may result in greater losses for the Fund's portfolio.

LIBOR risk. Many financial instruments, financings or other transactions to which the Fund may be a party use or may use a floating rate based on the London Interbank Offered Rate ("LIBOR"). In July 2017, the Financial Conduct Authority, the United Kingdom's financial regulatory body, announced that after 2021 it will cease its active encouragement of banks to provide the quotations needed to sustain LIBOR. The future publication and utilization of LIBOR, and the nature of any replacement rate, is uncertain. Therefore, the potential effect of a transition away from LIBOR on the Fund or the financial instruments in which the Fund invests cannot yet be determined.

Cybersecurity risk. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data (including private shareholder information), or proprietary information, or cause the Fund, the Advisor, the Sub-Advisor, and/or other service providers (including custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality. In an extreme case, a shareholder's ability to exchange or redeem Fund shares may be affected. Issuers of securities in which the Fund invests are also subject to cybersecurity risks, and the value of those securities could decline if the issuers experience cybersecurity incidents.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for Class I shares and by showing how the average annual total returns of each class of the Fund compare with the average annual total returns of a broad-based market index.

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Class I
Highest Calendar Quarter Return at NAV	8.15%	Quarter Ended 06/30/2012
Lowest Calendar Quarter Return at NAV	(5.05)%	Quarter Ended 09/30/2015

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Class I Shares only and after-tax returns for classes other than Class I will vary from returns shown for Class I.

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee if redeemed within 90 days of purchase

rr_RedemptionFee

none

Overnight check delivery fee

imst_OvernightCheckDeliveryFee

25

Management fees

rr_ManagementFeesOverAssets

1.59%

Shareholder service fee

rr_Component1OtherExpensesOverAssets

0.12%

^[1]

Other expenses

rr_OtherExpensesOverAssets

0.32%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.23%

^[2]

Three Years

rr_ExpenseExampleYear03

697

Ten Years

rr_ExpenseExampleYear10

$ 2,565

5 Years

rr_AverageAnnualReturnYear05

1.43%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 20, 2011

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee if redeemed within 90 days of purchase

rr_RedemptionFee

none

Overnight check delivery fee

imst_OvernightCheckDeliveryFee

25

Management fees

rr_ManagementFeesOverAssets

1.59%

Shareholder service fee

rr_Component1OtherExpensesOverAssets

0.12%

^[1]

Other expenses

rr_OtherExpensesOverAssets

0.32%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.98%

^[2]

Three Years

rr_ExpenseExampleYear03

621

Ten Years

rr_ExpenseExampleYear10

$ 2,306

Annual Return 2013

rr_AnnualReturn2013

2.97%

Annual Return 2015

rr_AnnualReturn2015

(0.36%)

Annual Return 2017

rr_AnnualReturn2017

5.97%

Annual Return 2019

rr_AnnualReturn2019

6.38%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Calendar Quarter Return at NAV

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(5.05%)

5 Years

rr_AverageAnnualReturnYear05

1.69%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 20, 2011

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

1.58%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 20, 2011

^[3]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

1.25%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 20, 2011

^[3]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

1.05%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 20, 2011

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2021

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Principal Risks of Investing

Risk Lose Money [Text]

rr_RiskLoseMoney

Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for Class I shares and by showing how the average annual total returns of each class of the Fund compare with the average annual total returns of a broad-based market index. The Fund's past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. The bar chart shows the performance of the Fund's Class I shares. Investor Class shares' performance would be lower than the Fund's Class I shares because of the higher expenses paid by Investor Class shares. Updated performance information is available on the Fund's website at www.361funds.com.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.361funds.com

Bar Chart [Heading]

rr_BarChartHeading

Calendar Year Total Return (before taxes) for Class I Shares For each calendar year at NAV

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for periods ended December 31, 2019)

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after–tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Trading Symbol

dei_TradingSymbol

AGFQX

Maximum deferred sales charge (load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Wire fee

imst_WireFee

20

Retirement account fees (annual maintenance fee)

rr_ShareholderFeeOther

$ 15

Distribution and service (Rule 12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Dividends and interest expense on short sales

rr_Component2OtherExpensesOverAssets

0.04%

Other expenses

rr_OtherExpensesOverAssets

0.57%

Fees waived and/or expenses reimbursed

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[4]

