rr_RiskReturnHeading

Aegon Emerging Markets Debt Fund

rr_ObjectivePrimaryTextBlock

The Aegon Emerging Markets Debt Fund (the “Emerging Markets Debt Fund” or the “Fund”) seeks to maximize total return, consisting of income and capital appreciation.

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may be required to pay commissions and/or other forms of compensation to a broker for transactions in Institutional Shares, which are not reflected in the table or the example below.

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

January 31, 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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in total annual Fund operating expenses or in the example, affect the Fund’s performance. For the fiscal period from June 14, 2019 (commencement of Fund operations) to September 30, 2019, the Fund’s portfolio turnover rate was 24% of the average value of its portfolio.

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

You may be required to pay commissions and/or other forms of compensation to a broker for transactions in Institutional Shares, which are not reflected in the table or the example below.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the Fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Once the Fund has completed a full calendar year of operations, a bar chart and table will be included that will provide some indication of the risks of investing in the Fund by showing the variability of the Fund’s returns and comparing the Fund’s performance to a broad measure of market performance.

rr_PerformanceAvailabilityPhone

1-833-GO-AEGON (833-462-3466)

rr_PerformancePastDoesNotIndicateFuture

Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

rr_ProspectusLineItems

rr_ManagementFeesOverAssets

0.65%

rr_OtherExpensesOverAssets

0.76%

^[1]

rr_FeeWaiverOrReimbursementOverAssets

(0.66%)

^[2]

rr_ExpenseExampleYear01

$ 77

dei_TradingSymbol

AMMVX

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements

rr_ExpensesOverAssets

1.66%

rr_NetExpensesOverAssets

1.00%

rr_ExpenseExampleYear03

$ 459

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fund Fees and Expenses

rr_OperatingExpensesCaption

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

rr_PortfolioTurnoverHeading

Portfolio Turnover

Other Expenses, New Fund, Based on Estimates [Text]

rr_PortfolioTurnoverRate

11.00%

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses are based on estimated amounts for the current fiscal year.

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 (including one year of capped expenses in each period) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in high yield securities. This investment policy may be changed by the Fund upon 60 days’ prior written notice to shareholders.

High yield securities (commonly known as “junk” bonds) are fixed- or floating-rate securities rated below BBB by Standard & Poor’s or Fitch or below Baa by Moody’s or, if unrated, determined to be of comparable quality by the Adviser. The high-yield securities in which the Fund invests are primarily corporate bonds. For purposes of the Fund’s 80% investment policy, however, high yield securities also include foreign sovereign debt, bank loans and convertible securities. The Fund may also invest in investment grade securities, common stocks, preferred stocks and cash equivalents (including bank obligations).

The Fund may invest in securities of any rating, including securities that are in default. While the Fund may invest in securities of any maturity or duration, the Adviser seeks to maintain a weighted average portfolio duration for the Fund of 36 months or less. Duration measures how changes in interest rates affect the value of a fixed income security. For example, a five-year duration means that the fixed income security will decrease in value by 5% if interest rates rise 1% and increase in value by 5% if interest rates fall 1%. The Fund may invest in securities in both developed and emerging market countries, and may invest in securities denominated in any currency, including local currencies or hard currencies (i.e., a currency that is not likely to depreciate suddenly or to fluctuate greatly in value). Emerging market countries are countries that are included in the JPMorgan Emerging Markets Bond Index - Global Diversified, the JPMorgan Corporate Emerging Markets Bond Index - Diversified, the JPMorgan Emerging Local Markets Index or the JPMorgan Government Bond Index - Emerging Markets Global Diversified, as well as those countries which are not defined as a High Income Organization for Economic Cooperation and Development (“OECD”) member country by the World Bank. From time to time, the Fund may focus its investments in a particular sector, or may focus its investments in a particular country or geographic region, such as Europe.

In managing the Fund’s assets, the Adviser uses a fundamental research process that combines a global “top-down” analysis of the macroeconomic and interest rate environment and “bottom-up” research of corporate and sovereign debt, stressed and distressed securities, and other debt instruments. In the Adviser’s qualitative “top-down” approach, the Adviser analyzes various fundamental, technical, sentiment and valuation factors that affect the movement of markets and securities prices worldwide. Fundamental analysis attempts to estimate the quality of a particular security based on a variety of factors, such as: financial efficiency ratios, capital utilization, cash flow, gross margin, cost, and revenues. Technical analysis includes evaluating recent trading movements and trends to identify potential supply/demand imbalances that may impact trading prices. Sentiment analysis attempts to measure the market in terms of the attitudes of investors. Valuation analysis is a process to estimate the approximate value or worth of a security so that it can be compared to current and historical trading levels as well as to other relevant benchmarks. This “top-down” analysis assists the Adviser in analyzing portfolio risk and allocating assets among sectors, industries, and credit quality categories. In its “bottom-up” research, the Adviser considers various fundamental and other factors, such as creditworthiness and capital structure. The Adviser’s research analysts may integrate environmental, social and governance (“ESG”) factors within their analytical process alongside traditional credit analysis in an effort to determine and assess the potential economic impact of ESG issues on an issuer.

rr_RiskNarrativeTextBlock

As with all mutual funds, there is no guarantee that the Fund will achieve its investment objective. You could lose money by investing in the Fund. A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency. The principal risk factors affecting shareholders’ investments in the Fund are set forth below.

Active Management Risk — The Fund is subject to the risk that the Adviser’s judgments about the attractiveness, value, or potential appreciation of the Fund’s investments may prove to be incorrect. If the investments selected and strategies employed by the Fund fail to produce the intended results, the Fund could underperform in comparison to other funds with similar objectives and investment strategies.

Fixed Income Market Risk — The prices of the Fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. Generally, the Fund’s fixed income securities will decrease in value if interest rates rise and vice versa. In a low interest rate environment, risks associated with rising rates are heightened. Declines in dealer market-making capacity as a result of structural or regulatory changes could decrease liquidity and/or increase volatility in the fixed income markets. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. In response to these events, the Fund’s value may fluctuate and/or the Fund may experience increased redemptions from shareholders, which may impact the Fund’s liquidity or force the Fund to sell securities into a declining or illiquid market.

Interest Rate Risk — The risk that a rise in interest rates will cause a fall in the value of fixed income securities in which the Fund invests. A low interest rate environment may present greater interest rate risk, because there may be a greater likelihood of rates increasing and rates may increase more rapidly.

Credit Risk — The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation.

Extension Risk — The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security’s value.

Prepayment/Re-investment Risk — The risk that, in a declining interest rate environment, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates.

Corporate Fixed Income Securities Risk — Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers.

Below Investment Grade Securities (Junk Bonds) Risk — Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are generally more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Because these securities typically offer a higher rate of return to compensate investors for these risks, they are sometimes referred to as “high yield bonds,” but there is no guarantee that an investment in these securities will result in a high rate of return.

Distressed or Defaulted Securities Risk — Investments in defaulted securities and obligations of distressed issuers, including securities that are, or may be, involved in reorganizations or other financial restructurings, either out of court or in bankruptcy, involve substantial risks and are considered speculative. The Fund may suffer significant losses if the reorganization or restructuring is not completed as anticipated. The Fund will generally not receive interest payments on the distressed securities and may incur costs to protect its investment. Repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties.

Liquidity Risk — The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price of the security, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance.

Bank Loans Risk — With respect to bank loans, the Fund will assume the credit risk of both the borrower and the lender that is selling the participation. The Fund may also have difficulty disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid.

Equity Market Risk — The risk that stock prices will fall over short or extended periods of time.

Preferred Stock Risk — Preferred stocks are non-voting equity securities that pay a stated fixed or variable rate of return. Preferred stocks are subject to issuer-specific risks (such as credit risk) and market risks applicable generally to equity securities. The market value of preferred stocks generally decreases when interest rates rise. Preferred stocks generally are subordinated to bonds and other debt instruments in a company’s capital structure in terms of priority to corporate income and liquidation payments and therefore will be subject to greater credit risk than the company’s bonds and other debt instruments. Preferred stock may also be subject to prepayment/re-investment risk, which is discussed elsewhere in this section.

Convertible Securities Risk — The value of a convertible security is influenced by changes in interest rates (with investment value declining as interest rates increase and increasing as interest rates decline) and the credit standing of the issuer. The price of a convertible security will also normally vary in some proportion to changes in the price of the underlying common stock because of the conversion or exercise feature.

Foreign Investment/Emerging Markets Risk — The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries.

Foreign Currency Risk — As a result of the Fund’s investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Due to the Fund’s active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad.

Foreign Sovereign Debt Securities Risk — The risks that (i) the governmental entity that controls the repayment of sovereign debt may not be willing or able to repay the principal and/or interest when it becomes due because of factors such as debt service burden, political constraints, cash flow problems and other national economic factors; (ii) governments may default on their debt securities, which may require holders of such securities to participate in debt rescheduling or additional lending to defaulting governments; and (iii) there is no bankruptcy proceeding by which defaulted sovereign debt may be collected in whole or in part.

