This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (the "Shares"). You may qualify for sales charge discounts if you invest, or agree to invest in the future, at least $25,000 in Class A Shares or at least $250,000 in Class T Shares of the Fund. More information about these and other discounts is available from your financial professional, in the section of the Prospectus entitled "Shareholder Information – Sales Charges" and in the section of the Fund's Statement of Additional Information ("SAI") entitled "Purchase and Redemption Information – Reducing or Eliminating the Front-End Sales Charge." Financial intermediaries may impose different sales charge waivers for Class A Shares and Class T Shares, and these variations are described in Appendix A of the Prospectus.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

none

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

rr_OtherExpensesNewFundBasedOnEstimates

"Other Expenses" for Class T Shares are estimated for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example, No Redemption Narrative [Text Block]

rr_ExpenseExampleNoRedemptionNarrativeTextBlock

You would pay the following expenses on Class C Shares if you did not redeem your shares at the end of the period:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund seeks to achieve its investment objective by allocating its assets between a "Managed Futures" strategy and a "Fixed Income" strategy.

The Managed Futures strategy will be achieved by the Fund investing up to 25% of its total assets in Abbey Capital Offshore Fund Limited, a wholly-owned and controlled subsidiary of the Fund organized under the laws of the Cayman Islands (the "Subsidiary"). The Adviser may allocate assets of the Subsidiary to a single Managed Futures portfolio or multiple Managed Futures portfolios that include investment styles or sub-strategies such as (i) trend following, (ii) discretionary, fundamentals-based investing with a focus on macroeconomic analysis, (iii) strategies that pursue both fundamental and technical trading approaches, (iv) other specialized approaches to specific or individual market sectors such as equities, interest rates, metals, agricultural and soft commodities and (v) systematic trading strategies which incorporate technical and fundamental variables.

The Managed Futures strategy investments are designed to achieve capital appreciation in the financial and commodities futures markets. The Adviser intends to allocate the assets of the Subsidiary to one or more Trading Advisers to manage in percentages determined at the discretion of the Adviser. Each Trading Adviser invests according to a Managed Futures strategy in one or a combination of (i) options, (ii) futures, (iii) forwards, (iv) spot contracts or (v) swaps, including total return swaps, each of which may be tied to (i) commodities, (ii) financial indices and instruments, (iii) foreign currencies, or (iv) equity indices. Each current Trading Adviser is registered with the U.S. Commodity Futures Trading Commission (the "CFTC") as a Commodity Trading Advisor. Trading Advisers that are not registered with the SEC as investment advisers provide advice only regarding matters that do not involve securities.

The Fixed Income strategy invests the Fund's assets primarily in investment grade fixed income securities (of all durations and maturities) in order to generate interest income and capital appreciation, which may add diversification to the returns generated by the Fund's Managed Futures strategy. The Fund must set aside liquid assets, or engage in other SEC or staff-approved measures, to "cover" open positions with respect to certain kinds of derivative instruments. The Fixed Income strategy investments may be used to help cover the Fund's derivative positions.

The Fund's Adviser seeks returns, in part, by (i) using Managed Futures strategy investments that are not expected to have returns that are highly correlated to the broad equity market and (ii) through actively managed Fixed Income strategy investments that are not expected to have returns that are highly correlated to the broad equity market or the Managed Futures strategy. The Adviser believes that utilizing non-correlated strategies may mitigate losses in generally declining markets. However, there can be no assurance that losses will be avoided. Investment strategies that have historically been non-correlated or demonstrated low correlations to one another or to major world financial market indices may become correlated at certain times, such as during a liquidity crisis in global financial markets.

The trading strategies employ several different trading styles using different research and trading methodologies, in a wide range of global financial and commodity markets operating over multiple time frames. Many of the styles use systematic, automated trading systems, using a combination of mathematical, statistical, technical analysis, pattern recognition and macroeconomic models aimed at profiting from market trends of different durations. Trading Advisers may use discretionary approaches aimed at identifying value investments and turning points in trends. All Trading Advisers utilize a disciplined approach to risk management. The Adviser and Trading Advisers from time to time will employ hedging techniques. Key principles of the Fund's sell discipline include predetermined relative-value objectives for sectors, issuers and specific securities, pricing performance or fundamental performance that varies from expectations, deteriorating fundamentals, overvaluation and alternative investments offering the opportunity to achieve more favorable risk-adjusted returns.

The markets traded include bonds, money markets, foreign exchange markets and commodity markets. Most of the trading is done in derivative markets, usually listed futures markets, but some trading in cash markets may take place when this is the most effective way to enter or exit a trading position. Both long and short positions will be taken in all markets traded. Contracts are positioned either long or short based on various characteristics related to their prices. For example, the Fund may short a particular underlying security or instrument if the Adviser or a Trading Adviser believes the price of the underlying security or instrument will decrease. The Fund invests in U.S. and non-U.S. markets and in developed and emerging markets.

As much of the trading within the Fund is in futures markets, the Fund is likely to have cash balances surplus to margin requirements. The cash portfolio will be invested on a short-term, highly liquid, basis, to meet margin calls on the futures positions.

The Fund is "non-diversified" for purposes of the Investment Company Act of 1940, as amended, (the "1940 Act") which means that the Fund may invest in fewer securities at any one time than a diversified fund. The Fund may not invest more than 15% of its net assets in illiquid securities. The Fund's investments in certain derivative instruments and its short selling activities involve the use of leverage.

Generally, the Subsidiary invests primarily in commodity futures, but it may also invest in financial futures, option and swap contracts, fixed income securities, pooled investment vehicles, including those that are not registered pursuant to the 1940 Act and other investments intended to serve as margin or collateral for the Subsidiary's derivative positions. The Fund invests in the Subsidiary in order to gain exposure to the commodities markets within the limitations of the federal tax laws, rules and regulations that apply to registered investment companies. Unlike the Fund, the Subsidiary may invest without limitation in commodity-linked derivatives, however, the Subsidiary complies with the same 1940 Act asset coverage requirements with respect to its investments in commodity-linked derivatives that are applicable to the Fund's transactions in derivatives. The Fund complies with Section 8 and Section 18 of the 1940 Act, governing investment policies and capital structure and leverage, respectively, on an aggregate basis with the Subsidiary. The Subsidiary also complies with Section 17 of the 1940 Act relating to affiliated transactions and custody.

In addition, to the extent applicable to the investment activities of the Subsidiary, the Subsidiary is subject to the same fundamental investment restrictions and will follow the same compliance policies and procedures as the Fund. Unlike the Fund, the Subsidiary will not seek to qualify as a regulated investment company ("RIC") under Subchapter M of Subtitle A, Chapter 1, of the Internal Revenue Code of 1986, as amended (the "Code"). The Fund is the sole shareholder of the Subsidiary and does not expect shares of the Subsidiary to be offered or sold to other investors.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Risk is inherent in all investing. The value of your investment in the Fund, as well as the amount of return you receive on your investment, may fluctuate significantly from day to day and over time. You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.

The principal risk factors affecting shareholders' investments in the Fund (and, indirectly, in the Subsidiary) are set forth below.

• Commodity Sector Risk: Exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. The prices of energy, industrial metals, precious metals, agriculture and livestock sector commodities may fluctuate widely due to factors such as changes in value, supply and demand and governmental regulatory policies. The commodity-linked securities in which the Fund invests may be issued by companies in the financial services sector, and events affecting the financial services sector may cause the Fund's Share value to fluctuate.

• Counterparty Risk: Counterparty risk is the risk that the other party(s) to an agreement or a participant to a transaction, such as a broker or the FCM, might default on a contract or fail to perform by failing to pay amounts due or failing to fulfill the obligations of the contract or transaction.

• Credit Risk: Credit risk refers to the possibility that the issuer of the security will not be able to make principal and interest payments when due. Changes in an issuer's credit rating or the market's perception of an issuer's creditworthiness may also affect the value of the Fund's investment in that issuer. Securities rated in the four highest categories by the rating agencies are considered investment grade but they may also have some speculative characteristics. Investment grade ratings do not guarantee that bonds will not lose value.

• Currency Risk: Investment in foreign securities also involves currency risk associated with securities that trade or are denominated in currencies other than the U.S. dollar and which may be affected by fluctuations in currency exchange rates. An increase in the strength of the U.S. dollar relative to a foreign currency may cause the U.S. dollar value of an investment in that country to decline. Foreign currencies also are subject to risks caused by inflation, interest rates, budget deficits and low savings rates, political factors and government controls. Forward foreign currency exchange contracts may limit potential gains from a favorable change in value between the U.S. dollar and foreign currencies. Unanticipated changes in currency pricing may result in poorer overall performance for the Fund than if it had not engaged in these contracts.

• Derivatives Risk: The Fund's investments in derivative instruments including options, forward currency exchange contracts, swaps and futures, which may be leveraged, may result in losses. Investments in derivative instruments may result in losses exceeding the amounts invested.

• Emerging Markets Risk: Investment in emerging market securities involves greater risk than that associated with investment in foreign securities of developed foreign countries. These risks include volatile currency exchange rates, periods of high inflation, increased risk of default, greater social, economic and political uncertainty and instability, less governmental supervision and regulation of securities markets, weaker auditing and financial reporting standards, lack of liquidity in the markets, and the significantly smaller market capitalizations of emerging market issuers.

• Fixed Income Securities Risk: Fixed income securities in which the Fund may invest are subject to certain risks, including: interest rate risk, prepayment risk and credit/default risk. Interest rate risk involves the risk that prices of fixed income securities will rise and fall in response to interest rate changes. Prepayment risk involves the risk that in declining interest rate environments prepayments of principal could increase and require the Fund to reinvest proceeds of the prepayments at lower interest rates. Credit risk involves the risk that the credit rating of a security may be lowered.

• Foreign Investments Risk: International investing is subject to special risks, including currency exchange rate volatility, political, social or economic instability, and differences in taxation, auditing and other financial practices. The Fund may invest in securities of foreign issuers either directly or through depositary receipts. Depositary receipts may be available through "sponsored" or "unsponsored" facilities. Holders of unsponsored depositary receipts generally bear all of the costs of the unsponsored facility. The depository of an unsponsored facility is frequently under no obligation to distribute shareholder communications received from the issuer of the deposited security or to pass through, to the holders of the receipts, voting rights with respect to the deposited securities. The depository of unsponsored depositary receipts may provide less information to receipt holders.