One Year

rr_ExpenseExampleYear01

$ 206

Five Years

rr_ExpenseExampleYear05

1,110

1 Year

rr_AverageAnnualReturnYear01

4.51%

Since Inception

rr_AverageAnnualReturnSinceInception

2.75%

Trading Symbol

dei_TradingSymbol

AGFZX

Maximum deferred sales charge (load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Wire fee

imst_WireFee

20

Retirement account fees (annual maintenance fee)

rr_ShareholderFeeOther

$ 15

Distribution and service (Rule 12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividends and interest expense on short sales

rr_Component2OtherExpensesOverAssets

0.04%

Other expenses

rr_OtherExpensesOverAssets

0.57%

Fees waived and/or expenses reimbursed

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[4]

One Year

rr_ExpenseExampleYear01

$ 181

Five Years

rr_ExpenseExampleYear05

981

Annual Return 2015

rr_AnnualReturn2015

2.69%

Annual Return 2017

rr_AnnualReturn2017

8.28%

Annual Return 2019

rr_AnnualReturn2019

4.71%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2016

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Calendar Quarter Return at NAV

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.80%)

5 Years

rr_AverageAnnualReturnYear05

4.26%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 12, 2014

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

3.78%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 12, 2014

^[3]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

3.18%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 12, 2014

^[3]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

1.05%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 12, 2014

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objectives

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2021

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 332% of the average value of its portfolio.

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

The expense information in the table has been restated to reflect the current expense limitation agreement.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The example reflects the Fund's contractual fee waiver and/or expense reimbursement only for the term of the contractual fee waiver and/or expense reimbursement.

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

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

In pursuing its investment objectives, the Fund seeks to invest at least 80% of the value of its net assets (which include borrowings for investment purposes) in equity securities such as common stocks, warrants and rights of issuers that are organized in the United States and the securities of which are principally traded on a major U.S. exchange. The Fund employs a strategy of taking long and short positions in equity securities publicly traded in the United States. The Fund buys securities "long" that Wells Capital Management, Inc. ("WellsCap" or the "Sub-Advisor"), the Fund's sub-advisor, believes will outperform the equity market, and sells securities "short" that the Sub-Advisor believes will underperform the equity market. The Fund's long-short exposure will vary over time based on the Sub-Advisor's assessments of market conditions and other factors. The Fund may invest in equity securities of issuers in all market capitalization ranges without limitation. The Sub-Advisor anticipates that, in general, the net long exposure of the Fund will not exceed 100% and the Fund will not have a net short exposure. The Fund's investment strategy involves active and frequent trading.

The Fund's strategy seeks to provide favorable performance while seeking to reduce certain risks relative to a portfolio comprised of only long positions in the same or substantially similar securities, but there can be no guarantee that its strategy will be successful in this regard.

The Fund may also invest from time to time in futures, swaps and options contracts on securities, and securities indices. The Fund may also enter into options on futures contracts. The Fund may purchase or write options in combination with each other (i.e., simultaneously writing call options and purchasing put options) to seek to adjust the risk and return of its overall investment positions. The Fund may employ the types of derivatives referenced above in order to obtain short or long exposures to securities. The Fund will not count its derivatives positions, including futures, swaps and option positions, for purposes of determining whether it holds at least 80% of the value of its net assets (including investment-related borrowings) in equity securities.

The Fund may invest in exchange-traded funds ("ETFs") designed to track U.S. equity securities indices to manage the Fund's cash holdings and gain exposure to the types of securities in which the Fund primarily invests. The Fund will count its ETF positions for purposes of determining whether it holds at least 80% of the value of its net assets (including investment-related borrowings) in equity securities of U.S. issuers.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Risk is inherent in all investing. A summary description of certain principal risks of investing in the Fund is set forth below. Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money. There can be no assurance that the Fund will achieve its investment objectives.

Equity risk. The value of the equity securities held by the Fund may fall due to general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests.

Market risk. The market price of a security or instrument may decline, sometimes rapidly or unpredictably, due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic or political conditions throughout the world, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The market value of a security or instrument also may decline because of factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry.

Short sales risk. In connection with a short sale of a security or other instrument, the Fund is subject to the risk that instead of declining, the price of the security or other instrument sold short will rise. If the price of the security or other instrument sold short increases between the date of the short sale and the date on which the Fund replaces the security or other instrument borrowed to make the short sale, the Fund will experience a loss, which is theoretically unlimited since there is a theoretically unlimited potential for the market price of a security or other instrument sold short to increase. Shorting options or futures may have an imperfect correlation to the assets held by the Fund and may not adequately protect against losses in or may result in greater losses for the Fund's portfolio.