Bank Obligations — To the extent the Fund invests in bank obligations, the Fund will be more susceptible to negative events affecting the banking industry. Banks are sensitive to changes in money market and general economic conditions. Banks are highly regulated. Decisions by regulators may limit the loans banks make and the interest rates and fees they charge, and may reduce bank profitability.

Sector Emphasis Risk — The securities of companies in the same business sector, if comprising a significant portion of the Fund’s portfolio, may in some circumstances react negatively to market conditions, interest rates and economic, regulatory or financial developments and adversely affect the value of the portfolio to a greater extent than if such securities comprised a lesser portion of the Fund’s portfolio or the Fund’s portfolio was diversified across a greater number of industry sectors.

Geographic Focus Risk — To the extent that it focuses its investments in a particular country or geographic region, the Fund may be more susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries within that country or geographic region. As a result, the Fund may be subject to greater price volatility and risk of loss than a fund holding more geographically diverse investments.

Environmental, Social and Governance Risk — The Adviser may consider certain ESG factors as part of its decision to buy and sell securities. Applying ESG factors to the investment analysis may impact the investment decision for securities of certain issuers and therefore the Fund may forgo some market opportunities available to funds that do not use ESG factors. Securities of companies with ESG practices may shift into and out of favor depending on market and economic conditions, and the Fund’s performance may at times be better or worse than the performance of funds that do not use ESG factors.

New Fund Risk — Because the Fund is new, investors in the Fund bear the risk that the Fund may not be successful in implementing its investment strategy, may not employ a successful investment strategy, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.

rr_RiskNotInsuredDepositoryInstitution

A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency.

Performance One Year or Less [Text]

rr_PerformanceNarrativeTextBlock

The Fund commenced operations on June 14, 2019 and therefore does not have performance history for a full calendar year. Once the Fund has completed a full calendar year of operations, a bar chart and table will be included that will provide some indication of the risks of investing in the Fund by showing the variability of the Fund’s returns and comparing the Fund’s performance to a broad measure of market performance. Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Current performance information is available by calling 1-833-GO-AEGON (833-462-3466) or on the Internet at www.aegoninvestments.com.

rr_PerformanceOneYearOrLess

The Fund commenced operations on June 14, 2019 and therefore does not have performance history for a full calendar year.

rr_PerformanceAvailabilityWebSiteAddress

www.aegoninvestments.com

dei_TradingSymbol

ADHIX

rr_DistributionAndService12b1FeesOverAssets

none

Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements

rr_ExpensesOverAssets

1.31%

rr_NetExpensesOverAssets

0.70%

rr_ExpenseExampleYear03

$ 355

rr_ProspectusLineItems

rr_ManagementFeesOverAssets

0.55%

rr_OtherExpensesOverAssets

0.76%

^[1]

rr_FeeWaiverOrReimbursementOverAssets

(0.61%)

^[3]

rr_ExpenseExampleYear01

$ 97

rr_RiskReturnHeading

Aegon Market Neutral Income Fund

rr_ObjectivePrimaryTextBlock

The Aegon Market Neutral Income Fund (the “Fund”) seeks to achieve positive absolute returns over a full business cycle through a combination of current income and capital appreciation.

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may be required to pay commissions and/or other forms of compensation to a broker for transactions in Institutional Shares, which are not reflected in the table or the example below.

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

January 31, 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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in total annual Fund operating expenses or in the example, affect the Fund’s performance. Because the Fund has not commenced investment operations as of the date of this prospectus, it does not have portfolio turnover information to report.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses are based on estimated amounts for the current fiscal year.

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 (including one year of capped expenses in each period) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

rr_StrategyNarrativeTextBlock

The Fund employs a market neutral investment strategy, which means that the Fund seeks to earn a positive absolute return over a full business cycle (i.e., a full cycle of economic expansion and contraction) by maintaining a portfolio that is designed to have low volatility and low correlations with the general stock and bond markets.

In seeking to achieve its investment objective, the Fund uses a convertible arbitrage strategy, which involves taking a long position in a convertible security and a short position in the underlying common stock, in order to capitalize on pricing inefficiencies between the convertible security and the stock. For example, the Adviser may sell common stocks or bonds that the Adviser believes to be overvalued short against positions in which the Fund has invested in convertible securities.

The Fund invests in convertible securities (including synthetic convertible securities), common stocks, preferred stocks, warrants and non-convertible fixed income securities. Convertible securities include, but are not limited to, corporate bonds, debentures, notes or preferred stocks and their hybrids that can be converted into (exchanged for) common stock or other securities, such as warrants or options, which provide an opportunity for equity participation. Synthetic convertible securities involve the combination of separate securities that possess the two principal characteristics of a traditional convertible security (i.e., an income producing component security (the “incoming-producing component”) and a right to acquire an equity security (the “convertible component”)). The income-producing component is achieved by investing in non-convertible, income-producing securities such as bonds and preferred stocks, while the convertible component is achieved by investing in warrants or options to buy common stock at a certain exercise price, or options on a stock index.

The Fund may utilize derivatives, principally options, futures contracts, forward contracts and swap agreements, to gain or hedge (i.e., offset) exposure to securities, markets, currencies, or other instruments. The Fund may invest in foreign companies in both developed and emerging market countries, and may invest in securities denominated in any currency, including local currencies or hard currencies (i.e., a currency that is not likely to depreciate suddenly or to fluctuate greatly in value). Emerging market countries are countries that are included in the JPMorgan Emerging Markets Bond Index - Global Diversified, the JPMorgan Corporate Emerging Markets Bond Index - Diversified, the JPMorgan Emerging Local Markets Index or the JPMorgan Government Bond Index - Emerging Markets Global Diversified, as well as those countries which are not defined as a High Income Organization for Economic Cooperation and Development (“OECD”) member country by the World Bank. The Fund may invest in securities of any market capitalization, maturity, duration or credit quality, including those that are rated below investment grade (“high yield” or “junk” bonds). From time to time, the Fund may focus its investments in a particular sector, or may focus its investments in a particular country or geographic region, such as Europe or Japan.

In managing the Fund’s assets, the Adviser uses a combination of “bottom-up” research of convertible securities, corporate debt and equity securities and a “top-down” analysis of the macroeconomic and interest rate environment and the global equity markets. In the Adviser’s qualitative “top-down” approach, the Adviser analyzes various fundamental, technical, sentiment and valuation factors that affect the movement of markets and securities prices worldwide. This “top-down” analysis assists the Adviser in analyzing portfolio risk and allocating assets among sectors, industries, and credit quality categories. In its “bottom-up” research, the Adviser considers various fundamental, technical and other factors, such as creditworthiness, debt covenants, capital structure, valuation, volatility and liquidity.

Due to its investment strategy, the Fund may buy and sell securities frequently.

rr_RiskNarrativeTextBlock

As with all mutual funds, there is no guarantee that the Fund will achieve its investment objective. You could lose money by investing in the Fund. A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency. The principal risk factors affecting shareholders’ investments in the Fund are set forth below.

Active Management Risk — The Fund is subject to the risk that the Adviser’s judgments about the attractiveness, value, or potential appreciation of the Fund’s investments may prove to be incorrect. If the investments selected and strategies employed by the Fund fail to produce the intended results, the Fund could underperform in comparison to other funds with similar objectives and investment strategies.

Market Neutral Strategy Risk — The Fund’s market neutral strategy may cause the Fund to underperform compared to equity or fixed income markets or other mutual funds that do not utilize a market neutral strategy. For example, in rising markets, the Fund’s short positions may significantly impact the Fund’s overall performance and cause the Fund to underperform or sustain losses. Periodic underperformance is to be expected and is a result of the Fund’s overall hedging techniques employed for the market neutral strategy. Additionally, there is a risk that the Adviser will be unable to construct a portfolio that limits the Fund’s exposure to market movements, and as a result, the Fund’s performance may reflect general market movements.

Convertible Securities Risk — The value of a convertible security is influenced by changes in interest rates (with investment value declining as interest rates increase and increasing as interest rates decline) and the credit standing of the issuer. The price of a convertible security will also normally vary in some proportion to changes in the price of the underlying common stock because of the conversion or exercise feature.

Preferred Stock Risk — Preferred stocks are non-voting equity securities that pay a stated fixed or variable rate of return. Preferred stocks are subject to issuer-specific risks (such as credit risk) and market risks applicable generally to equity securities. The market value of preferred stocks generally decreases when interest rates rise. Preferred stocks generally are subordinated to bonds and other debt instruments in a company’s capital structure in terms of priority to corporate income and liquidation payments and therefore will be subject to greater credit risk than the company’s bonds and other debt instruments. Preferred stock may also be subject to prepayment/re-investment risk, which is discussed elsewhere in this section.