• Forward and Futures Risk: The successful use of forward and futures contracts draws upon the Adviser's and Trading Advisers' skill and experience with respect to such instruments and are subject to special risk considerations. The primary risks associated with the use of futures contracts are (a) the imperfect correlation between the change in market value of instruments held by the Fund and the price of the forward or futures contract; (b) possible lack of a liquid secondary market, and possible regulatory position limits and restrictions, for a forward or futures contract and the resulting inability to close a forward or futures contract when desired; (c) losses caused by unanticipated market movements, which are potentially unlimited; (d) the Adviser's and Trading Advisers' inability to predict correctly the direction of securities prices, interest rates, currency exchange rates and other economic factors; (e) the possibility that the counterparty will default in the performance of its obligations; and (f) if the Fund has insufficient cash, it may have to sell securities from its portfolio to meet daily variation margin requirements, and the Fund may have to sell securities at a time when it may be disadvantageous to do so.

• Hedging Transactions Risk: The Adviser and Trading Advisers from time to time employ various hedging techniques. The success of the Fund's hedging strategy will be subject to the Adviser's and Trading Advisers' ability to correctly assess the degree of correlation between the performance of the instruments used in the hedging strategy and the performance of the investments in the portfolio being hedged. Since the characteristics of many securities change as markets change or time passes, the success of the Fund's hedging strategy will also be subject to the Adviser's and Trading Advisers' ability to continually recalculate, readjust, and execute hedges in an efficient and timely manner. For a variety of reasons, the Adviser and Trading Advisers may not seek to establish a perfect correlation between such hedging instruments and the portfolio holdings being hedged. Such imperfect correlation may prevent the Fund from achieving the intended hedge or expose the Fund to risk of loss. In addition, it is not possible to hedge fully or perfectly against any risk, and hedging entails its own cost.

• High Portfolio Turnover Risk: The risk that when investing on a shorter-term basis, the Fund may as a result trade more frequently and incur higher levels of brokerage fees and commissions, and cause higher levels of current tax liability to shareholders in the Fund.

• Interest Rate Risk: Interest rate risk is the risk that prices of fixed income securities generally increase when interest rates decline and decrease when interest rates increase. The Fund may lose money if short term or long term interest rates rise sharply or otherwise change in a manner not anticipated by the Adviser and Trading Advisers. It is likely there will be less governmental action in the near future to maintain low interest rates. The negative impact on fixed income securities from the resulting rate increases for that and other reasons could be swift and significant.

• Leveraging Risk: Investments in derivative instruments may give rise to a form of leverage. Trading Advisers may engage in speculative transactions which involve substantial risk and leverage, such as making short sales. The use of leverage by the Adviser and Trading Advisers may increase the volatility of the Fund. These leveraged instruments may result in losses to the Fund or may adversely affect the Fund's net asset value ("NAV") or total return, because instruments that contain leverage are more sensitive to changes in interest rates. The Fund may also have to sell assets at inopportune times to satisfy its obligations in connection with such transactions.

• Manager Risk: If the Adviser and Trading Advisers make poor investment decisions, it will negatively affect the Fund's investment performance.

• Management Risk: The Fund is subject to the risk of poor stock selection. In other words, the individual stocks in the Fund may not perform as well as expected, and/or the Fund's portfolio management practices do not work to achieve their desired result.

• Market Risk: The NAV of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money.

• Multi-Manager Dependence Risk: The success of the Fund's investment strategy depends both on the Adviser's ability to select Trading Advisers and to allocate assets to those Trading Advisers and on each Trading Adviser's ability to execute the relevant strategy and select investments for the Fund and the Subsidiary. The Trading Advisers' investment styles may not always be complementary, which could adversely affect the performance of the Fund.

• New Adviser Risk: The Trading Advisers may be newly registered or not registered with the SEC and/or have not previously managed a mutual fund. Accordingly, investors in the Fund bear the risk that a Trading Adviser's inexperience may limit its effectiveness.

• Non-Diversification Risk: The Fund is non-diversified. Compared to other funds, the Fund may invest more of its assets in a smaller number of companies. Gains or losses on a single stock may have greater impact on the Fund.

• Quantitative Trading Strategies Risk: The Adviser and Trading Advisers may use quantitative methods to select investments. Securities or other investments selected using quantitative methods may perform differently from the market as a whole or from their expected performance for many reasons, including factors used in building the quantitative analytical framework, the weights placed on each factor, and changing sources of market returns, among others. Any errors or imperfections in quantitative analyses or models, or in the data on which they are based, could adversely affect the ability of the Adviser or a Trading Adviser to use such analyses or models effectively, which in turn could adversely affect the Fund's performance. There can be no assurance that these methodologies will help the Fund to achieve its investment objective.

• Short Sales Risk: Short sales of securities may result in gains if a security's price declines, but may result in losses if a security's price rises. In a rising market, short positions may be more likely to result in losses because securities sold short may be more likely to increase in value. Short selling also involves the risks of: increased leverage, and its accompanying potential for losses; the potential inability to reacquire a security in a timely manner, or at an acceptable price; the possibility of the lender terminating the loan at any time, forcing the Fund to close the transaction under unfavorable circumstances; the additional costs that may be incurred; and the potential loss of investment flexibility caused by the Fund's obligations to provide collateral to the lender and set aside assets to cover the open position. The Fund may engage in short sales that are either "uncovered" or "against the box." A short sale is "against the box" if at all times during which the short position is open, the Fund owns at least an equal amount of the securities or securities convertible into, or exchangeable without further consideration for, securities of the same issue as the securities that are sold short. Short sales "against the box" may protect the Fund against the risk of losses in the value of a portfolio security because any decline in value of the security should be wholly or partially offset by a corresponding gain in the short position. Any potential gains in the security, however, would be wholly or partially offset by a corresponding loss in the short position. Short sales that are not "against the box" involve a form of investment leverage, and the amount of the Fund's loss on a short sale is potentially unlimited.

• Subsidiary Risk: By investing in the Subsidiary, the Fund is indirectly exposed to the risks associated with the Subsidiary's investments. The derivatives and other investments held by the Subsidiary are generally similar to those that are permitted to be held by the Fund and are subject to the same risks that apply to similar investments if held directly by the fund. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to all the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands could result in the inability of the Fund and/or the Subsidiary to continue to operate as it does currently and could adversely affect the Fund.

• Tax Risk: In order to qualify as a RIC, the Fund must meet certain requirements regarding the source of its income, the diversification of its assets and the distribution of its income. Under the test regarding the source of a RIC's income, at least 90% of the gross income of the RIC each year must be qualifying income, which consists of dividends, interest, gains on investment assets and other categories of investment income. In 2006, the Internal Revenue Service ("IRS") published a ruling that income realized from swaps with respect to a commodities index would not be qualifying income. The Fund's investment in the Subsidiary is expected to provide the Fund with exposure to the commodities markets within the limitations of the Code for qualification as a RIC, but there is a risk that the IRS could assert that the income derived from the Fund's investment in the Subsidiary and certain commodity-linked structured notes will not be considered qualifying income for purposes of the Fund remaining qualified as a RIC for U.S. federal income tax purposes. In addition, pursuant to recent guidance issued by the Treasury and the IRS, the Subsidiary's commodity related income for a taxable year will only be treated as qualifying income to the extent the Subsidiary actually distributes such income out of its earnings and profits to the Fund for such taxable year. If the Fund were to fail to qualify as a RIC and became subject to federal income tax, shareholders of the Fund would be subject to diminished returns. Changes in the laws of the United States and/or the Cayman Islands could result in the inability of the Fund and/or its Subsidiary to operate as described in this Prospectus and the SAI and could adversely affect the Fund. For example, the Cayman Islands does not currently impose any income, corporate or capital gains tax or withholding tax on the Subsidiary. If Cayman Islands law changes such that the Subsidiary must pay Cayman Islands taxes, Fund shareholders would likely suffer decreased investment returns.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Fund is non-diversified. Compared to other funds, the Fund may invest more of its assets in a smaller number of companies. Gains or losses on a single stock may have greater impact on the Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart below shows the performance of the Fund's Class I Shares from year to year. Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.abbeycapital.com or by calling 1-844-261-6484 (toll free).

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-844-261-6484

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period shown in the chart, the highest quarterly return was 8.86% (for the quarter ended March 31, 2015) and the lowest quarterly return was -4.90% (for the quarter ended June 30, 2015). The year-to-date total return for the nine months ended September 30, 2017 was -4.99%.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Class I Shares only.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns of the Class I Shares, Class A Shares and Class C Shares for one year and since inception to a broad-based market index for the same periods. Average annual returns for Class T Shares are not included because they had not commenced operations prior to the date of this Prospectus. The returns for Class T Shares would be substantially similar to returns for Class I Shares because the shares are invested in the same portfolio of securities, and would differ only to the extent that the classes have different expenses.

Risk Return Abstract

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Management Fees

rr_ManagementFeesOverAssets

1.77%

^[1],[2]

Other Expenses

rr_OtherExpensesOverAssets

0.16%

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

^[3]

One Year

rr_ExpenseExampleYear01

$ 18,187

Five Years

rr_ExpenseExampleYear05

102,891

Annual Return 2015

rr_AnnualReturn2015

4.12%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(4.99%)

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2015

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.90%)

Since Inception

rr_AverageAnnualReturnSinceInception

7.14%

Trading Symbol

dei_TradingSymbol

ABYAX

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

^[4]

Redemption Fee (as a percentage of amount redeemed, if applicable)

rr_RedemptionFeeOverRedemption

none

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

2.18%

Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.04%

^[3]

One Year

rr_ExpenseExampleYear01

770

Five Years

rr_ExpenseExampleYear05

1,665

1 Year

rr_AverageAnnualReturnYear01

(9.60%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 29, 2014

Risk Return Abstract

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Management Fees

rr_ManagementFeesOverAssets

1.77%

^[1],[2]

Other Expenses

rr_OtherExpensesOverAssets

0.16%

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

^[3]

One Year

rr_ExpenseExampleYear01

$ 382

Five Years

rr_ExpenseExampleYear05

1,530

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

282

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,530

1 Year

rr_AverageAnnualReturnYear01

(4.72%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 06, 2015

Risk Return Abstract

rr_RiskReturnAbstract

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of amount redeemed, if applicable)

rr_RedemptionFeeOverRedemption

none

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

2.18%

Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.04%

^[3]

One Year

rr_ExpenseExampleYear01

452

Five Years

rr_ExpenseExampleYear05

1,378

1 Year

rr_AverageAnnualReturnYear01

(3.81%)

^[7]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2014

^[7]

Risk Return Abstract

rr_RiskReturnAbstract

Since Inception

rr_AverageAnnualReturnSinceInception

5.31%

^[7]

1 Year

rr_AverageAnnualReturnYear01

11.96%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2014

Risk Return Abstract

rr_RiskReturnAbstract

Since Inception

rr_AverageAnnualReturnSinceInception

7.11%

1 Year

rr_AverageAnnualReturnYear01

11.96%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 06, 2015

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

88.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund by illustrating the variability of the Fund's returns. The chart assumes reinvestment of dividends and distributions. The bar chart shows changes in the Fund's performance from year to year. Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available by calling 1-844-261-6482 (toll free).