Leveraging risk. Certain Fund transactions, including entering into futures contracts and taking short positions in financial instruments, may give rise to a form of leverage. Leverage can magnify the effects of changes in the value of the Fund's investments and make the Fund more volatile. Leverage creates a risk of loss of value on a larger pool of assets than the Fund would otherwise have had, potentially resulting in the loss of all assets. The Fund may also have to sell assets at inopportune times to satisfy its obligations in connection with such transactions.

Market capitalization risk. Larger, more established companies may be unable to attain the high growth rates of successful, smaller companies during periods of economic expansion. The securities of small-capitalization and mid-capitalization companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger, more established companies or market averages in general. In addition, such companies typically are more likely to be adversely affected than large capitalization companies by changes in earning results, business prospects, investor expectations or poor economic or market conditions.

Asset segregation risk. As a series of an investment company registered with the SEC, the Fund must segregate liquid assets, or engage in other measures to "cover" open positions with respect to certain kinds of derivatives and short sales. The Fund may incur losses on derivatives and other leveraged investments (including the entire amount of the Fund's investment in such investments) even if they are covered.

Management and strategy risk. The value of your investment depends on the judgment of the Fund's advisor about the quality, relative yield, value or market trends affecting a particular security, industry, sector or region, which may prove to be incorrect.

Market sector risk. The Fund's investment strategy may result in significant over or under exposure to certain industries or market sectors, which may cause the Fund's performance to be more or less sensitive to developments affecting those industries or sectors. For example, as of October 31, 2019, 33.2% of the Fund's assets were invested in the consumer, non-cyclical sector. Companies in the consumer sector may be adversely impacted by fluctuations in supply and demand, changes in the global economy, consumer spending, competition, demographics and consumer preferences, and production spending. Companies in the consumer sector are also affected by changes in government regulation, global economic, environmental and political events, economic conditions and the depletion of resources.

Portfolio turnover risk. Active and frequent trading of the Fund's portfolio securities may lead to higher transaction costs and may result in a greater number of taxable transactions than would otherwise be the case, which could negatively affect the Fund's performance. A high rate of portfolio turnover is 100% or more.

Warrants and rights risk. Warrants and rights may lack a liquid secondary market for resale. The prices of warrants and rights may fluctuate as a result of speculation or other factors. Warrants and rights can provide a greater potential for profit or loss than an equivalent investment in the underlying security. Prices of warrants and rights do not necessarily move in tandem with the prices of their underlying securities and are highly volatile and speculative investments. If a warrant or right expires without being exercised, the Fund will lose any amount paid for the warrant or right.

Derivatives risk. Derivatives include instruments and contracts that are based on and valued in relation to one or more underlying securities, financial benchmarks, indices, or other reference obligations or measures of value. Major types of derivatives include futures, options, swaps and forward contracts. Using derivatives exposes the Fund to additional or heightened risks, including leverage risk, liquidity risk, valuation risk, market risk, counterparty risk, and credit risk. Derivatives transactions can be highly illiquid and difficult to unwind or value, they can increase Fund volatility, and changes in the value of a derivative held by the Fund may not correlate with the value of the underlying instrument or the Fund's other investments. Many of the risks applicable to trading the instruments underlying derivatives are also applicable to derivatives trading. However, derivatives are subject to additional risks such as operational risk, including settlement issues, and legal risk, including that underlying documentation is incomplete or ambiguous. These additional risks include, but are not limited to, illiquidity risk and counterparty credit risk. For derivatives that are required to be cleared by a regulated clearinghouse, other risks may arise from the Fund's relationship with a brokerage firm through which it submits derivatives trades for clearing, including in some cases from other clearing customers of the brokerage firm.

Cybersecurity risk. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data (including private shareholder information), or proprietary information, or cause the Fund, the Fund's advisor, the Sub-Advisor, and/or other service providers (including custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality. In an extreme case, a shareholder's ability to exchange or redeem Fund shares may be affected. Issuers of securities in which the Fund invests are also subject to cybersecurity risks, and the value of those securities could decline if the issuers experience cybersecurity incidents.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for Class Y shares and by showing how the average annual total returns of each class of the Fund compare with the average annual total returns of a broad-based market index.