Short Sales Risk — A short sale involves the sale of a security that the Fund does not own in the expectation of purchasing the same security (or a security exchangeable therefore) at a later date at a lower price. Short sales expose the Fund to the risk that it will be required to buy the security sold short (also known as “covering” the short position) at a time when the security has appreciated in value, thus resulting in a loss to the Fund. Investment in short sales may also cause the Fund to incur expenses related to borrowing securities. Reinvesting proceeds received from short selling may create leverage, which can amplify the effects of market volatility on the Fund’s share price. In addition, shorting a future contract may require posting only a margin that may amount to less than the notional exposure of the contract. Such a practice may exacerbate the loss in a case of adverse price action.

Credit Risk — The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation.

Sector Emphasis Risk — The securities of companies in the same business sector, if comprising a significant portion of the Fund’s portfolio, may in some circumstances react negatively to market conditions, interest rates and economic, regulatory or financial developments and adversely affect the value of the portfolio to a greater extent than if such securities comprised a lesser portion of the Fund’s portfolio or the Fund’s portfolio was diversified across a greater number of industry sectors.

Interest Rate Risk — The risk that a rise in interest rates will cause a fall in the value of fixed income securities in which the Fund invests. A low interest rate environment may present greater interest rate risk, because there may be a greater likelihood of rates increasing and rates may increase more rapidly.

Duration Risk — A portfolio with a longer average portfolio duration is more sensitive to changes in interest rates than a portfolio with a shorter average portfolio duration.

Geographic Focus Risk — To the extent that it focuses its investments in a particular country or geographic region, the Fund may be more susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries within that country or geographic region. As a result, the Fund may be subject to greater price volatility and risk of loss than a fund holding more geographically diverse investments.

Derivatives Risk — The Fund’s use of futures contracts, forward contracts, options and swaps is subject to market risk, correlation risk and liquidity risk. Liquidity risk is described elsewhere in this section. Many over-the-counter derivative instruments will not have liquidity beyond the counterparty to the instrument. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund’s use of forward contracts, options and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described elsewhere in this section. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund’s initial investment. The other parties to certain derivative contracts present the same types of credit risk as issuers of fixed income securities. The Fund’s use of derivatives may also increase the amount of taxes payable by shareholders. Both U.S. and non-U.S. regulators are in the process of adopting and implementing regulations governing derivatives markets, the ultimate impact of which remains unclear.

Warrants Risk — Warrants are instruments that entitle the holder to buy an equity security at a specific price for a specific period of time. Warrants may be more speculative than other types of investments. The price of a warrant may be more volatile than the price of its underlying security, and a warrant may offer greater potential for capital appreciation as well as capital loss. A warrant ceases to have value if it is not exercised prior to its expiration date.

Portfolio Turnover Risk — Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities, which may affect the Fund’s performance.

Liquidity Risk — The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price of the security, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance.

Equity Market Risk — The risk that stock prices will fall over short or extended periods of time.

Fixed Income Market Risk — The prices of the Fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. Generally, the Fund’s fixed income securities will decrease in value if interest rates rise and vice versa. In a low interest rate environment, risks associated with rising rates are heightened. Declines in dealer market-making capacity as a result of structural or regulatory changes could decrease liquidity and/or increase volatility in the fixed income markets. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. In response to these events, the Fund’s value may fluctuate and/or the Fund may experience increased redemptions from shareholders, which may impact the Fund’s liquidity or force the Fund to sell securities into a declining or illiquid market.

Corporate Fixed Income Securities Risk — Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers.

Below Investment Grade Securities (Junk Bonds) Risk — Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are generally more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Because these securities typically offer a higher rate of return to compensate investors for these risks, they are sometimes referred to as “high yield bonds,” but there is no guarantee that an investment in these securities will result in a high rate of return.

Synthetic Convertible Instruments Risk — The value of a synthetic convertible instrument will respond differently to market fluctuations than a convertible security because a synthetic convertible instrument is composed of two or more separate securities, each with its own market value. In addition, if the value of the underlying common stock or the level of the index involved in the convertible component falls below the exercise price of the warrant or option, the warrant or option may lose all value.

Foreign Investment/Emerging Markets Risk — The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries.

Foreign Currency Risk — As a result of the Fund’s investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Due to the Fund’s active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad.

New Fund Risk — Because the Fund is new, investors in the Fund bear the risk that the Fund may not be successful in implementing its investment strategy, may not employ a successful investment strategy, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.

Extension Risk — The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security’s value.

Prepayment/Re-investment Risk — The risk that, in a declining interest rate environment, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates.

rr_RiskNotInsuredDepositoryInstitution

A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency.

Performance One Year or Less [Text]

rr_PerformanceNarrativeTextBlock

The Fund has not commenced operations as of the date of this prospectus, and therefore does not have performance history for a full calendar year. Once the Fund has completed a full calendar year of operations, a bar chart and table will be included that will provide some indication of the risks of investing in the Fund by showing the variability of the Fund’s returns and comparing the Fund’s performance to a broad measure of market performance. Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Current performance information is available by calling 1-833-GO-AEGON (833-462-3466) or on the Internet at www.aegoninvestments.com.

rr_PerformanceOneYearOrLess

The Fund has not commenced operations as of the date of this prospectus, and therefore does not have performance history for a full calendar year.

rr_PerformanceAvailabilityWebSiteAddress

www.aegoninvestments.com

dei_TradingSymbol

AMNIX

rr_DistributionAndService12b1FeesOverAssets

none

Other Operating Expenses

rr_Component3OtherExpensesOverAssets

1.07%

Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements

rr_ExpensesOverAssets

1.94%

rr_NetExpensesOverAssets

1.07%

rr_ExpenseExampleYear03

$ 525

rr_ProspectusLineItems

Dividend and Interest Expenses on Securities Sold Short

rr_ManagementFeesOverAssets

0.80%

rr_Component1OtherExpensesOverAssets

0.07%

rr_OtherExpensesOverAssets

1.14%

^[1]

rr_FeeWaiverOrReimbursementOverAssets

(0.87%)

^[4]

rr_ExpenseExampleYear01

$ 134

rr_RiskReturnHeading

Mesirow Financial Enhanced Core Plus Fund

rr_ObjectivePrimaryTextBlock

The Mesirow Financial Enhanced Core Plus Fund (the “Enhanced Core Plus Fund” or the “Fund”) seeks to maximize total return through capital appreciation and current income consistent with preservation of capital.

rr_ExpenseNarrativeTextBlock

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

rr_OperatingExpensesCaption

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

Other Expenses, New Fund, Based on Estimates [Text]

rr_PortfolioTurnoverHeading

Portfolio Turnover

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses are based on estimated amounts for the current fiscal year.

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 (including one year of capped expenses in each period) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in fixed income securities and other financial instruments with economic characteristics similar to such securities. The Fund primarily invests in investment-grade fixed income securities with an adjusted portfolio duration that normally varies within two years (plus or minus) of the adjusted duration of the securities comprising the Bloomberg Barclays U.S. Aggregate Index. As of September 30, 2019, the average portfolio duration of securities comprising the Bloomberg Barclays U.S. Aggregate Index was approximately 5.87 years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in interest rates.

For purposes of the Fund’s 80% investment policy, fixed income securities include securities issued or guaranteed by the U.S. Government and its agencies or instrumentalities, municipal bonds, corporate bonds, residential and commercial mortgage-backed securities, asset-backed securities, convertible securities, trust preferred securities, loan participations and assignments, and U.S. dollar-denominated foreign debt securities. The Fund typically will also invest in exchange-traded funds that invest in such instruments, preferred stocks and hybrid preferred securities. Additionally, the Fund will invest up to 15% of its net assets in foreign exchange spot transactions (including with respect to emerging market currencies) and derivative instruments, such as options, futures contracts, forward contracts or swap agreements (including non-deliverable forwards and credit default swaps), for bona fide hedging purposes, to gain exposure to certain markets or segments of markets, and for speculative purposes. The Fund may also purchase or sell securities or other assets on a when-issued or delayed delivery basis.

While the Fund primarily invests in fixed income securities rated investment grade by Moody’s Investors Service, Inc. (“Moody’s”), or equivalently rated by Standard & Poor’s Rating Services (“S&P”) or Fitch, Inc. (“Fitch”), it may invest to a lesser extent in high yield instruments (also known as “junk bonds”). The Fund may borrow money for, among other reasons, cash management purposes, to obtain leverage and to meet redemptions.

The Adviser’s investment philosophy and process for selecting investments for the Fund generally includes a neutral duration policy, meaning that the Adviser does not shorten or lengthen the Fund’s duration based on interest rate forecasts, but the Adviser expects that the Fund’s duration may vary within two years (plus or minus) of the duration of the benchmark. The Adviser strives to diversify at the sector, industry and issuer level when constructing the Fund’s portfolio. At the sector level, the Adviser starts with the benchmark index weightings, modifies the index weightings to achieve what it believes will produce the most favorable risk-adjusted returns based on current market conditions and outlook, and then tactically adjusts sector weightings as market opportunities present themselves. The Adviser believes the majority of available excess returns can be captured through sector allocation and specific security selection. This approach is designed to capture the bulk of the excess returns available in the fixed income market while minimizing the variability of those returns relative to the Fund’s benchmark. The Adviser believes the key to this investment process is the responsiveness, focus and analysis provided by its in-house sector specialists, credit analysts and trading professionals.