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-844-261-6482

Bar Chart [Heading]

rr_BarChartHeading

Adara Smaller Companies Fund

Total Return For Calendar Year Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

12.45%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2016

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.41%)

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 Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual returns of the Fund for one year and since inception to the average total returns of a broad-based market index for the same periods.

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Exchange Fee

rr_ExchangeFee

none

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

rr_DistributionAndService12b1FeesOverAssets

none

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

^[9]

One Year

rr_ExpenseExampleYear01

$ 97

Five Years

rr_ExpenseExampleYear05

525

Annual Return 2015

rr_AnnualReturn2015

(3.22%)

1 Year

rr_AverageAnnualReturnYear01

19.47%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 21, 2014

Risk Return Abstract

rr_RiskReturnAbstract

Since Inception

rr_AverageAnnualReturnSinceInception

9.53%

1 Year

rr_AverageAnnualReturnYear01

11.02%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 21, 2014

Risk Return Abstract

rr_RiskReturnAbstract

Since Inception

rr_AverageAnnualReturnSinceInception

11.07%

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The investment objective of the Bogle Investment Management Small Cap Growth Fund (the "Fund") is to provide long-term capital appreciation.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

366.41%

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

Therefore, you could lose money by investing in the Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The chart below illustrates the long-term performance of the Fund. The information shows you how the Fund's performance has varied year by year and provides some indication of the risks of investing in the Fund by illustrating the variability of the Fund's returns. The chart assumes reinvestment of dividends and distributions. As with all such investments, past performance (before and after taxes) is not an indication of future results. Performance reflects fee waivers in effect. If fee waivers were not in place, the Fund's performance would be reduced. Updated performance information may be obtained at www.boglefunds.com or by calling 1-877-264-5346.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-877-264-5346

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all such investments, past performance (before and after taxes) is not an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best and Worst Quarterly Performance (for the periods reflected in the chart above):

Best Quarter: 33.34% (quarter ended June 30, 2009)

Worst Quarter: -28.64% (quarter ended December 31, 2008)

Year-to-date total return for the nine months ended September 30, 2017: 12.90%

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2017

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

33.34%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDED DECEMBER 31, 2016

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 (IRA).

Trading Symbol

dei_TradingSymbol

BOGIX

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of amount redeemed, if applicable)

rr_RedemptionFeeOverRedemption

none

Management Fees

rr_ManagementFeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.35%

^[10]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.10%)

^[11]

One Year

rr_ExpenseExampleYear01

$ 127

Five Years

rr_ExpenseExampleYear05

730

Annual Return 2007

rr_AnnualReturn2007

(5.50%)

Annual Return 2009

rr_AnnualReturn2009

45.90%

Annual Return 2011

rr_AnnualReturn2011

(4.88%)

Annual Return 2013

rr_AnnualReturn2013

46.87%

Annual Return 2015

rr_AnnualReturn2015

(7.69%)

1 Year

rr_AverageAnnualReturnYear01

19.77%

10 Years

rr_AverageAnnualReturnYear10

6.30%

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

14.22%

^[12]

1 Year

rr_AverageAnnualReturnYear01

11.19%

^[12]

10 Years

rr_AverageAnnualReturnYear10

4.90%

^[12]

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

14.46%

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION — BOSTON PARTNERS SMALL CAP VALUE FUND II

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks to provide long-term growth of capital primarily through investment in equity securities.

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

24.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors may lose money.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below illustrate the long-term performance of the Boston Partners Small Cap Value Fund II's Institutional Class. The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund. The bar chart assumes reinvestment of dividends and distributions. As with all such investments, past performance (before and after taxes) is not an indication of future results. Performance reflects fee waivers in effect. If fee waivers were not in place, the Fund's performance would be reduced. Updated performance information is available at www.boston-partners.com or 1-888-261-4073.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-261-4073

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all such investments, past performance (before and after taxes) is not an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best and Worst Quarterly Performance (for the periods reflected in the chart above):

Best Quarter:	29.32% (quarter ended June 30, 2009)
Worst Quarter:	-26.32% (quarter ended December 31, 2008)

The year-to-date total return for the nine months ended September 30, 2017 was 6.43%.

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2017

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

29.32%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
for the Periods Ended December 31, 2016

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.

Trading Symbol

dei_TradingSymbol

BPSIX

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

rr_DistributionAndService12b1FeesOverAssets

none

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.19%

Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.11%

Three Years

rr_ExpenseExampleYear03

3,699

Ten Years

rr_ExpenseExampleYear10

$ 14,361

Annual Return 2008

rr_AnnualReturn2008

(34.67%)

Annual Return 2010

rr_AnnualReturn2010

18.50%

Annual Return 2012

rr_AnnualReturn2012

22.87%

Annual Return 2014

rr_AnnualReturn2014

4.21%

Annual Return 2016

rr_AnnualReturn2016

25.97%

5 Years

rr_AverageAnnualReturnYear05

15.76%

1 Year

rr_AverageAnnualReturnYear01

25.32%

^[15]

10 Years

rr_AverageAnnualReturnYear10

7.00%

^[15]

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

12.68%

1 Year

rr_AverageAnnualReturnYear01

31.74%

10 Years

rr_AverageAnnualReturnYear10

6.26%

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

Current income is a secondary objective.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2019

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. During the fiscal year ended August 31, 2017, the portfolio turnover rate for the Fund was 27% of the average value of its portfolio.

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

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

"Other Expenses" includes acquired fund fees and expenses, which are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total annual Fund operating expenses and Total annual Fund operating expenses after fee waiver and/or expense reimbursement shown in the above table will differ from the "Financial Highlights" section of the prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as acquired fund fees and expenses.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $100,000 in the Fund for the time periods indicated and that you sell all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the operating expenses of the Fund remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund pursues its objective by investing, under normal circumstances, at least 80% of its net assets (including borrowings for investment purposes) in a diversified portfolio consisting primarily of equity securities, such as common stocks of issuers across the capitalization spectrum and identified by the Adviser as having value characteristics.

The Adviser examines various factors in determining the value characteristics of such issuers including price to book value ratios and price to earnings ratios. These value characteristics are examined in the context of the issuer's operating and financial fundamentals, such as return on equity and earnings growth and cash flow. The Adviser selects securities for the Fund based on a continuous study of trends in industries and companies, earnings power and growth and other investment criteria.

The Adviser will sell a stock when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the Adviser constantly monitors and adjusts as appropriate.

The Fund may also invest up to 20% of its total assets in non U.S. dollar-denominated securities.

The Fund may invest up to 15% of its net assets in illiquid securities, including securities that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale.

The Fund may participate as a purchaser in initial public offerings of securities ("IPO"). An IPO is a company's first offering of stock to the public.

The Fund may invest up to 10% of its net assets in securities that can be converted into common stock, such as certain debt securities and preferred stock.

The Fund may hedge overall portfolio exposure up to 40% of its net assets through the purchase and sale of index and individual put and call options.

In general, the Fund's investments are broadly diversified over a number of industries and, as a matter of policy, the Fund is limited to investing less than 25% of its total assets in any one industry.

While the Adviser intends to fully invest the Fund's assets at all times in accordance with the above-mentioned policies, the Fund reserves the right to hold up to 100% of its assets, as a temporary defensive measure, in cash and eligible U.S. dollar-denominated money market instruments and make investments inconsistent with its investment objective. The Adviser will determine when market conditions warrant temporary defensive measures.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Management Risk. The Fund is subject to the risk of poor stock selection. In other words, the individual stocks in the Fund may not perform as well as expected, and/or the Fund's portfolio management practices do not work to achieve their desired result.

• Market Risk. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Although the Fund will invest in stocks the Adviser believes to be undervalued, there is no guarantee that the prices of these stocks will not move even lower.

• Foreign Securities Risk. International investing is subject to special risks, including, but not limited to, currency exchange rate volatility, political, social or economic instability, and differences in taxation, auditing and other financial practices.

• Micro-Cap Companies Risk. Micro-cap stocks may be very sensitive to changing economic conditions and market downturns because the issuers often have narrow markets for their products or services, fewer product lines, and more limited managerial and financial resources than larger issuers. The stocks of micro-cap companies may therefore be more volatile and the ability to sell them at a desirable time or price may be more limited.

• Small-Cap Companies Risk. The stocks of smaller companies may be subject to more abrupt, erratic market movements than stocks of larger, more established companies. Small companies may have limited product lines or financial resources, or may be dependent on a small or inexperienced management group, and their securities may trade less frequently and in lower volume than securities of larger companies, which could lead to higher transaction costs. Generally, the smaller the company size, the greater the risk.

• Mid-Cap Companies Risk. The stocks of mid-sized companies may be subject to more abrupt or erratic market movements than stocks of larger, more established companies.

• Convertible Securities Risk. Securities that can be converted into common stock, such as certain securities and preferred stock, are subject to the usual risks associated with fixed income investments, such as interest rate risk and credit risk. In addition, because they react to changes in the value of the equity securities into which they will convert, convertible securities are also subject to the risks associated with equity securities.