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Class Y
Highest Calendar Quarter Return at NAV	9.29%	Quarter Ended 03/31/2019
Lowest Calendar Quarter Return at NAV	(11.25)%	Quarter Ended 12/31/2018

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Class Y Shares only and after-tax returns for classes other than Class Y will vary from returns shown for Class Y.

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Overnight check delivery fee

imst_OvernightCheckDeliveryFee

25

Management fees

rr_ManagementFeesOverAssets

1.10%

^[5]

Shareholder service fee

rr_Component1OtherExpensesOverAssets

0.15%

^[1],[5]

All other expenses

rr_Component3OtherExpensesOverAssets

0.52%

^[5]

Total annual fund operating expenses

rr_ExpensesOverAssets

3.06%

^[5]

Total annual fund operating expenses after waiving fees and/or reimbursing expenses

rr_NetExpensesOverAssets

2.83%

^[5],[6]

Three Years

rr_ExpenseExampleYear03

924

Ten Years

rr_ExpenseExampleYear10

$ 3,358

3 Years

imst_AverageAnnualReturnYear03

5.63%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2016

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Overnight check delivery fee

imst_OvernightCheckDeliveryFee

25

Management fees

rr_ManagementFeesOverAssets

1.10%

^[5]

Shareholder service fee

rr_Component1OtherExpensesOverAssets

0.11%

^[1],[5]

All other expenses

rr_Component3OtherExpensesOverAssets

0.52%

^[5]

Total annual fund operating expenses

rr_ExpensesOverAssets

2.77%

^[5]

Total annual fund operating expenses after waiving fees and/or reimbursing expenses

rr_NetExpensesOverAssets

2.54%

^[5],[6]

Three Years

rr_ExpenseExampleYear03

837

Ten Years

rr_ExpenseExampleYear10

$ 3,083

3 Years

imst_AverageAnnualReturnYear03

5.94%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2016

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Overnight check delivery fee

imst_OvernightCheckDeliveryFee

25

Management fees

rr_ManagementFeesOverAssets

1.10%

^[5]

Shareholder service fee

rr_Component1OtherExpensesOverAssets

none

^[1],[5]

All other expenses

rr_Component3OtherExpensesOverAssets

0.52%

^[5]

Total annual fund operating expenses

rr_ExpensesOverAssets

2.66%

^[5]

Total annual fund operating expenses after waiving fees and/or reimbursing expenses

rr_NetExpensesOverAssets

2.43%

^[5],[6]

Three Years

rr_ExpenseExampleYear03

805

Ten Years

rr_ExpenseExampleYear10

$ 2,976

Annual Return 2018

rr_AnnualReturn2018

(4.87%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Calendar Quarter Return at NAV

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.29%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2018

1 Year

rr_AverageAnnualReturnYear01

12.39%

Since Inception

rr_AverageAnnualReturnSinceInception

5.03%

1 Year

rr_AverageAnnualReturnYear01

11.33%

^[7]

Since Inception

rr_AverageAnnualReturnSinceInception

3.87%

^[7]

1 Year

rr_AverageAnnualReturnYear01

8.08%

^[7]

Since Inception

rr_AverageAnnualReturnSinceInception

3.66%

^[7]

1 Year

rr_AverageAnnualReturnYear01

31.43%

Since Inception

rr_AverageAnnualReturnSinceInception

14.94%

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION – 361 GLOBAL LONG/SHORT EQUITY FUND

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The investment objective of the 361 Global Long/Short Equity Fund (the "Global Long/Short Equity Fund" or "Fund") is to seek to achieve long-term capital appreciation. The Fund also seeks to preserve capital in down markets.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

220.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Principal Risks of Investing

Risk Lose Money [Text]

rr_RiskLoseMoney

Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for Class I shares and by showing how the average annual total returns of each class of the Fund compare with the average annual total returns of a broad-based market index. The Fund's past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. The bar chart shows the performance of the Fund's Class I shares. Investor Class shares' performance would be lower than the Fund's Class I shares because of the higher expenses paid by Investor Class shares. Class Y shares' performance would be higher than the Fund's Class I shares because of the lower expenses paid by Class Y shares. Updated performance information is available on the Fund's website at www.361funds.com.