The Adviser will target spot transactions and derivative instruments on behalf of the Fund that it believes will generate consistent alpha (i.e., outperformance) in all market conditions. The Adviser will allocate capital between fundamental and technical currency strategies, and will aim to profit from short- and medium-term moves in various markets’ currency pairs. When investing in high yield bonds on behalf of the Fund, the Adviser will target instruments that have individual yield premiums which the Adviser believes are favorable and which are viewed by the Adviser as having a comparable or lower probability of default and/or the risk of loss compared to their peer group.

The Fund may invest in cash or money market instruments for the purpose of meeting redemption requests or making other anticipated cash payments.

rr_RiskNarrativeTextBlock

As with all mutual funds, there is no guarantee that the Fund will achieve its investment objective. You could lose money by investing in the Fund. A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency. The principal risk factors affecting shareholders’ investments in the Fund are set forth below.

Credit Risk — The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation.

Corporate Fixed Income Securities Risk — Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers.

Below Investment Grade Securities (Junk Bonds) Risk — Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are generally more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Because these securities typically offer a higher rate of return to compensate investors for these risks, they are sometimes referred to as “high yield bonds,” but there is no guarantee that an investment in these securities will result in a high rate of return.

Bank Loans Risk — Investments in bank loans (through both assignments and participations) are generally subject to the same risks as investments in other types of debt instruments, including, in many cases, investments in junk bonds. There may be limited public information available regarding bank loans and bank loans may be difficult to value. If the Fund holds a bank loan through another financial institution, or relies on a financial institution to administer the loan, its receipt of principal and interest on the loan may be subject to the credit risk of that financial institution. It is possible that any collateral securing a loan may be insufficient or unavailable to the Fund, and that the Fund’s rights to collateral may be limited by bankruptcy or insolvency laws. In addition, the secondary market for bank loans may be subject to irregular trading activity, wide bid/ask spreads, and extended trade settlement periods, which may cause the Fund to be unable to realize the full value of its investment in a bank loan.

Bank loans may not be considered “securities,” and purchasers, such as the Fund, therefore may not be entitled to rely on the anti-fraud protections of the federal securities laws.

Hybrid Preferred Securities Risk — Hybrid preferred securities may be issued by corporations, generally in the form of interest-bearing instruments with preferred securities characteristics, or by an affiliated trust or partnership of the corporation, generally in the form of preferred interests in subordinated business trusts or similarly structured securities. Although hybrid preferred security holders generally have claims to assets in a corporate liquidation that are senior to those of traditional preferred securities, the claims of such holders are generally still subordinate to those of senior debt holders.

Trust Preferred Securities Risk — Trust preferred securities are preferred stocks issued by a special purpose trust subsidiary backed by subordinated debt of the corporate parent. The Adviser considers trust preferred securities to be debt securities. Trust preferred securities are subject to increased credit risk and market value volatility, as well as the risk that the Fund may have to liquidate other investments in order to satisfy the distribution requirements applicable to regulated investment companies if the trust preferred security or the subordinated debt is treated as an original issue discount obligation, and thereby causes the Fund to accrue interest income without receiving corresponding cash payments. There is also the risk that the underlying obligations, and thus the trust preferred securities, may be prepaid after a stated call date or as a result of certain tax or regulatory events, resulting in a lower yield to maturity.

Fixed Income Market Risk — The prices of the Fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. Generally, the Fund’s fixed income securities will decrease in value if interest rates rise and vice versa. In a low interest rate environment, risks associated with rising rates are heightened. Declines in dealer market-making capacity as a result of structural or regulatory changes could decrease liquidity and/or increase volatility in the fixed income markets. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. In response to these events, the Fund’s value may fluctuate and/or the Fund may experience increased redemptions from shareholders, which may impact the Fund’s liquidity or force the Fund to sell securities into a declining or illiquid market.

Foreign Currency Risk — Foreign currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. Due to the Fund’s active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad.

Market Risk — The risk that the market value of a security or other Fund holding may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.

Interest Rate Risk — The risk that a rise in interest rates will cause a fall in the value of fixed income securities, including U.S. Government securities, in which the Fund invests. Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. A low interest rate environment may present greater interest rate risk because there may be a greater likelihood of rates increasing and rates may increase more rapidly.

Investment Style Risk — The risk that fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole.

Liquidity Risk — The risk that certain securities or other Fund holdings may be difficult or impossible to sell at the time and the price that the seller would like. The seller may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance.

Extension Risk — The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security’s value.

Prepayment Risk — The risk that, in a declining interest rate environment, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates.

Leverage Risk — The Fund’s use of borrowing, derivatives and when-issued, delayed delivery or forward commitment transactions may result in the Fund’s total investment exposure substantially exceeding the value of its portfolio securities and, in certain cases, the Fund’s investment returns substantially depending on the performance of securities that the Fund may not directly own. The use of leverage can amplify the effects of market volatility on the Fund’s share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. In the case of borrowings, the Fund may experience losses if its borrowing costs exceed the investment returns on the securities purchased with the borrowed money. The Fund’s use of leverage may result in a heightened risk of investment loss.

Derivatives Risk — The Fund’s use of futures, forwards, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk, liquidity risk and market risk are described below. Many over-the-counter (OTC) derivative instruments will not have liquidity beyond the counterparty to the instrument. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund’s use of OTC forward contracts, options and swaps is also subject to credit risk and valuation risk. Valuation risk is described below. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund’s initial investment. The other parties to certain derivative contracts present the same types of credit risk as issuers of fixed income securities. The Fund’s use of derivatives may also increase the amount of taxes payable by shareholders. Both U.S. and non-U.S. regulators are in the process of adopting and implementing regulations governing derivatives markets, the ultimate impact of which remains unclear. Additionally, some derivatives, such as non-deliverable forwards, require funds to be posted by the Fund when positions are opened. This creates a risk that the funds may not be returned to the Fund even if the position is closed.

Convertible Securities and Preferred Stocks Risk — Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible bonds may be more sensitive to changes in interest rates than stocks. Convertible bonds may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due.

Duration Risk — The longer-term securities in which the Fund may invest tend to be more volatile than shorter-term securities. A portfolio with a longer average portfolio duration is more sensitive to changes in interest rates than a portfolio with a shorter average portfolio duration.

Asset-Backed Securities Risk — Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities. Securitization trusts generally do not have any assets or sources of funds other than receivables and related property they own, and asset-backed securities are generally not insured or guaranteed by the related sponsor or any other entity. Asset-backed securities may be more illiquid than more conventional types of fixed income securities that the Fund may acquire.

Mortgage-Backed Securities Risk — Mortgage-backed securities are affected significantly by the rate of prepayments and modifications of the mortgage loans backing those securities, as well as by other factors such as borrower defaults, delinquencies, realized or liquidation losses and other shortfalls. Mortgage-backed securities are particularly sensitive to prepayment risk, which is described below, given that the term to maturity for mortgage loans is generally substantially longer than the expected lives of those securities; however, the timing and amount of prepayments cannot be accurately predicted. The timing of changes in the rate of prepayments of the mortgage loans may significantly affect the Fund’s actual yield to maturity on any mortgage-backed securities, even if the average rate of principal payments is consistent with the Fund’s expectation. Along with prepayment risk, mortgage-backed securities are significantly affected by interest rate risk, which is described above. In a low interest rate environment, mortgage loan prepayments would generally be expected to increase due to factors such as refinancings and loan modifications at lower interest rates. In contrast, if prevailing interest rates rise, prepayments of mortgage loans would generally be expected to decline and therefore extend the weighted average lives of mortgage-backed securities held or acquired by the Fund.

Municipal Securities Risk — Municipal securities, like other fixed income securities, rise and fall in value in response to economic and market factors, primarily changes in interest rates, and actual or perceived credit quality. Rising interest rates will generally cause municipal securities to decline in value. Longer-term securities respond more sharply to interest rate changes than do shorter-term securities. A municipal security will also lose value if, due to rating downgrades or other factors, there are concerns about the issuer’s current or future ability to make principal or interest payments. State and local governments rely on taxes and, to some extent, revenues from private projects financed by municipal securities, to pay interest and principal on municipal debt. Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations. Actual or perceived erosion of the creditworthiness of municipal issuers may reduce the value of the Fund’s holdings. As a result, the Fund will be more susceptible to factors that adversely affect issuers of municipal obligations than a mutual fund that does not have as great a concentration in municipal obligations.

When-Issued and Delayed Delivery Securities Risk — When-issued and delayed delivery securities involve the risk that the security the Fund buys will lose value prior to its delivery.

Foreign Investment/Emerging Markets Risk — The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries.

Exchange-Traded Funds (ETFs) Risk — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. When the Fund invests in an ETF, in addition to directly bearing the expenses associated with its own operations, it will bear a pro rata portion of the ETF’s expenses.