• Options Risk. An option is a type of derivative instrument that gives the holder the right (but not the obligation) to buy (a "call") or sell (a "put") an asset in the near future at an agreed upon price prior to the expiration date of the option. The Fund may "cover" a call option by owning the security underlying the option or through other means. The value of options can be highly volatile, and their use can result in loss if the Adviser is incorrect in its expectation of price fluctuations.

• Illiquid Securities Risk. Investing in illiquid securities is subject to certain risks, such as limitations on resale and uncertainty in determining valuation. Limitations on resale may adversely affect the marketability of portfolio securities and the Fund might be unable to dispose of restricted or other illiquid securities promptly or at reasonable prices and might thereby experience difficulty satisfying redemptions within seven days. The Fund might, in order to dispose of restricted securities, have to register securities resulting in additional expense and delay. Adverse market conditions could impede such a public offering of such securities.

• IPO Risk. IPO risk is the risk that the market value of IPO shares will fluctuate considerably due to certain factors, such as the absence of a prior public market, unseasoned trading, the small number of shares available for trading and limited information about the issuer. The purchase of IPO shares may involve high transaction costs. IPO shares are subject to market risk and liquidity risk. When the Fund's asset base is small, a significant portion of the Fund's performance could be attributable to investments in IPOs, because such investments would have a magnified impact on the Fund. As the Fund's assets grow, the effect of the Fund's investments in IPOs on the Fund's performance probably will decline, which could reduce the Fund's performance. Because of the price volatility of IPO shares, the Fund may choose to hold IPO shares for a very short period of time. This may increase the turnover of the Fund's portfolio and may lead to increased expenses to the Fund, such as commissions and transaction costs. In addition, the Adviser cannot guarantee continued access to IPOs.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Bar Chart [Heading]

rr_BarChartHeading

Total Returns for the Calendar Years Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

12.39%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.49%)

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 Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns for the Fund's Institutional Class both before and after taxes for the past calendar year, past five calendar years and past ten calendar years to the average annual total returns of a broad-based securities market index for the same periods.

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

0.70%

^[16]

Other Expenses

rr_OtherExpensesOverAssets

0.19%

^[13]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.08%)

^[17]

One Year

rr_ExpenseExampleYear01

$ 827

Five Years

rr_ExpenseExampleYear05

4,852

Annual Return 2007

rr_AnnualReturn2007

1.47%

Annual Return 2009

rr_AnnualReturn2009

30.97%

Annual Return 2011

rr_AnnualReturn2011

(1.38%)

Annual Return 2013

rr_AnnualReturn2013

39.12%

Annual Return 2015

rr_AnnualReturn2015

0.95%

1 Year

rr_AverageAnnualReturnYear01

14.82%

10 Years

rr_AverageAnnualReturnYear10

8.53%

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

14.76%

^[15]

1 Year

rr_AverageAnnualReturnYear01

9.25%

10 Years

rr_AverageAnnualReturnYear10

6.75%

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

14.81%

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION — BOSTON PARTNERS LONG/SHORT EQUITY FUND

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks long-term capital appreciation while reducing exposure to general equity market risk. The Fund seeks a total return greater than that of the S&P 500^®Index over a full market cycle.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2019

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. During the fiscal year ended August 31, 2017, the portfolio turnover rate for the Fund was 63% of the average value of its portfolio.

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

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

"Other Expenses" includes acquired fund fees and expenses, which are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total annual Fund operating expenses shown in the above table will differ from the "Financial Highlights" section of the prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as acquired fund fees and expenses.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $100,000 in the Fund for the time periods indicated and that you sell all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the operating expenses of the Fund remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund invests in long positions in stocks identified by the Adviser as undervalued and takes short positions in stocks that the Adviser has identified as overvalued. The cash proceeds from short sales will be invested in short-term cash instruments to produce a return on such proceeds just below the federal funds rate. Short sales are considered speculative transactions and a form of leverage. The Fund invests, both long and short, in securities principally traded in the United States markets. The Fund may invest in securities of companies operating for three years or less ("unseasoned issuers"). The Adviser will determine the size of each long or short position by analyzing the tradeoff between the attractiveness of each position and its impact on the risk of the overall portfolio. The Fund seeks to construct a portfolio that has less volatility than the United States equity market generally. The Adviser examines various factors in determining the value characteristics of such issuers including price-to-book value ratios and price-to-earnings ratios. These value characteristics are examined in the context of the issuer's operating and financial fundamentals such as return on equity, earnings growth and cash flow. The Adviser selects securities for the Fund based on a continuous study of trends in industries and companies, earnings power and growth and other investment criteria.

The Fund intends, under normal circumstances, to invest at least 80% of its net assets (including borrowings for investment purposes) in equity securities. Under normal circumstances, the Adviser expects that the Fund's long positions will not exceed approximately 125% of the Fund's net assets.

The Fund's long and short positions may involve (without limit) equity securities of foreign issuers that are traded in the markets of the United States. The Fund may also invest up to 20% of its total assets directly in equity securities of foreign issuers.

To meet margin requirements, redemptions or pending investments, the Fund may also temporarily hold a portion of its assets in full faith and credit obligations of the United States government and in short-term notes, commercial paper or other money market instruments.

The Adviser will sell a stock when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the Adviser constantly monitors and adjusts as appropriate.

The Fund may participate as a purchaser in initial public offerings of securities ("IPO"). An IPO is a company's first offering of stock to the public.

The Fund may invest from time to time a significant portion of its assets in smaller issuers which are more volatile and less liquid than investments in issuers with larger market capitalizations.

The Fund may invest up to 15% of its net assets in illiquid securities, including securities that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale.

In general, the Fund's investments are broadly diversified over a number of industries and, as a matter of policy, the Fund is limited to investing a maximum of 25% of its total assets in any one industry.

The Fund may invest up to 20% of its net assets in high yield debt obligations, such as bonds and debentures, used by corporations and other business organizations. High yield debt obligations are referred to as "junk bonds" and are not considered to be investment grade.

While the Adviser intends to fully invest the Fund's assets at all times in accordance with the above-mentioned policies, the Fund reserves the right to hold up to 100% of its assets, as a temporary defensive measure, in cash and eligible U.S. dollar-denominated money market instruments and make investments inconsistent with its investment objective. The Adviser will determine when market conditions warrant temporary defensive measures.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Market Risk. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Although the long portfolio of the Fund will invest in stocks the Adviser believes to be undervalued, there is no guarantee that the prices of these stocks will not move even lower.

• High Yield Debt Obligations Risk. The Fund may invest up to 20% of its net assets in high yield debt obligations, such as bonds and debentures, issued by corporations and other business organizations. An issuer of debt obligations may default on its obligation to pay interest and repay principal. Also, changes in the financial strength of an issuer or changes in the credit rating of a security may affect its value. Such high yield debt obligations are referred to as "junk bonds" and are not considered to be investment grade.

• Foreign Securities Risk. International investing is subject to special risks, including, but not limited to, currency exchange rate volatility, political, social or economic instability, and differences in taxation, auditing and other financial practices.

• Management Risk. The Fund is subject to the risk of poor stock selection. In other words, the Adviser may not be successful in its strategy of taking long positions in stocks the manager believes to be undervalued and short positions in stocks the manager believes to be overvalued. Further, since the Adviser will manage both a long and a short portfolio, there is the risk that the Adviser may make more poor investment decisions than an adviser of a typical stock mutual fund with only a long portfolio may make.

• Short Sales Risk. Short sales of securities may result in gains if a security's price declines, but may result in losses if a security's price rises.

• Unseasoned Issuers Risk. Unseasoned issuers may not have an established financial history and may have limited product lines, markets or financial resources. Unseasoned issuers may depend on a few key personnel for management and may be susceptible to losses and risks of bankruptcy. As a result, such securities may be more volatile and difficult to sell.

• Small-Cap Companies Risk. The small capitalization equity securities in which the Fund may invest may be traded only in the over-the-counter market or on a regional securities exchange, may be listed only in the quotation service commonly known as the "pink sheets," and may not be traded every day or in the volume typical of trading on a national securities exchange. These securities may also be subject to wide fluctuations in market value. The trading market for any given small capitalization equity security may be sufficiently small as to make it difficult for the Fund to dispose of a substantial block of such securities. The sale by the Fund of portfolio securities to meet redemptions may require the Fund to sell its small capitalization securities at a discount from market prices or during periods when, in the Adviser's judgment, such sale is not desirable. Moreover, the lack of an efficient market for these securities may make them difficult to value.

• Portfolio Turnover Risk. If the Fund frequently trades its portfolio securities, the Fund will incur higher brokerage commissions and transaction costs, which could lower the Fund's performance. In addition to lower performance, high portfolio turnover could result in taxable capital gains. A portfolio turnover rate of 100% is considered to be high. The annual portfolio turnover rate for the Fund is not expected to exceed 400%; however, it may be higher if the Adviser believes it will improve the Fund's performance.

• Segregated Account Risk. A security held in a segregated account cannot be sold while the position it is covering is outstanding, unless it is replaced with a similar security. As a result, there is a possibility that segregation of a large percentage of the Fund's assets could impede portfolio management or the Fund's ability to meet redemption requests or other current obligations.

• Illiquid Securities Risk. Investing in illiquid securities is subject to certain risks, such as limitations on resale and uncertainty in determining valuation. Limitations on resale may adversely affect the marketability of portfolio securities and the Fund might be unable to dispose of restricted or other illiquid securities promptly or at reasonable prices and might thereby experience difficulty satisfying redemptions within seven days. The Fund might, in order to dispose of restricted securities, have to register securities resulting in additional expense and delay. Adverse market conditions could impede such a public offering of such securities.