The Fund commenced operations on December 12, 2014, after the reorganization of Analytic Global Long/Short Equity Fund, L.P., a limited partnership which commenced operations on January 6, 2014 (the "Predecessor Account"), into the Fund. The Fund's objectives, policies, guidelines and restrictions are, in all material respects, equivalent to those of the Predecessor Account. The Predecessor Account was not registered under the Investment Company Act of 1940, as amended (the "1940 Act") and therefore was not subject to certain restrictions imposed by the 1940 Act on registered investment companies and by the Internal Revenue Code of 1986 on regulated investment companies. The Fund's performance information prior to December 12, 2014 are those of the Predecessor Account.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.361funds.com

Bar Chart [Heading]

rr_BarChartHeading

Calendar Year Total Return (before taxes) for Class I Shares For each calendar year at NAV

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for periods ended December 31, 2019)

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after–tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Trading Symbol

dei_TradingSymbol

AGAQX

Maximum deferred sales charge (load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Wire fee

imst_WireFee

$ 20

Retirement account fees (annual maintenance fee)

rr_ShareholderFeeOther

$ 15

Distribution and service (Rule 12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

^[5]

Dividends and interest expense on short sales

rr_Component2OtherExpensesOverAssets

0.92%

^[5]

Other expenses

rr_OtherExpensesOverAssets

1.24%

^[5]

Fees waived and/or expenses reimbursed

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[5],[6]

One Year

rr_ExpenseExampleYear01

$ 274

Five Years

rr_ExpenseExampleYear05

1,447

1 Year

rr_AverageAnnualReturnYear01

8.15%

Since Inception

rr_AverageAnnualReturnSinceInception

5.46%

Trading Symbol

dei_TradingSymbol

AGAZX

Maximum deferred sales charge (load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Wire fee

imst_WireFee

$ 20

Retirement account fees (annual maintenance fee)

rr_ShareholderFeeOther

$ 15

Distribution and service (Rule 12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

^[5]

Dividends and interest expense on short sales

rr_Component2OtherExpensesOverAssets

0.92%

^[5]

Other expenses

rr_OtherExpensesOverAssets

1.17%

^[5]

Fees waived and/or expenses reimbursed

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[5],[6]

One Year

rr_ExpenseExampleYear01

$ 242

Five Years

rr_ExpenseExampleYear05

1,288

Annual Return 2015

rr_AnnualReturn2015

9.05%

Annual Return 2017

rr_AnnualReturn2017

15.24%

Annual Return 2019

rr_AnnualReturn2019

8.52%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2019

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Calendar Quarter Return at NAV

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(10.13%)

5 Years

rr_AverageAnnualReturnYear05

4.53%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 06, 2014

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Overnight check delivery fee

imst_OvernightCheckDeliveryFee

25

Management fees

rr_ManagementFeesOverAssets

1.25%

^[5]

Shareholder service fee

rr_Component1OtherExpensesOverAssets

none

^[5],[8]

All other expenses

rr_Component3OtherExpensesOverAssets

0.17%

^[5]

Total annual fund operating expenses

rr_ExpensesOverAssets

2.34%

^[5]

Total annual fund operating expenses after waiving fees and/or reimbursing expenses

rr_NetExpensesOverAssets

2.31%

^[5],[6]

Three Years

rr_ExpenseExampleYear03

728

Ten Years

rr_ExpenseExampleYear10

$ 2,674

5 Years

rr_AverageAnnualReturnYear05

4.64%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 06, 2014

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

3.88%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 06, 2014

^[3]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

3.42%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 06, 2014

^[3]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

8.74%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 06, 2014

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2021

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 235% of the average value of its portfolio.

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

The expense information in the table has been restated to reflect the current expense limitation agreement.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The example reflects the Fund's contractual fee waiver and/or expense reimbursement only for the term of the contractual fee waiver and/or expense reimbursement.