Money Market Instruments Risk — The value of money market instruments may be affected by changing interest rates and by changes in the credit ratings of the investments. An investment in a money market fund is not a bank deposit and is not insured or guaranteed by any bank, the FDIC or any other government agency. A money market fund’s sponsor has no legal obligation to provide financial support to the fund, and there should be no expectation that the sponsor will provide financial support to the fund at any time. Certain money market funds float their net asset value while others seek to preserve the value of investments at a stable net asset value (typically, $1.00 per share). An investment in a money market fund, even an investment in a fund seeking to maintain a stable net asset value per share, is not guaranteed and it is possible for the Fund to lose money by investing in these and other types of money market funds. If the liquidity of a money market fund’s portfolio deteriorates below certain levels, the money market fund may suspend redemptions (i.e., impose a redemption gate) and thereby prevent the Fund from selling its investment in the money market fund or impose a fee of up to 2% on amounts the Fund redeems from the money market fund (i.e., impose a liquidity fee). These measures may result in an investment loss or prohibit the Fund from redeeming shares when the Adviser would otherwise redeem shares. Money market funds and the securities they invest in are subject to comprehensive regulations. The enactment of new legislation or regulations, as well as changes in interpretation and enforcement of current laws, may affect the manner of operation, performance and/or yield of money market funds.

Valuation Risk — The risk that a security may be difficult to value. The Fund may value certain securities at a price higher than the price at which they can be sold.

U.S. Government Securities Risk — Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency’s own resources.

New Fund Risk — Because the Fund is new, investors in the Fund bear the risk that the Fund may not be successful in implementing its investment strategy, may not employ a successful investment strategy, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.

rr_RiskNotInsuredDepositoryInstitution

A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency.

Performance One Year or Less [Text]

rr_PerformanceNarrativeTextBlock

The Fund commenced operations on October 1, 2019 and therefore does not have performance history for a full calendar year. Once the Fund has completed a full calendar year of operations, a bar chart and table will be included that will provide some indication of the risks of investing in the Fund by showing the variability of the Fund’s returns and comparing the Fund’s performance to a broad measure of market performance. Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Current performance information is available by calling 833-MESIROW (833-637-4769) or on the Internet at www.mesirowfinancial.com.

rr_PerformanceOneYearOrLess

The Fund commenced operations on October 1, 2019 and therefore does not have performance history for a full calendar year.

rr_PerformanceAvailabilityWebSiteAddress

www.mesirowfinancial.com

dei_TradingSymbol

MFBIX

rr_ManagementFeesOverAssets

0.37%

rr_OtherExpensesOverAssets

0.70%

^[1]

rr_FeeWaiverOrReimbursementOverAssets

(0.53%)

^[6]

rr_ExpenseExampleYear01

$ 55

dei_TradingSymbol

MFBVX

rr_ManagementFeesOverAssets

0.37%

rr_OtherExpensesOverAssets

0.70%

^[1]

rr_FeeWaiverOrReimbursementOverAssets

(0.53%)

^[6]

rr_ExpenseExampleYear01

$ 81

rr_RiskReturnHeading

Mesirow Financial High Yield Fund

rr_ObjectivePrimaryTextBlock

The Mesirow Financial High Yield Fund (the “High Yield Fund” or the “Fund”) seeks to provide a high level of current income consistent with the preservation of principal.

rr_ExpenseNarrativeTextBlock

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

rr_OperatingExpensesCaption

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

rr_PortfolioTurnoverHeading

Portfolio Turnover

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

rr_PortfolioTurnoverRate

58.00%

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses in this fee table do not correlate to the expense ratio in the Fund’s Financial Highlights because the Financial Highlights include only the direct operating expenses incurred by the Fund and exclude Acquired Fund Fees and Expenses, and Other Expenses have been restated to reflect current fees.

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 (including one year of capped expenses in each period) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in high yield instruments (also known as “junk bonds”) and other financial instruments with economic characteristics similar to such instruments, such as derivatives and exchange-traded funds (“ETFs”). This investment policy may be changed by the Fund upon 60 days’ prior written notice to shareholders.

High yield instruments in which the Fund may invest include domestic and foreign bonds (including corporate bonds), convertible securities, forward commitments, loan participations and assignments, preferred stocks and privately issued securities (e.g., Rule 144A securities) that are rated below investment grade by Moody’s Investors Service, Inc. (“Moody’s”), or equivalently rated by Standard & Poor’s Rating Services (“S&P”) or Fitch, Inc. (“Fitch”), or, if unrated, determined by the Adviser to be of comparable quality.

The Fund may invest the remainder of its assets in investment grade instruments including securities issued or guaranteed by the U.S. Government and its agencies or instrumentalities, municipal bonds, corporate bonds, residential and commercial mortgage-backed securities, asset-backed securities, loan participations and assignments, U.S. dollar-denominated foreign debt securities and ETFs that invest in such instruments. The Fund may also invest up to 5% of its net assets in foreign currency-denominated securities. The Fund may also invest up to 10% of its net assets in securities and instruments that are economically tied to emerging market countries, which the Adviser defines as those countries that are: (i) characterized as developing or emerging by any of the World Bank, the United Nations, the International Finance Corporation, or the European Bank for Reconstruction and Development; (ii) included in an emerging markets index by a recognized index provider; or (iii) countries with similar developing or emerging characteristics as countries classified as emerging market countries pursuant to sub-paragraph (i) and (ii) above, in each case determined at the time of purchase. The Fund may also invest in equity securities, which are ownership interests in a public or private company or partnership and consist of common stocks, warrants and rights to acquire common stock, and investments in master limited partnerships (“MLPs”). The Fund may invest in securities of companies with any market capitalization.

The Fund also may invest up to 5% of its net assets in derivative instruments, such as options, futures contracts or swap agreements, for bona fide hedging purposes, to gain exposure to certain markets or segments of markets, and for speculative purposes. From time to time, the Fund may experience significant inflows; if this occurs, the Fund may, on a temporary or interim basis, invest these new assets (potentially in an amount which may approach up to 50% of the Fund’s total net assets if new flows were extremely large relative to the Fund’s current assets) in a combination of derivative instruments and other investment companies, including ETFs, until such time as the Adviser can identify and invest in appropriate high yield instruments in accordance with the Fund’s principal strategy. The Fund may purchase or sell securities or other assets on a when-issued, delayed delivery or forward commitment basis. The Fund may borrow money for, among other reasons, cash management purposes, to obtain leverage and to meet redemptions.

The average portfolio duration of the Fund normally varies within two years (plus or minus) of the portfolio duration of the securities comprising the Bloomberg Barclays U.S. Corporate High-Yield Index, which as of September 30, 2019 was 2.99 years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in interest rates.

In selecting investments for the Fund, the Adviser will consider the risks and opportunities presented by the industries within the high yield universe. The Adviser evaluates the bond issuers within the selected industries and identifies those investments which the Adviser believes have favorable risk reward characteristics and match the Adviser’s investing philosophy. The Adviser evaluates various criteria such as historical and future expected financial performance, management tenure and experience, capital structure, free cash flow generation, barriers to entry, security protections, yield and relative value, and ownership structure. The Adviser targets investments that have individual yield premiums which appear to be favorable and are viewed by the Adviser as having a comparable or lower probability of default and/or loss risk.

The Fund may invest in cash or money market instruments for the purpose of meeting redemption requests or making other anticipated cash payments.

rr_RiskNarrativeTextBlock

As with all mutual funds, there is no guarantee that the Fund will achieve its investment objective. You could lose money by investing in the Fund. A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency. The principal risk factors affecting shareholders’ investments in the Fund are set forth below.

Below Investment Grade Securities (Junk Bonds) Risk — Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are generally more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Because these securities typically offer a higher rate of return to compensate investors for these risks, they are sometimes referred to as “high yield bonds,” but there is no guarantee that an investment in these securities will result in a high rate of return.

Market Risk — The risk that the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.

Credit Risk — The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation.

Fixed Income Market Risk — The prices of the Fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. Generally, the Fund’s fixed income securities will decrease in value if interest rates rise and vice versa. In a low interest rate environment, risks associated with rising rates are heightened. Declines in dealer market-making capacity as a result of structural or regulatory changes could decrease liquidity and/or increase volatility in the fixed income markets. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. In response to these events, the Fund’s value may fluctuate and/or the Fund may experience increased redemptions from shareholders, which may impact the Fund’s liquidity or force the Fund to sell securities into a declining or illiquid market.

Corporate Fixed Income Securities Risk — Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers.

Bank Loans Risk — Investments in bank loans (through both assignments and participations) are generally subject to the same risks as investments in other types of debt instruments, including, in many cases, investments in junk bonds. There may be limited public information available regarding bank loans and bank loans may be difficult to value. If the Fund holds a bank loan through another financial institution, or relies on a financial institution to administer the loan, its receipt of principal and interest on the loan may be subject to the credit risk of that financial institution. It is possible that any collateral securing a loan may be insufficient or unavailable to the Fund, and that the Fund’s rights to collateral may be limited by bankruptcy or insolvency laws. In addition, the secondary market for bank loans may be subject to irregular trading activity, wide bid/ask spreads, and extended trade settlement periods, which may cause the Fund to be unable to realize the full value of its investment in a bank loan.