• IPO Risk. IPO risk is the risk that the market value of IPO shares will fluctuate considerably due to certain factors, such as the absence of a prior public market, unseasoned trading, the small number of shares available for trading and limited information about the issuer. The purchase of IPO shares may involve high transaction costs. IPO shares are subject to market risk and liquidity risk. When the Fund's asset base is small, a significant portion of the Fund's performance could be attributable to investments in IPOs, because such investments would have a magnified impact on the Fund. As the Fund's assets grow, the effect of the Fund's investments in IPOs on the Fund's performance probably will decline, which could reduce the Fund's performance. Because of the price volatility of IPO shares, the Fund may choose to hold IPO shares for a very short period of time. This may increase the turnover of the Fund's portfolio and may lead to increased expenses to the Fund, such as commissions and transaction costs. In addition, the Adviser cannot guarantee continued access to IPOs.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Bar Chart [Heading]

rr_BarChartHeading

Total Returns for the Calendar Years Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

none

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(19.45%)

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 Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns for the Fund's Institutional Class both before and after taxes for the past calendar year, past five calendar years and past ten calendar years to the average annual total returns of a broad-based securities market index for the same periods. Although the Fund compares its average total return to a broad-based securities market index, the Fund seeks returns that are not correlated to securities market returns. The Fund seeks to achieve a 12-15% return over a full market cycle; however, there can be no guarantee that such returns will be achieved.

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

2.25%

Dividend expense on short sales

rbb_DividendExpenseOnShortSales

0.16%

^[18]

Other Expenses

rr_OtherExpensesOverAssets

0.15%

^[19]

One Year

rr_ExpenseExampleYear01

$ 2,841

Five Years

rr_ExpenseExampleYear05

14,840

Annual Return 2007

rr_AnnualReturn2007

(4.24%)

Annual Return 2009

rr_AnnualReturn2009

82.37%

Annual Return 2011

rr_AnnualReturn2011

5.92%

Annual Return 2013

rr_AnnualReturn2013

7.90%

Annual Return 2015

rr_AnnualReturn2015

(1.09%)

1 Year

rr_AverageAnnualReturnYear01

22.48%

10 Years

rr_AverageAnnualReturnYear10

11.00%

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

7.55%

^[15]

1 Year

rr_AverageAnnualReturnYear01

12.72%

10 Years

rr_AverageAnnualReturnYear10

8.12%

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

14.66%

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION — BOSTON PARTNERS LONG/SHORT RESEARCH FUND

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks to provide long-term total return.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2019

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. During the fiscal year ended August 31, 2017, the portfolio turnover rate for the Fund was 54% of the average value of its portfolio.

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

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

"Other Expenses" includes acquired fund fees and expenses, which are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total annual Fund operating expenses shown in the above table will differ from the "Financial Highlights" section of the prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as acquired fund fees and expenses.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $100,000 in the Fund for the time periods indicated and that you sell all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the operating expenses of the Fund remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund uses a hedged strategy. The Fund actively invests in long positions in stocks identified by the Adviser as undervalued and takes short positions in stocks that the Adviser has identified as overvalued. The cash proceeds from short sales (i.e. sales of securities the Fund does not own) are invested in short-term cash instruments to produce a return on such proceeds just below the federal funds rate. Short sales are considered speculative transactions and a form of leverage.

The Fund invests, both long and short, in equity securities issued by large-, mid- and small (or "micro") cap companies, as well as other instruments that are convertible into equity securities. Selling securities short is a form of leverage. Equity securities in which the Fund may invest include exchange-traded and over-the-counter common and preferred stocks, warrants, rights, convertible securities, depositary receipts and shares, trust certificates, limited partnership interests, shares of other investment companies and real estate investment trusts ("REITs"), and equity participations. An equity participation is a type of loan that gives the lender a portion of equity ownership in a property, in addition to principal and interest payments. A convertible security is a bond, debenture, note, preferred stock or other security that may be converted into or exchanged for a prescribed amount of common stock of the same or a different issuer within a particular period of time at a specified price or formula. The Fund may invest in securities of companies operating for three years or less ("unseasoned issuers"). The Fund may also invest in depositary receipts and equity securities of foreign companies (denominated in either U.S. dollars or foreign currencies), put and call options, futures, indexed securities and fixed-income securities (including bonds, notes, asset-backed securities, convertible securities, Eurodollar and Yankee dollar instruments, preferred stocks and money market instruments) and high yield securities (commonly referred to as "junk bonds"). Fixed income securities in which the Fund invests include those rated between AAA and D by a nationally recognized statistical rating organization, or deemed of comparable quality by the Adviser. The Adviser may also temporarily invest uninvested cash in money market funds and similar collective investment vehicles. The Fund may also seek to increase its income by lending portfolio securities.

The Adviser determines the size of each long or short position by analyzing the tradeoff between the attractiveness of each position and its impact on the risk of the overall portfolio. The Fund seeks to construct a portfolio that has less volatility than the U.S. equity market by investing less than 100% of its assets in net long positions. Selection of individual securities to be held long or sold short will be based on a mix of quantitative techniques and fundamental security analysis. The Adviser selects stocks on the basis of three criteria: value, fundamental business strength and momentum. The Adviser examines various factors in determining the value characteristics of such issuers including price-to-book value ratios and price-to-earnings ratios. These value characteristics are examined in the context of the issuer's operating and financial fundamentals such as return on equity, earnings growth and cash flow. The Adviser selects securities for the Fund based on a continuous study of trends in industries and companies, earnings power and growth and other investment criteria.

Although the Fund seeks to follow a hedged strategy, there can be no assurance that the Fund's portfolio or investments will be insulated from market moves or effectively hedged against risk.

In general, the Fund's investments are broadly diversified over a number of industries and, as a matter of policy, the Fund is limited to investing less than 25% of its total assets in any one industry, except that the Fund may invest in exchange traded funds to the extent permitted by the Investment Company Act of 1940, as amended ("1940 Act"), and applicable SEC orders.

The Fund may invest up to 15% of its net assets in illiquid securities, including securities that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale.

The Adviser will sell a stock when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the Adviser constantly monitors and adjusts as appropriate.

The principal derivative instruments in which the Fund invests are futures and options on securities, securities indices or currencies, options on these futures, forward foreign currency contracts and interest rate or currency swaps. The Fund's investments in derivative instruments may be leveraged and result in losses exceeding the amounts invested.

While the Adviser intends to fully invest the Fund's assets at all times in accordance with the above-mentioned policies, the Fund reserves the right to hold up to 100% of its assets, as a temporary defensive measure, in cash and eligible U.S. dollar-denominated money market instruments and make investments inconsistent with its investment objective. The Adviser will determine when market conditions warrant temporary defensive measures.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Market Risk. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Although the long portfolio of the Fund will invest in stocks the Adviser believes to be undervalued, there is no guarantee that the price of these stocks will not move even lower.

• High Yield Debt Obligations Risk. The Fund may invest up to 20% of its net assets in high yield debt obligations (of any rating, including defaulted securities and unrated securities), including bonds and debentures, issued by corporations and business organizations. An issuer of debt obligations may default on its obligation to pay interest and repay principal. Also, changes in the financial strength of an issuer or changes in the credit rating of a security may affect its value. Such high yield debt obligations are referred to as "junk bonds" and are not considered to be investment grade.

• Foreign Securities Risk. International investing is subject to special risks, including currency exchange rate volatility, political, social or economic instability, and differences in taxation, auditing and financial practices.

• Currency Risk. Investment in foreign securities also involves currency risk associated with securities that trade or are denominated in currencies other than the U.S. dollar and which may be affected by fluctuations in currency exchange rates. An increase in the strength of the U.S. dollar relative to a foreign currency may cause the U.S. dollar value of an investment in that country to decline. Foreign currencies also are subject to risks caused by inflation, interest rates, budget deficits and low savings rates, political factors and government controls.

• Management Risk. The Fund is subject to the risk of poor stock selection. The Adviser may be incorrect in the stocks it buys and believes to be undervalued and in stocks it sells short and believes to be overvalued. Further, since the Adviser will manage both a long and a short portfolio, there is the risk that the Adviser may make more poor investment decisions than an adviser of a typical stock mutual fund with only a long portfolio.

• Short Sales Risk. Short sales of securities may result in gains if a security's price declines, but may result in losses if a security's price rises. In a rising market, short positions may be more likely to result in losses because securities sold short may be more likely to increase in value. Short selling also involves the risks of: increased leverage, and its accompanying potential for losses; the potential inability to reacquire a security in a timely manner, or at an acceptable price; the possibility of the lender terminating the loan at any time, forcing the Fund to close the transaction under unfavorable circumstances; the additional costs that may be incurred; and the potential loss of investment flexibility caused by the Fund's obligations to provide collateral to the lender and set aside assets to cover the open position. Short sales "against the box" may protect the Fund against the risk of losses in the value of a portfolio security because any decline in value of the security should be wholly or partially offset by a corresponding gain in the short position. Any potential gains in the security, however, would be wholly or partially offset by a corresponding loss in the short position. Short sales that are not "against the box" involve a form of investment leverage, and the amount of the Fund's loss on a short sale is potentially unlimited.

• Unseasoned Issuers Risk. Unseasoned issuers may not have an established financial history and may have limited product lines, markets or financial resources. Unseasoned issuers may depend on a few key personnel for management and may be susceptible to losses and risks of bankruptcy. As a result, such securities may be more volatile and difficult to sell.

• Small-Cap Companies Risk. The small capitalization equity securities in which the Fund may invest may be traded only in the over-the-counter market or on a regional securities exchange, may be listed only in the quotation service commonly known as the "pink sheets," and may not be traded every day or in the volume typical of trading on a national securities exchange. These securities may also be subject to wide fluctuations in market value. The trading market for any given small capitalization equity security may be sufficiently small as to make it difficult for the Fund to dispose of a substantial block of such securities. The sale by the Fund of portfolio securities to meet redemptions may require the Fund to sell its small capitalization securities at a discount from market prices or during periods when, in the Adviser's judgment, such sale is not desirable. Moreover, the lack of an efficient market for these securities may make them difficult to value.

• REITs Risk. REITs may be affected by economic forces and other factors related to the real estate industry. These risks include possible declines in the value of real estate, possible lack of availability of mortgage funds and unexpected vacancies of properties. REITs that invest in real estate mortgages are also subject to prepayment risk. Investing in REITs may involve risks similar to those associated with investing in small capitalization companies. REITs may have limited financial resources, may trade less frequently and in a limited volume and may be subject to more abrupt or erratic price movements than larger company securities. Historically, small capitalization stocks, such as REITs, have been more volatile in price than the larger capitalization stocks included in the S&P 500^®Index.