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

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund will invest at least 80% of the value of its net assets (which include borrowings for investment purposes) in common stocks of U.S. small capitalization issuers. A company is considered to be a U.S. company if 361 Capital, LLC ("361" or the "Advisor"), the Fund's advisor, determines that the company meets one or more of the following criteria: (i) the company is organized under the laws of, or has its principal office in, the United States; (ii) the company's securities principally trade in U.S. markets; and/or (iii) the company has at least 50% of its assets or derives at least 50% of its revenue from business, in the U.S. The Advisor defines small capitalization companies as companies that, at the time of investment, have market capitalizations that are within the range of the market capitalizations of the issuers represented in the Russell 2000^® Index (the Fund's benchmark), which is a market capitalization-weighted index of the 2000 smallest companies by market capitalization in the Russell 3000^® Index. As of December 31, 2019, the Russell 2000^®Index had a weighted average market capitalization of approximately $2.5 billion and a median capitalization of $812 million, and the range of capitalization of issuers included in the Russell 2000^® Index was approximately $12.7 million to $8.3 billion. The Russell 2000^® Index is reconstituted annually so that stocks that have outgrown the Index can be removed and new entries added. The Fund's investment strategy involves active and frequent trading.

The Advisor's investment philosophy is based on the belief that future investor expectations are strongly influenced by the opinions, forecasts and announcements of perceived market experts, including Wall Street analysts and company management. The Advisor seeks to invest in companies that are likely to be the beneficiaries of future favorable earnings announcements and earnings estimate revisions.

The Fund normally holds a core position of between 75 and 150 common stocks. The number of securities held by the Fund may occasionally exceed this range, such as when the portfolio managers are accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund's portfolio is allocated to economic sectors based on a target number of positions for each of the sectors included in the universe. The target for each sector is a weight that is in proportion to the weighting of the equivalent sector in the benchmark index.

The Fund may also invest in securities of issuers that are not part of the Fund's benchmark Index. The Fund may invest in the securities of other registered investment companies, including without limitation exchange-traded funds ("ETFs") and index ETFs, as well as cash and cash equivalents. The Advisor may sell a security if inclusion of the security in the Fund's portfolio is inconsistent with the guidance generated by the Advisor's proprietary strategies.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Risk is inherent in all investing. A summary description of certain principal risks of investing in the Fund is set forth below. Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money. There can be no assurance that the Fund will achieve its investment objective.

Equity risk. The value of the equity securities held by the Fund may fall due to general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests.

Market risk. The market price of a security or instrument may decline, sometimes rapidly or unpredictably, due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic or political conditions throughout the world, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The market value of a security or instrument also may decline because of factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry.

Small-cap and mid-cap company risk. The securities of small-capitalization and mid-capitalization companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger, more established companies or market averages in general. In addition, such companies typically are more likely to be adversely affected than large capitalization companies by changes in earning results, business prospects, investor expectations or poor economic or market conditions.

Management and strategy risk. The value of your investment depends on the judgment of the Advisor about the quality, relative yield, value or market trends affecting a particular security, industry, sector or region, which may prove to be incorrect.

Market sector risk. The Fund's investment strategy may result in significant over or under exposure to certain industries or market sectors, which may cause the Fund's performance to be more or less sensitive to developments affecting those industries or sectors. For example, as of October 31, 2019, 27.9% of the Fund's assets were invested in the financial sector. Performance of companies in the financial sector may be adversely impacted by many factors, including, among others: government regulation of, or related to, the sector; governmental monetary and fiscal policies; economic, business or political conditions; credit rating downgrades; changes in interest rates; price competition; and decreased liquidity in credit markets. This sector has experienced significant losses and a high degree of volatility in the past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Portfolio turnover risk. Active and frequent trading of the Fund's portfolio securities may lead to higher transaction costs and may result in a greater number of taxable transactions than would otherwise be the case, which could negatively affect the Fund's performance. A high rate of portfolio turnover is 100% or more.

Cybersecurity risk. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data (including private shareholder information), or proprietary information, or cause the Fund, the Advisor, and/or other service providers (including custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality. In an extreme case, a shareholder's ability to exchange or redeem Fund shares may be affected. Issuers of securities in which the Fund invests are also subject to cybersecurity risks, and the value of those securities could decline if the issuers experience cybersecurity incidents.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for Class I shares and by showing how the average annual total returns of each class of the Fund compare with the average annual total returns of a broad-based market index.

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Class I
Highest Calendar Quarter Return at NAV	11.94%	Quarter Ended 03/31/2019
Lowest Calendar Quarter Return at NAV	(22.36)%	Quarter Ended 12/31/2018

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Class I Shares only and after-tax returns for classes other than Class I will vary from returns shown for Class I.

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum sales charge (load) imposed on purchases

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Overnight check delivery fee