Bank loans may not be considered “securities,” and purchasers, such as the Fund, therefore may not be entitled to rely on the anti-fraud protections of the federal securities laws.

Prepayment Risk — The risk that, in a declining interest rate environment, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates.

Extension Risk — The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security’s value.

Investment Style Risk — The risk that high yield fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole.

Interest Rate Risk — The risk that a rise in interest rates will cause a fall in the value of fixed income securities, including U.S. Government securities, in which the Fund invests. Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. A low interest rate environment may present greater interest rate risk because there may be a greater likelihood of rates increasing and rates may increase more rapidly.

Duration Risk — The longer-term securities in which the Fund may invest tend to be more volatile than shorter-term securities. A portfolio with a longer average portfolio duration is more sensitive to changes in interest rates than a portfolio with a shorter average portfolio duration.

Liquidity Risk — The risk that certain securities may be difficult or impossible to sell at the time and the price that the seller would like. The seller may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance.

Valuation Risk — The risk that a security may be difficult to value. The Fund may value certain securities at a price higher than the price at which they can be sold.

Exchange-Traded Funds (ETFs) Risk — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. When the Fund invests in an ETF, in addition to directly bearing the expenses associated with its own operations, it will bear a pro rata portion of the ETF’s expenses.

Money Market Instruments Risk — The value of money market instruments may be affected by changing interest rates and by changes in the credit ratings of the investments. An investment in a money market fund is not a bank deposit and is not insured or guaranteed by any bank, the FDIC or any other government agency. A money market fund’s sponsor has no legal obligation to provide financial support to the fund, and there should be no expectation that the sponsor will provide financial support to the fund at any time. Certain money market funds float their net asset value while others seek to preserve the value of investments at a stable net asset value (typically, $1.00 per share). An investment in a money market fund, even an investment in a fund seeking to maintain a stable net asset value per share, is not guaranteed and it is possible for the Fund to lose money by investing in these and other types of money market funds. If the liquidity of a money market fund’s portfolio deteriorates below certain levels, the money market fund may suspend redemptions (i.e., impose a redemption gate) and thereby prevent the Fund from selling its investment in the money market fund or impose a fee of up to 2% on amounts the Fund redeems from the money market fund (i.e., impose a liquidity fee). These measures may result in an investment loss or prohibit the Fund from redeeming shares when the Adviser would otherwise redeem shares. Money market funds and the securities they invest in are subject to comprehensive regulations. The enactment of new legislation or regulations, as well as changes in interpretation and enforcement of current laws, may affect the manner of operation, performance and/or yield of money market funds.

Leverage Risk — The Fund’s use of borrowing, derivatives and when-issued, delayed delivery or forward commitment transactions may result in the Fund’s total investment exposure substantially exceeding the value of its portfolio securities and, in certain cases, the Fund’s investment returns depending substantially on the performance of securities that the Fund may not directly own. The use of leverage can amplify the effects of market volatility on the Fund’s share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. In the case of borrowings, the Fund may experience losses if its borrowing costs exceed the investment returns on the securities purchased with the borrowed money. The Fund’s use of leverage may result in a heightened risk of investment loss.

Foreign Currency Risk — As a result of the Fund’s investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar, in which case the dollar value of an investment in the Fund would be adversely affected.

Asset-Backed Securities Risk — Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities. Securitization trusts generally do not have any assets or sources of funds other than receivables and related property they own, and asset-backed securities are generally not insured or guaranteed by the related sponsor or any other entity. Asset-backed securities may be more illiquid than more conventional types of fixed income securities that the Fund may acquire.

Convertible Securities and Preferred Stocks Risk — Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible securities may be more sensitive to changes in interest rates than stocks. Convertible securities may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due.

Derivatives Risk — The Fund’s use of futures, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk, liquidity risk and market risk are described below. Many over-the-counter (OTC) derivative instruments will not have liquidity beyond the counterparty to the instrument. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund’s use of OTC options and swaps is also subject to credit risk and valuation risk. Valuation risk is described below. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund’s initial investment. The other parties to certain derivative contracts present the same types of credit risk as issuers of fixed income securities. The Fund’s use of derivatives may also increase the amount of taxes payable by shareholders. Both U.S. and non-U.S. regulators are in the process of adopting and implementing regulations governing derivatives markets, the ultimate impact of which remains unclear.

Foreign Investment/Emerging Markets Risk — The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries.

Mortgage-Backed Securities Risk — Mortgage-backed securities are affected significantly by the rate of prepayments and modifications of the mortgage loans backing those securities, as well as by other factors such as borrower defaults, delinquencies, realized or liquidation losses and other shortfalls. Mortgage-backed securities are particularly sensitive to prepayment risk, which is described below, given that the term to maturity for mortgage loans is generally substantially longer than the expected lives of those securities; however, the timing and amount of prepayments cannot be accurately predicted. The timing of changes in the rate of prepayments of the mortgage loans may significantly affect the Fund’s actual yield to maturity on any mortgage-backed securities, even if the average rate of principal payments is consistent with the Fund’s expectation. Along with prepayment risk, mortgage-backed securities are significantly affected by interest rate risk, which is described above. In a low interest rate environment, mortgage loan prepayments would generally be expected to increase due to factors such as refinancings and loan modifications at lower interest rates. In contrast, if prevailing interest rates rise, prepayments of mortgage loans would generally be expected to decline and therefore extend the weighted average lives of mortgage-backed securities held or acquired by the Fund.

Municipal Securities Risk — Municipal securities, like other fixed income securities, rise and fall in value in response to economic and market factors, primarily changes in interest rates, and actual or perceived credit quality. Rising interest rates will generally cause municipal securities to decline in value. Longer-term securities respond more sharply to interest rate changes than do shorter-term securities. A municipal security will also lose value if, due to rating downgrades or other factors, there are concerns about the issuer’s current or future ability to make principal or interest payments. State and local governments rely on taxes and, to some extent, revenues from private projects financed by municipal securities, to pay interest and principal on municipal debt. Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations. Actual or perceived erosion of the creditworthiness of municipal issuers may reduce the value of the Fund’s holdings. As a result, the Fund will be more susceptible to factors that adversely affect issuers of municipal obligations than a mutual fund that does not have as great a concentration in municipal obligations.

U.S. Government Securities Risk — Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency’s own resources.

When-Issued and Delayed Delivery Securities and Forward Commitments Risk — When-issued and delayed delivery securities and forward commitments involve the risk that the security the Fund buys will lose value prior to its delivery.

Equity Market Risk — The risk that stock prices will fall over short or extended periods of time.

Small- and Mid-Capitalization Companies Risk — Small- and mid-capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small- and mid-capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small- and mid-capitalization stocks may be more volatile than those of larger companies. Small- and mid-capitalization stocks may be traded over-the-counter or listed on an exchange.

Large Capitalization Risk — The risk that larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies.

Master Limited Partnerships (MLPs) Risk — MLPs are limited partnerships in which the ownership units are publicly traded. MLPs often own several properties or businesses (or own interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. Additional risks of investing in a MLP also include those involved in investing in a partnership as opposed to a corporation, such as limited control of management, limited voting rights and tax risks. MLPs may be subject to state taxation in certain jurisdictions, which will have the effect of reducing the amount of income paid by the MLP to its investors.

Privately Issued Securities Risk — Investment in privately placed securities may be less liquid than in publicly traded securities. Although these securities may be resold in privately negotiated transactions, the prices realized from these sales could be less than those originally paid by the Fund or less than what may be considered the fair value of such securities. Further, companies whose securities are not publicly traded may not be subject to the disclosure and other investor protection requirements that might be applicable if their securities were publicly traded.

Warrants and Rights Risk — Warrants and rights may be more speculative than other types of investments. The price of a warrant or right may be more volatile than the price of its underlying security, and a warrant or right may offer greater potential for capital appreciation as well as capital loss. A warrant or right ceases to have value if it is not exercised prior to its expiration date.

rr_RiskNotInsuredDepositoryInstitution

A Fund share is not a bank deposit and it is not insured or guaranteed by the FDIC or any government agency.

rr_PerformanceNarrativeTextBlock

The bar chart and the performance table below illustrate the risks of an investment in the Fund by showing the Fund’s Institutional Shares performance for the 2019 calendar year and by showing how the Fund’s average annual total returns for 1 year and since inception compare with those of a broad measure of market performance. Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Updated performance information is available by calling 833-MESIROW (833-637-4769) or on the Internet at www.mesirowfinancial.com.

rr_PerformanceAvailabilityPhone

833-MESIROW (833-637-4769)

Performance Table Heading

rr_PerformancePastDoesNotIndicateFuture

Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

rr_PerformanceTableHeading

Average Annual Returns for Periods Ended December 31, 2019

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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 (“IRAs”).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

This table compares the Fund’s average annual total returns for the periods ended December 31, 2019 to those of an appropriate broad-based index.