• Portfolio Turnover Risk. If the Fund frequently trades its portfolio securities, the Fund will incur higher brokerage commissions and transaction costs, which could lower the Fund's performance. In addition to lower performance, high portfolio turnover could result in taxable capital gains. A portfolio turnover rate of 100% is considered to be high. The annual portfolio turnover rate for the Fund is not expected to exceed 300%; however, it may be higher if the Adviser believes it will improve the Fund's performance.

• Illiquid Securities Risk. Investing in illiquid securities is subject to certain risks, such as limitations on resale and uncertainty in determining valuation. Limitations on resale may adversely affect the marketability of portfolio securities and the Fund might be unable to dispose of restricted or other illiquid securities promptly or at reasonable prices and might thereby experience difficulty satisfying redemptions within seven days.

• Derivatives Risk. The Fund's investments in derivative instruments, which include futures and options on securities, securities indices or currencies, options on these futures, forward foreign currency contracts and interest rate or currency swaps, may be leveraged and result in losses exceeding the amounts invested.

• Indexed Securities Risk. The Fund may invest in indexed securities whose value is linked to securities indices. Most such securities have values that rise and fall according to the change in one or more specified indices and may have characteristics similar to direct investments in the underlying securities. Depending on the index, such securities may have greater volatility than the market as a whole.

• Securities Lending Risk. The Fund may lend portfolio securities to institutions, such as certain broker-dealers. The Fund may experience a loss or delay in the recovery of its securities if the borrowing institution breaches its agreement with the Fund.

• Exchange-Traded Fund Risk. Exchange-traded funds ("ETFs") are a type of investment company bought and sold on a securities exchange. An ETF typically represents a fixed portfolio of securities designed to track a particular market index. The risks of owning an ETF generally reflect the risks of owning the underlying securities that they are designed to track, although lack of liquidity in an ETF could result in its being more volatile. Some ETFs are actively-managed by an investment adviser and/or sub-advisers. Actively-managed ETFs are subject to the risk of poor investment selection. The Fund may incur brokerage fees in connection with its purchase of ETF shares. The purchase of shares of ETFs may result in duplication of expenses, including advisory fees, in addition to the Fund's own expenses.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Bar Chart [Heading]

rr_BarChartHeading

Total Returns for the Calendar Years Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.08%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2011

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.89%)

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 Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns for the Fund's Institutional Class both before and after taxes for the past calendar year, past five calendar years and since inception to the average annual total returns of a broad-based securities market index for the same periods.

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

1.25%

Dividend expense on short sales

rbb_DividendExpenseOnShortSales

0.80%

^[18]

Other Expenses

rr_OtherExpensesOverAssets

0.13%

^[19]

One Year

rr_ExpenseExampleYear01

$ 2,271

Five Years

rr_ExpenseExampleYear05

11,999

Annual Return 2011

rr_AnnualReturn2011

3.40%

Annual Return 2013

rr_AnnualReturn2013

17.77%

Annual Return 2015

rr_AnnualReturn2015

1.52%

1 Year

rr_AverageAnnualReturnYear01

3.62%

Since Inception

rr_AverageAnnualReturnSinceInception

8.48%

1 Year

rr_AverageAnnualReturnYear01

3.62%

^[15]

Since Inception

rr_AverageAnnualReturnSinceInception

8.20%

^[15]

1 Year

rr_AverageAnnualReturnYear01

2.05%

Since Inception

rr_AverageAnnualReturnSinceInception

6.76%

1 Year

rr_AverageAnnualReturnYear01

11.96%

Since Inception

rr_AverageAnnualReturnSinceInception

13.78%

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION — WPG PARTNERS SMALL/MICRO CAP VALUE FUND

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks capital appreciation by investing primarily in common stocks, securities convertible into common stocks and in special situations.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2019

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. During the fiscal year ended August 31, 2017, the portfolio turnover rate for the Fund was 78% of the average value of its portfolio.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors may lose money.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below illustrate the long-term performance of the WPG Partners Small/Micro Cap Value Fund's Institutional Class. The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund. The bar chart assumes reinvestment of dividends and distributions. As with all such investments, past performance (before and after taxes) is not an indication of future results. Performance reflects fee waivers in effect. If fee waivers were not in place, the Fund's performance would be reduced. Updated performance information is available at www.boston-partners.com or 1-888-261-4073.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-261-4073

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all such investments, past performance (before and after taxes) is not an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best and Worst Quarterly Performance (for the periods reflected in the chart above):

Best Quarter:	28.51% (quarter ended June 30, 2009)
Worst Quarter:	-30.21% (quarter ended December 31, 2008)

The year-to-date total return for the nine months ended September 30, 2017 was 1.65%.

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2017

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

28.51%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
(for the Periods Ended December 31, 2016)

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.

Trading Symbol

dei_TradingSymbol

WPGTX

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

rr_DistributionAndService12b1FeesOverAssets

none

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.29%

Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.10%

Three Years

rr_ExpenseExampleYear03

3,902

Ten Years

rr_ExpenseExampleYear10

$ 15,398

Annual Return 2008

rr_AnnualReturn2008

(38.73%)

Annual Return 2010

rr_AnnualReturn2010

26.10%

Annual Return 2012

rr_AnnualReturn2012

22.88%

Annual Return 2014

rr_AnnualReturn2014

(3.62%)

Annual Return 2016

rr_AnnualReturn2016

19.63%

5 Years

rr_AverageAnnualReturnYear05

11.67%

1 Year

rr_AverageAnnualReturnYear01

19.51%

^[15]

10 Years

rr_AverageAnnualReturnYear10

3.30%

^[15]

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

8.96%

1 Year

rr_AverageAnnualReturnYear01

31.74%

10 Years

rr_AverageAnnualReturnYear10

6.26%

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

83.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors may lose money.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Bar Chart [Heading]

rr_BarChartHeading

Total Returns for the Calendar Years Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

13.77%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.22%)

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 Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns for the Fund's Institutional Class both before and after taxes for the past calendar year, past five calendar years and since inception to the average annual total returns of a broad-based securities market index for the same periods.

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

0.90%

Other Expenses

rr_OtherExpensesOverAssets

0.15%

^[13]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.09%)

^[23]

One Year

rr_ExpenseExampleYear01

$ 979

Five Years

rr_ExpenseExampleYear05

5,706

Annual Return 2012

rr_AnnualReturn2012

15.34%

Annual Return 2014

rr_AnnualReturn2014

4.34%

Annual Return 2016

rr_AnnualReturn2016

8.50%

5 Years

rr_AverageAnnualReturnYear05

11.79%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 30, 2011

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

11.15%

^[15]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 30, 2011

^[15]

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

9.29%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 30, 2011

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

11.04%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 30, 2011

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

109.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors may lose money.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Bar Chart [Heading]

rr_BarChartHeading

Total Returns for the Calendar Year Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.09%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2015

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(2.06%)

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 Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns for the Fund's Institutional Class both before and after taxes for the past calendar year and since inception to the average annual total returns of a broad-based securities market index for the same periods.

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

1.50%

Dividend expense on short sales

rbb_DividendExpenseOnShortSales

0.88%

^[24]

Other Expenses

rr_OtherExpensesOverAssets

0.21%

^[19]

One Year

rr_ExpenseExampleYear01

$ 2,671

Five Years

rr_ExpenseExampleYear05

14,001

Annual Return 2014

rr_AnnualReturn2014

1.40%

Annual Return 2016

rr_AnnualReturn2016

2.36%

Since Inception

rr_AverageAnnualReturnSinceInception

3.41%

1 Year

rr_AverageAnnualReturnYear01

2.30%

^[15]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2013

^[15]

Risk Return Abstract

rr_RiskReturnAbstract

Since Inception

rr_AverageAnnualReturnSinceInception

2.62%

1 Year

rr_AverageAnnualReturnYear01

8.15%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2013

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

184.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors may lose money.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart below shows you how the performance of the Fund's Institutional Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Bar Chart [Heading]

rr_BarChartHeading

Total Returns for the Calendar Year Ended December 31

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

21.34%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2016

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(6.25%)

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The table below compares the average annual total returns for the Fund's Institutional Class, including the Prior Account, both before and after taxes for the past calendar year and since inception to the average annual total returns of a broad-based securities market index for the same periods.

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

1.85%

Dividend expense on short sales

rbb_DividendExpenseOnShortSales

0.06%

^[26]

Other Expenses

rr_OtherExpensesOverAssets

1.07%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

3.04%

Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.18%

Three Years

rr_ExpenseExampleYear03

8,585

Ten Years

rr_ExpenseExampleYear10

$ 32,950

Annual Return 2016

rr_AnnualReturn2016

7.91%

Since Inception

rr_AverageAnnualReturnSinceInception

1.16%

^[29]

1 Year

rr_AverageAnnualReturnYear01

4.04%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2015

Risk Return Abstract

rr_RiskReturnAbstract

Since Inception

rr_AverageAnnualReturnSinceInception

0.01%

^[29]

1 Year

rr_AverageAnnualReturnYear01

11.60%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2015

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

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

rr_OtherExpensesNewFundBasedOnEstimates

"Other Expenses" are estimated for the current fiscal year.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $100,000 in the Fund for the time periods indicated and that you sell all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the operating expenses of the Fund remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund will pursue its objective through a value oriented, research-driven strategy of investing in equity securities and financial instruments with equity like characteristics designed to provide exposure to emerging markets. Securities are selected by the Adviser using its "three circles" approach which combines a quantitative screening with a fundamental bottom up selection process. This investment strategy is grounded in the following principles: (1) low valuation stocks outperform high valuation stocks; (2) companies with strong fundamentals, e.g. high and sustainable returns on invested capital, outperform companies with weak fundamentals; and (3) stocks with positive business momentum, e.g. rising earnings estimates, outperform stocks with negative business momentum. The Adviser examines various factors in determining the value characteristics of issuers, including price-to-book value ratios and price-to-earnings ratios. These value characteristics are examined in the context of the issuer's operating and financial fundamentals, such as return-on-equity and earnings growth and cash flow.