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. 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 Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”). After tax returns are shown for Institutional Shares only. After tax returns for Investor Shares will vary.

Redemption Fee (as a percentage of amount redeemed)

rr_ProspectusLineItems

rr_RedemptionFeeOverRedemption

(1.00%)

^[5]

Acquired Fund Fees and Expenses

rr_DistributionAndService12b1FeesOverAssets

none

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

rr_FeeWaiverOrReimbursementOverAssets

(1.14%)

^[9]

Highest Quarterly Return, Date

rr_ExpenseExampleYear01

$ 79

Five Years

rr_ExpenseExampleYear05

926

Annual Return 2019

rr_AnnualReturn2019

12.99%

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2019

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

WORST QUARTER

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

1.33%

rr_AverageAnnualReturnYear01

12.99%

rr_AverageAnnualReturnInceptionDate

Dec. 03, 2018

Redemption Fee (as a percentage of amount redeemed)

rr_ProspectusLineItems

rr_RedemptionFeeOverRedemption

(1.00%)

^[5]

Acquired Fund Fees and Expenses

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

rr_FeeWaiverOrReimbursementOverAssets

(1.14%)

^[9]

rr_ExpenseExampleYear01

$ 104

Five Years

rr_ExpenseExampleYear05

1,055

rr_AverageAnnualReturnLabel

Fund Returns Before Taxes

rr_AverageAnnualReturnSinceInception

9.08%

rr_AverageAnnualReturnLabel

Fund Returns After Taxes

rr_AverageAnnualReturnSinceInception

5.89%

rr_AverageAnnualReturnLabel

Fund Returns After Taxes on Distributions and Sale of Fund Shares

rr_AverageAnnualReturnSinceInception

5.82%

rr_AverageAnnualReturnLabel

Bloomberg Barclays U.S. Corporate High Yield Index

rr_AverageAnnualReturnSinceInception

10.54%

rr_RiskReturnHeading

Mesirow Financial Small Cap Value Sustainability Fund

rr_ObjectivePrimaryTextBlock

The Mesirow Financial Small Cap Value Sustainability Fund (the “Small Cap Value Sustainability Fund” or the “Fund”) seeks to provide long-term capital appreciation with less volatility than the U.S. small cap value market.

rr_ExpenseNarrativeTextBlock

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

rr_OperatingExpensesCaption

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

rr_PortfolioTurnoverHeading

Portfolio Turnover

Expense Example [Heading]

rr_PortfolioTurnoverRate

131.00%

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the Fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and the performance table below illustrate the risks of an investment in the Fund by showing the Fund’s performance for the 2019 calendar year and by showing how the Fund’s average annual total returns for 1 year and since inception compare with those of a broad measure of market performance.

Bar Chart Closing [Text Block]

rr_PerformanceAvailabilityWebSiteAddress

www.mesirowfinancial.com

rr_BarChartClosingTextBlock

BEST QUARTER	WORST QUARTER
13.07%	(0.18)%
(3/31/2019)	(9/30/2019)

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 Institutional Shares only. After tax returns for Investor Shares will vary.

dei_TradingSymbol

MSVIX

rr_ManagementFeesOverAssets

0.75%

rr_OtherExpensesOverAssets

2.90%

^[7]

rr_FeeWaiverOrReimbursementOverAssets

(2.67%)

^[10]

Highest Quarterly Return, Date

rr_ExpenseExampleYear01

$ 100

Five Years

rr_ExpenseExampleYear05

1,660

Annual Return 2019

rr_AnnualReturn2019

23.03%

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2019

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

WORST QUARTER

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(0.18%)

rr_AverageAnnualReturnYear01

23.03%

rr_AverageAnnualReturnInceptionDate

Dec. 19, 2018

Redemption Fee (as a percentage of amount redeemed)

rr_ProspectusLineItems

rr_RedemptionFeeOverRedemption

(1.00%)

^[5]

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements

rr_ExpensesOverAssets

3.90%

rr_NetExpensesOverAssets

1.23%

rr_ExpenseExampleYear03

944

Ten Years

rr_ExpenseExampleYear10

$ 3,953

rr_AverageAnnualReturnYear01

22.91%

rr_AverageAnnualReturnInceptionDate

Dec. 19, 2018

rr_ProspectusLineItems

rr_AverageAnnualReturnYear01

19.69%

rr_AverageAnnualReturnInceptionDate

Dec. 19, 2018

rr_ProspectusLineItems

rr_AverageAnnualReturnYear01

14.53%

rr_AverageAnnualReturnInceptionDate

Dec. 19, 2018

rr_ProspectusLineItems

rr_AverageAnnualReturnYear01

22.39%

rr_AverageAnnualReturnInceptionDate

Dec. 19, 2018

Shareholder Fees Caption [Text]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fund Fees and Expenses

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

January 31, 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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in total annual Fund operating expenses or in the example, affect the Fund’s performance. For the fiscal period from January 16, 2019 (commencement of Fund operations) to September 30, 2019, the Fund’s portfolio turnover rate was 65% 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 in the Fund

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the Fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Once the Fund has completed a full calendar year of operations, a bar chart and table will be included that will provide some indication of the risks of investing in the Fund by showing the variability of the Fund’s returns and comparing the Fund’s performance to a broad measure of market performance.

rr_PerformanceAvailabilityPhone

1-833-810-7345

rr_PerformancePastDoesNotIndicateFuture

Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Redemption Fee (as a percentage of amount redeemed)

rr_ProspectusLineItems

rr_RedemptionFeeOverRedemption

(2.00%)

^[11]

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Operating Expenses

rr_Component3OtherExpensesOverAssets

0.62%

Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements

rr_ExpensesOverAssets

1.72%

rr_NetExpensesOverAssets

1.24%

rr_ExpenseExampleYear03

495

Ten Years

rr_ExpenseExampleYear10

$ 1,990

Redemption Fee (as a percentage of amount redeemed)

rr_ProspectusLineItems

rr_RedemptionFeeOverRedemption

(2.00%)

^[11]

rr_DistributionAndService12b1FeesOverAssets

none

Other Operating Expenses

rr_Component3OtherExpensesOverAssets

0.62%

Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements

rr_ExpensesOverAssets

1.47%

rr_NetExpensesOverAssets

0.99%

rr_ExpenseExampleYear03

418

Ten Years

rr_ExpenseExampleYear10

$ 1,716

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fund Fees and Expenses

rr_OperatingExpensesCaption

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

rr_PortfolioTurnoverHeading

Portfolio Turnover

rr_PortfolioTurnoverRate

106.00%

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 (including one year of capped expenses in each period) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in equity securities of emerging market companies, and in other instruments, principally derivatives and shares of investment companies (including exchange-traded funds (“ETFs”)), that have economic characteristics similar to such securities. This investment policy may be changed by the Fund upon 60 days’ prior written notice to shareholders.

The equity securities in which the Fund invests are primarily publicly traded common stocks, but may also include private placements; rights and warrants; depositary receipts (including American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”)), which are certificates typically issued by a bank or trust company that represent ownership interests in securities of non-U.S. companies; and securities immediately convertible into equity securities (principally bonds and preferred stock that are immediately convertible into common stock). The Fund may also invest in “out-of-the-money” convertible securities and may invest in securities of companies with any market capitalization.

The Fund considers a company to be an emerging market company if, at the time of purchase: (i) at least 50% of the company’s assets are located in emerging or frontier market countries; (ii) at least 50% of the company’s revenue is generated in emerging or frontier market countries; or (iii) the company maintains its principal place of business in an emerging or frontier market country. The Fund considers emerging market countries to be: (i) countries that have an “emerging stock market” in a “developing economy” as defined by the International Finance Corporation; (ii) countries that have “low or middle economies” according to the World Bank; (iii) countries listed in a World Bank publication as “developing”; (iv) countries considered “industrially developing countries” by the International Monetary Fund; and (v) other countries that have similar characteristics, as determined by the Adviser. The Fund considers frontier market countries to be countries included in the MSCI Frontier Markets Index and other countries that have similar characteristics, as determined by the Adviser. Under normal circumstances, the Fund invests in at least three emerging or frontier market countries. From time to time, the Fund may focus its investments in a particular country, such as the People’s Republic of China (“China”).

The Fund may utilize derivatives, principally equity-linked notes (including participation notes and other instruments whose return is determined by the performance of a single equity security, a basket of equity securities or an equity index) and swaps, to seek to replicate equity exposure in certain foreign markets where direct investment is either impossible or difficult due to local investment restrictions. For purposes of the Fund’s 80% investment policy, the Fund generally values its derivative instruments using the market values of the investments, but reserves the right to use an investment’s notional value, where determined appropriate in the Adviser’s discretion.