The Fund intends, under normal circumstances, to invest at least 80% of its net assets (including borrowings for investment purposes) in the securities of emerging market issuers, related derivative instruments and other investments that are tied economically to emerging market countries. The Adviser considers an emerging market country to include any country that is: 1) generally recognized to be an emerging market country by the international financial community, including the World Bank; 2) classified by the United Nations as a developing country; or 3) included in the MSCI Emerging Markets Index. Due to the unique relationship between China and its separately administered regions, the Adviser includes Hong Kong and Macau as emerging markets, independent of above definitions 1 through 3. The Adviser determines that an investment is tied economically to an emerging market if such investment satisfies one or more of the following conditions: 1) the issuer's primary trading market is in an emerging market; 2) the issuer is organized under the laws of, derives at least 50% of its revenue from, or has at least 50% of its assets in emerging markets; 3) the investment is included in an index representative of emerging markets; and 4) the investment is exposed to the economic risks and returns of emerging markets.

In managing the Fund's portfolio, the Adviser will seek to identify mispriced publicly traded equity securities of emerging market companies and purchase securities that the Adviser believes will outperform, emphasizing low valuation, positive business momentum and high quality.

The Fund's portfolio is rebalanced regularly to maintain the optimal risk/return trade-off. The Adviser assesses each stock's changing characteristics relative to its contribution to portfolio risk. The Adviser will sell a stock that the Adviser believes no longer offers an appropriate return-to-risk tradeoff. The Fund's investment adviser may engage in active trading, and will not consider portfolio turnover a limiting factor in making decisions for the Fund.

The equity securities in which the Fund will invest, which may include equity securities of non-U.S. issuers that are traded in the markets of the United States, include equity securities issued by large-, mid- and small- or micro-cap companies, as well as exchange-traded and over-the-counter common and preferred stocks, warrants, options, rights, convertible securities, sponsored and unsponsored depositary receipts and shares, trust certificates, limited partnership interests, shares of other investment companies (including exchanged-traded funds ("ETFs")), real estate investment trusts ("REITs") and equity participations. An equity participation is a type of loan that gives the lender a portion of equity ownership in a property, in addition to principal and interest payments. A convertible security is a bond, debenture, note, preferred stock or other security that may be converted into or exchanged for a prescribed amount of common stock of the same or a different issuer within a particular period of time at a specified price or formula. The Fund may invest in securities of companies operating for three years or less ("unseasoned issuers").

The Fund may invest up to 20% of its net assets in high yield debt obligations (commonly known as "junk bonds"), such as bonds and debentures, used by corporations and other business organizations (e.g. trusts or limited liability companies). Such high yield debt obligations are not considered to be investment grade. Junk bonds are rated BB or lower by Standard & Poor's Rating Group, or have a comparable rating by another nationally recognized statistical rating organization (or, if unrated are determined by the Adviser to be of comparable quality at the time of investment). The Fund may invest in securities of the lowest rating category, including securities in default. The Adviser may, but is not required to, sell a bond or note held by the Fund in the event that its credit rating is downgraded. The Fund will primarily invest in fixed income instruments, including high yield debt obligations, when the Fund believes that such instruments offer a better risk/reward profile than comparable equity opportunities.

To meet margin requirements, redemptions or pending investments, the Fund may also temporarily hold a portion of its assets in full faith and credit obligations of the United States government and in short-term notes, commercial paper or other money market instruments.

The Adviser will sell a stock when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the Adviser constantly monitors and adjusts as appropriate.

In general, the Fund's investments will be spread over a number of industries and, as a matter of policy, the Fund is limited to investing less than 25% of its total assets in any one industry, except that the Fund may invest in exchange traded funds to the extent permitted by the Investment Company Act of 1940, as amended ("1940 Act"), and applicable SEC orders.

The Fund may participate as a purchaser in initial public offerings of securities ("IPOs"). An IPO is a company's first offering of stock to the public.

The Fund may invest up to 15% of its net assets in illiquid securities, including securities that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale.

The Fund may also seek to increase its income by lending portfolio securities.

The Fund will invest in derivatives, including put and call options, futures, contracts for differences, forward contracts and swaps, in lieu of investing directly in a security, currency or instrument, for hedging and non-hedging purposes. Contracts for differences offer exposure to price changes in an underlying security without ownership of such security, typically by providing investors the ability to trade on margin. The Fund's investments in derivative instruments may be leveraged and result in losses exceeding the amounts invested.

While the Adviser intends to fully invest the Fund's assets at all times in accordance with the above-mentioned policies, the Fund reserves the right to hold up to 100% of its assets, as a temporary defensive measure, in cash and eligible U.S. dollar-denominated money market instruments and make investments inconsistent with its investment objective. The Adviser will determine when market conditions warrant temporary defensive measures.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Management Risk. The Fund is subject to the risk of poor stock selection. In other words, the individual stocks in the Fund makes may not perform as well as expected, and/or the Fund's portfolio management practices may not work to achieve their desired result.

• Market Risk. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Although the long portfolio of the Fund will invest in stocks the Adviser believes to be undervalued, there is no guarantee that the prices of these stocks will not move even lower.

• Foreign Securities Risk. International investing is subject to special risks, including, but not limited to, currency exchange rate volatility, political, social or economic instability, and differences in taxation, auditing and other financial practices.

• Emerging Markets Risk. Investment in emerging market securities involves greater risk than that associated with investment in securities of issuers in developed foreign countries. These risks include volatile currency exchange rates, periods of high inflation, increased risk of default, greater social, economic and political uncertainty and instability, less governmental supervision and regulation of securities markets, weaker auditing and financial reporting standards, lack of liquidity in the markets, and the significantly smaller market capitalizations of emerging market issuers.

• Currency Risk. Investment in foreign securities also involves currency risk associated with securities that trade or are denominated in currencies other than the U.S. dollar and which may be affected by fluctuations in currency exchange rates. An increase in the strength of the U.S. dollar relative to a foreign currency may cause the U.S. dollar value of an investment in that country to decline. Foreign currencies also are subject to risks caused by inflation, interest rates, budget deficits and low savings rates, political factors and government controls.

• Unseasoned Issuers Risk. Unseasoned issuers may not have an established financial history and may have limited product lines, markets or financial resources. Unseasoned issuers may depend on a few key personnel for management and may be susceptible to losses and risks of bankruptcy. As a result, such securities may be more volatile and difficult to sell.

• Micro-Cap Companies Risk. Micro-cap stocks may be very sensitive to changing economic conditions and market downturns because the issuers often have narrow markets for their products or services, fewer product lines, and more limited managerial and financial resources than larger issuers. The stocks of micro-cap companies may therefore be more volatile and the ability to sell them at a desirable time or price may be more limited.

• Small-Cap Companies Risk. The stocks of smaller companies may be subject to more abrupt, erratic market movements than stocks of larger, more established companies. Small companies may have limited product lines or financial resources, or may be dependent on a small or inexperienced management group, and their securities may trade less frequently and in lower volume than securities of larger companies, which could lead to higher transaction costs. Generally, the smaller the company size, the greater the risk.

• Mid-Cap Companies Risk. The stocks of mid-sized companies may be subject to more abrupt or erratic market movements than stocks of larger, more established companies.

• Large-Cap Companies Risk. The stocks of large capitalization companies as a group could fall out of favor with the market, causing the Fund to underperform investments that focus solely on small- or medium-capitalization stocks.

• REITs Risk. REITs may be affected by economic forces and other factors related to the real estate industry. These risks include possible declines in the value of real estate, possible lack of availability of mortgage funds and unexpected vacancies of properties. REITs that invest in real estate mortgages are also subject to prepayment risk. Investing in REITs may involve risks similar to those associated with investing in small capitalization companies. REITs may have limited financial resources, may trade less frequently and in a limited volume and may be subject to more abrupt or erratic price movements than larger company securities. Historically, small capitalization stocks, such as REITs, have been more volatile in price than the larger capitalization stocks included in the S&P 500^®Index. The Fund will indirectly bear its proportionate share of any expenses, including management fees, paid by an externally managed REIT in which it invests.

• Portfolio Turnover Risk. The Fund may frequently trade its portfolio securities, resulting in higher brokerage commissions and transaction costs, which could lower the Fund's performance. In addition to lower performance, high portfolio turnover could result in taxable capital gains. A portfolio turnover rate of 100% is considered to be high. The annual portfolio turnover rate for the Fund is not expected to exceed 400%; however, it may be higher if the Adviser believes it will improve the Fund's performance.

• Segregated Account Risk. The Fund's transactions in derivative instruments may require the Fund to establish a segregated account consisting of cash or liquid securities in an amount sufficient to cover the transactions. A security held in a segregated account cannot be sold while the position it is covering is outstanding, unless it is replaced with a similar security. As a result, there is a possibility that segregation of a large percentage of the Fund's assets could impede portfolio management or the Fund's ability to meet redemption requests or other current obligations.

• Illiquid Securities Risk. Investing in illiquid securities is subject to certain risks, such as limitations on resale and uncertainty in determining valuation. Limitations on resale may adversely affect the marketability of portfolio securities and the Fund might be unable to dispose of restricted or other illiquid securities promptly or at reasonable prices and might thereby experience difficulty satisfying redemptions within seven days. The Fund might, in order to dispose of restricted securities, have to register securities resulting in additional expense and delay. Adverse market conditions could impede such a public offering of such securities.

• Convertible Securities Risk. Securities that can be converted into common stock, such as certain securities and preferred stock, are subject to the usual risks associated with fixed income investments, such as interest rate risk and credit risk. In addition, because they react to changes in the value of the equity securities into which they will convert, convertible securities are also subject to the risks associated with equity securities.

• Options Risk. An option is a type of derivative instrument that gives the holder the right (but not the obligation) to buy (a "call") or sell (a "put") an asset in the near future at an agreed upon price prior to the expiration date of the option. The Fund may "cover" a call option by owning the security underlying the option or through other means. The value of options can be highly volatile, and their use can result in loss if the Adviser is incorrect in its expectation of price fluctuations. Losses incurred by the Fund in writing options can be potentially unlimited.

• Derivatives Risk. The Fund's investments in derivative instruments, which include futures and options on securities, securities indices or currencies, options on these futures, contracts for differences, forward foreign currency contracts and interest rate or currency swaps, may be leveraged and result in losses exceeding the amounts invested.