In selecting investments for the Fund, the Adviser implements its “Growth At A Reasonable Price” investment philosophy by combining top-down analyses of economic, political and social factors with bottom-up quantitative and qualitative fundamental research to seek to identify countries, sectors and companies with attractive risk/return profiles based, in part, on the Adviser’s experience investing in a wide range of markets at various stages of development. The Adviser may adjust the Fund’s portfolio to manage its liquidity and position sizing, and may sell a security that reaches its price target, or that is negatively impacted by changes in macroeconomic conditions or geographic, sector or issuer specific factors.

rr_RiskNarrativeTextBlock

As with all mutual funds, there is no guarantee that the Fund will achieve its investment objective. You could lose money by investing in the Fund. A Fund share is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any other government agency. The principal risk factors affecting shareholders’ investments in the Fund are set forth below.

Equity Risk — Since it purchases equity securities, the Fund is subject to the risk that stock prices may fall over short or extended periods of time. Historically, the equity market has moved in cycles, and the value of the Fund’s securities may fluctuate from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response. These factors contribute to price volatility, which is the principal risk of investing in the Fund.

Foreign Company Risk — Investing in foreign companies, including direct investments and investments through depositary receipts, poses additional risks since political and economic events unique to a country or region will affect those markets and their issuers. These risks will not necessarily affect the U.S. economy or similar issuers located in the United States. Securities of foreign companies may not be registered with the U.S. Securities and Exchange Commission (the “SEC”) and foreign companies are generally not subject to the regulatory controls imposed on U.S. issuers and, as a consequence, there is generally less publicly available information about foreign securities than is available about domestic securities. Income from foreign securities owned by the Fund may be reduced by a withholding tax at the source, which tax would reduce income received from the securities comprising the portfolio. Foreign securities may also be more difficult to value than securities of U.S. issuers. While depositary receipts provide an alternative to directly purchasing the underlying foreign securities in their respective national markets and currencies, investments in depositary receipts continue to be subject to many of the risks associated with investing directly in foreign securities.

Emerging and Frontier Markets Securities Risk — The Fund’s investments in emerging or frontier markets securities are considered speculative and subject to heightened risks in addition to the general risks of investing in foreign securities. Unlike more established markets, emerging and frontier markets may have governments that are less stable, markets that are less liquid and economies that are less developed. In addition, the securities markets of emerging and frontier market countries may consist of companies with smaller market capitalizations and may suffer periods of relative illiquidity; significant price volatility; restrictions on foreign investment; and possible restrictions on repatriation of investment income and capital. Furthermore, foreign investors may be required to register the proceeds of sales, and future economic or political crises could lead to price controls, forced mergers, expropriation or confiscatory taxation, seizure, nationalization or creation of government monopolies.

Foreign Currency Risk — As a result of the Fund’s investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedged positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected.

Geographic Focus Risk — To the extent that it focuses its investments in a particular country or geographic region, the Fund may be more susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries within that country or geographic region. As a result, the Fund may be subject to greater price volatility and risk of loss than a fund holding more geographically diverse investments.

Risk of Investing in China — The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represents a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests.

Small- and Mid-Capitalization Company Risk — The small- and mid-capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, investments in these small and medium-sized companies may pose additional risks, including liquidity risk, because these companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small- and mid-capitalization stocks may be more volatile than those of larger companies. These securities may be traded over-the-counter or listed on an exchange.

Private Placements Risk — Investment in privately placed securities may be less liquid than investments in publicly traded securities. Although these securities may be resold in privately negotiated transactions, the prices realized from these sales could be less than those originally paid by the Fund or less than what may be considered the fair value of such securities. Further, companies whose securities are not publicly traded may not be subject to the disclosure and other investor protection requirements that might be applicable if their securities were publicly traded.

Rights and Warrants Risk — Investments in rights or warrants involve the risk of loss of the purchase value of a right or warrant if the right to subscribe to additional shares is not exercised prior to the right’s or warrant’s expiration. Also, the purchase of rights and/or warrants involves the risk that the effective price paid for the right and/or warrant added to the subscription price of the underlying security may exceed the market price of the underlying security in instances such as those where there is no movement in the price of the underlying security.

Risks of Investing in Other Investment Companies — To the extent that the Fund invests in other investment companies, such as open-end funds, closed-end funds and ETFs, the Fund will be subject to substantially the same risks as those associated with the direct ownership of the securities held by such other investment companies. As a shareholder of another investment company, the Fund relies on that investment company to achieve its investment objective. If the investment company fails to achieve its objective, the value of the Fund’s investment could decline, which could adversely affect the Fund’s performance. By investing in another investment company, Fund shareholders indirectly bear the Fund’s proportionate share of the fees and expenses of the other investment company, in addition to the fees and expenses that Fund shareholders directly bear in connection with the Fund’s own operations.

Because ETFs and certain closed-end funds are listed on national stock exchanges and are traded like stocks listed on an exchange, their shares potentially may trade at a discount or premium. Investments in ETFs and certain closed-end funds are also subject to brokerage and other trading costs, which could result in greater expenses to the Fund. In addition, because the value of ETF and certain closed-end fund shares depends on the demand in the market, the Adviser may not be able to liquidate the Fund’s holdings at the most optimal time, which could adversely affect Fund performance.

Derivatives Risk — The Fund’s use of equity-linked notes and swaps for all purposes, including speculative purposes, is subject to market risk, correlation risk, credit risk, valuation risk and liquidity risk. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly or at all with the underlying asset, rate or index. Credit risk is the risk that the counterparty to a derivative contract will default or otherwise become unable to honor a financial obligation. Valuation risk is the risk that the derivative may be difficult to value. Liquidity risk is described below. The Fund’s use of swaps is also subject to leverage risk. Leverage risk is the risk that the use of leverage may amplify the effects of market volatility on the Fund’s share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument.

Liquidity Risk — Certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to accept a lower price to sell a security, sell other securities to raise cash, or give up an investment opportunity, any of which could have a negative effect on Fund management or performance.

Investment Style Risk — The Fund pursues a “growth style” of investing, meaning that the Fund invests in equity securities of companies that the Adviser believes will have above-average rates of earnings growth and which, therefore, may experience above-average increases in stock prices. Over time, a growth investing style may go in and out of favor, causing the Fund to sometimes underperform other equity funds that use differing investing styles.

Convertible Securities Risk — The value of a convertible security is influenced by changes in interest rates (with investment value declining as interest rates increase and increasing as interest rates decline) and the credit standing of the issuer. The price of a convertible security will also normally vary in some proportion to changes in the price of the underlying common stock because of the conversion or exercise feature.

LIBOR Replacement Risk — The elimination of the London Inter-Bank Offered Rate (“LIBOR”) may adversely affect the interest rates on, and value of, certain Fund investments for which the value is tied to LIBOR. The U.K. Financial Conduct Authority has announced that it intends to stop compelling or inducing banks to submit LIBOR rates after 2021. However, it remains unclear if LIBOR will continue to exist in its current, or a modified, form. Alternatives to LIBOR are established or in development in most major currencies, including the Secured Overnight Financing Rate (“SOFR”), which is intended to replace U.S. dollar LIBOR. Markets are slowly developing in response to these new rates. Questions around liquidity impacted by these rates, and how to appropriately adjust these rates at the time of transition, remain a concern for the Fund. Accordingly, it is difficult to predict the full impact of the transition away from LIBOR on the Fund until new reference rates and fallbacks for both legacy and new products, instruments and contracts are commercially accepted.

rr_RiskNotInsuredDepositoryInstitution

A Fund share is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any other government agency.

rr_PerformanceNarrativeTextBlock

The bar chart and the performance table below illustrate the risks and volatility of an investment in the Fund by showing changes in the Institutional Class Shares’ performance from year to year and by showing how the Fund’s average annual total returns for 1 year and since inception compare with those of a broad measure of market performance. Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Class N Shares had not commenced operations as of the date of this prospectus. Therefore, performance information for Class N Shares is not presented. Class N Shares would have substantially similar performance as Institutional Class Shares because the shares are invested in the same portfolio of securities and the returns would generally differ only to the extent that expenses of Class N Shares are higher than the expenses of Institutional Class Shares, in which case the returns for Class N Shares would be lower than those of Institutional Class Shares.

Updated performance information is available on the Fund’s website at https://www.rwcpartners.com/us/ or by calling 1-855-RWC-FUND.

rr_PerformanceAvailabilityPhone

1-855-RWC-FUND

Performance Table Heading

rr_PerformancePastDoesNotIndicateFuture

Of course, the Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

rr_PerformanceTableHeading

Average Annual Total Returns for Periods Ended December 31, 2019

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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 (“IRAs”).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

This table compares the Fund’s average annual total returns for the periods ended December 31, 2019 to those of an appropriate broad-based index.

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. 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 Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”). After-tax returns are shown for Institutional Class Shares only. After-tax returns for Class I Shares will vary.

rr_ProspectusLineItems

Shareholder Servicing Fee

rr_ManagementFeesOverAssets

0.90%

rr_Component2OtherExpensesOverAssets

0.15%

rr_OtherExpensesOverAssets

0.54%