• IPO Risk. IPO risk is the risk that the market value of IPO shares will fluctuate considerably due to certain factors, such as the absence of a prior public market, unseasoned trading, the small number of shares available for trading and limited information about the issuer. The purchase of IPO shares may involve high transaction costs. IPO shares are subject to market risk and liquidity risk. When the Fund's asset base is small, a significant portion of the Fund's performance could be attributable to investments in IPOs, because such investments would have a magnified impact on the Fund. As the Fund's assets grow, the effect of the Fund's investments in IPOs on the Fund's performance probably will decline, which could reduce the Fund's performance. Because of the price volatility of IPO shares, the Fund may choose to hold IPO shares for a very short period of time. This may increase the turnover of the Fund's portfolio and may lead to increased expenses to the Fund, such as commissions and transaction costs. In addition, the Adviser cannot guarantee continued access to IPOs.

• Exchange Traded Fund Risk. Exchange traded funds ("ETFs") are a type of investment company bought and sold on a securities exchange. An ETF typically represents a fixed portfolio of securities designed to track a particular market index. The risks of owning an ETF generally reflect the risks of owning the underlying securities that they are designed to track, although lack of liquidity in an ETF could result in its being more volatile. Some ETFs are actively-managed by an investment adviser and/or sub-advisers. Actively-managed ETFs are subject to the risk of poor investment selection. The Fund may incur brokerage fees in connection with its purchase of ETF shares. The purchase of shares of ETFs may result in the duplication of expenses, including advisory fees, in addition to the Fund's own expenses.

• Securities Lending Risk. The Fund may lend portfolio securities to institutions, such as certain broker-dealers. The Fund may experience a loss or delay in the recovery of its securities if the borrowing institution breaches its agreement with the Fund.

• High Yield Debt Obligations Risk. The Fund may invest up to 20% of its net assets in Junk Bonds, such as bonds and debentures, issued by corporations and other business organizations. An issuer of debt obligations may default on its obligation to pay interest and repay principal. Also, changes in the financial strength of an issuer or changes in the credit rating of a security may affect its value. Such Junk Bonds are not considered to be investment grade.

• Equity Securities Risk. The Fund may invest in, or have exposure to, equity securities. Equity securities tend to be more volatile than other investment choices, such as debt and money market instruments. The value of your investment may decrease in response to overall stock market movements or the value of individual securities.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

Performance information for the Fund is not included because the Fund did not have one full calendar year of performance prior to the date of this Prospectus.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.boston-partners.com

Risk Return Abstract

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

0.85%

Other Expenses

rr_OtherExpensesOverAssets

0.49%

^[30]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.24%)

^[31]

One Year

rr_ExpenseExampleYear01

$ 1,121

Risk/Return [Heading]

rr_RiskReturnHeading

SUMMARY SECTION — BOSTON PARTNERS SMALL CAP VALUE FUND II

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks to provide long-term growth of capital primarily through investment in equity securities.

Expense [Heading]

rr_ExpenseHeading

Expenses and Fees

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

24.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Strategy [Heading]

rr_StrategyHeading

Summary of Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Summary of Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

Investors may lose money.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below illustrate the long-term performance of the Boston Partners Small Cap Value Fund II's Investor Class. The bar chart below shows you how the performance of the Fund's Investor Class has varied year by year and provides some indication of the risks of investing in the Fund. The bar chart assumes reinvestment of dividends and distributions. As with all such investments, past performance (before and after taxes) is not an indication of future results. Performance reflects fee waivers in effect. If fee waivers were not in place, the Fund's performance would be reduced. Updated performance information is available at www.boston-partners.com or 1-888-261-4073.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-888-261-4073

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all such investments, past performance (before and after taxes) is not an indication of future results.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best and Worst Quarterly Performance (for the periods reflected in the chart above):

Best Quarter:	29.32% (quarter ended June 30, 2009)
Worst Quarter:	-26.42% (quarter ended December 31, 2008)

The year-to-date total return for the nine months ended September 30, 2017 was 6.25%.

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2017

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

29.32%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
for the Periods Ended December 31, 2016

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.

Trading Symbol

dei_TradingSymbol

BPSCX

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.44%

Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.36%

Three Years

rr_ExpenseExampleYear03

448

Ten Years

rr_ExpenseExampleYear10

$ 1,717

Annual Return 2008

rr_AnnualReturn2008

(34.82%)

Annual Return 2010

rr_AnnualReturn2010

18.24%

Annual Return 2012

rr_AnnualReturn2012

22.54%

Annual Return 2014

rr_AnnualReturn2014

3.90%

Annual Return 2016

rr_AnnualReturn2016

25.68%

5 Years

rr_AverageAnnualReturnYear05

15.47%

1 Year

rr_AverageAnnualReturnYear01

25.07%

^[15]

10 Years

rr_AverageAnnualReturnYear10

6.75%

^[15]

Risk Return Abstract

rr_RiskReturnAbstract

5 Years

rr_AverageAnnualReturnYear05

12.44%

1 Year

rr_AverageAnnualReturnYear01

31.74%

10 Years

rr_AverageAnnualReturnYear10

6.26%

Risk Return Abstract

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

Current income is a secondary objective.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2019

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. During the fiscal year ended August 31, 2017, the portfolio turnover rate for the Fund was 27% of the average value of its portfolio.

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

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

"Other Expenses" includes acquired fund fees and expenses, which are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total annual Fund operating expenses and Total annual Fund operating expenses after fee waiver and/or expense reimbursement shown in the above table will differ from the "Financial Highlights" section of the prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as acquired fund fees and expenses.

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the operating expenses of the Fund remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund pursues its objective by investing, under normal circumstances, at least 80% of its net assets (including borrowings for investment purposes) in a diversified portfolio consisting primarily of equity securities, such as common stocks of issuers across the capitalization spectrum and identified by the Adviser as having value characteristics.

The Adviser will sell a stock when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the Adviser constantly monitors and adjusts as appropriate.

The Adviser examines various factors in determining the value characteristics of such issuers including price to book value ratios and price to earnings ratios. These value characteristics are examined in the context of the issuer's operating and financial fundamentals, such as return on equity and earnings growth and cash flow. The Adviser selects securities for the Fund based on a continuous study of trends in industries and companies, earnings power and growth and other investment criteria.

The Fund may also invest up to 20% of its total assets in non U.S. dollar denominated securities.

The Fund may invest up to 15% of its net assets in illiquid securities, including securities that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale.

The Fund may participate as a purchaser in initial public offerings of securities ("IPO"). An IPO is a company's first offering of stock to the public.

The Fund may invest up to 10% of its net assets in securities that can be converted into common stock, such as certain debt securities and preferred stock.

The Fund may hedge overall portfolio exposure up to 40% of its net assets through the purchase and sale of index and individual put and call options.

In general, the Fund's investments are broadly diversified over a number of industries and, as a matter of policy, the Fund is limited to investing less than 25% of its total assets in any one industry.

While the Adviser intends to fully invest the Fund's assets at all times in accordance with the above-mentioned policies, the Fund reserves the right to hold up to 100% of its assets, as a temporary defensive measure, in cash and eligible U.S. dollar-denominated money market instruments and make investments inconsistent with its investment objective. The Adviser will determine when market conditions warrant temporary defensive measures.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• Management Risk. The Fund is subject to the risk of poor stock selection. In other words, the individual stocks in the Fund may not perform as well as expected, and/or the Fund's portfolio management practices do not work to achieve their desired result.

• Market Risk. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Although the Fund will invest in stocks the Adviser believes to be undervalued, there is no guarantee that the prices of these stocks will not move even lower.

• Foreign Securities Risk. International investing is subject to special risks, including, but not limited to, currency exchange rate volatility, political, social or economic instability, and differences in taxation, auditing and other financial practices.

• Small/Mid-Cap Companies Risk. Investing in securities of companies with micro, small or mid-sized capitalizations tends to be riskier than investing in securities of companies with large capitalizations. Securities of companies with micro, small and mid-sized capitalizations tend to be more volatile than those of large cap companies and, on occasion, may fluctuate in the opposite direction of large cap company securities or the broader stock market averages.

The small capitalization equity securities in which the Fund invests may be traded only in the over-the- counter market or on a regional securities exchange, may be listed only in the quotation service commonly known as the "pink sheets," and may not be traded every day or in the volume typical of trading on a national securities exchange. These securities may also be subject to wide fluctuations in market value. The trading market for any given small capitalization equity security may be sufficiently small as to make it difficult for the Fund to dispose of a substantial block of such securities. The sale by the Fund of portfolio securities to meet redemptions may require the Fund to sell its small capitalization securities at a discount from market prices or during periods when, in the Adviser's judgment, such sale is not desirable. Moreover, the lack of an efficient market for these securities may make them difficult to value.

• Convertible Securities Risk. Securities that can be converted into common stock, such as certain securities and preferred stock, are subject to the usual risks associated with fixed income investments, such as interest rate risk and credit risk. In addition, because they react to changes in the value of the equity securities into which they will convert, convertible securities are also subject to the risks associated with equity securities.

• Options Risk. An option is a type of derivative instrument that gives the holder the right (but not the obligation) to buy (a "call") or sell (a "put") an asset in the near future at an agreed upon price prior to the expiration date of the option. The Fund may "cover" a call option by owning the security underlying the option or through other means. The value of options can be highly volatile, and their use can result in loss if the Adviser is incorrect in its expectation of price fluctuations.

• Illiquid Securities Risk. Investing in illiquid securities is subject to certain risks, such as limitations on resale and uncertainty in determining valuation. Limitations on resale may adversely affect the marketability of portfolio securities and the Fund might be unable to dispose of restricted or other illiquid securities promptly or at reasonable prices and might thereby experience difficulty satisfying redemptions within seven days. The Fund might, in order to dispose of restricted securities, have to register securities resulting in additional expense and delay. Adverse market conditions could impede such a public offering of such securities.

• IPO Risk. IPO risk is the risk that the market value of IPO shares will fluctuate considerably due to certain factors, such as the absence of a prior public market, unseasoned trading, the small number of shares available for trading and limited information about the issuer. The purchase of IPO shares may involve high transaction costs. IPO shares are subject to market risk and liquidity risk. When the Fund's asset base is small, a significant portion of the Fund's performance could be attributable to investments in IPOs, because such investments would have a magnified impact on the Fund. As the Fund's assets grow, the effect of the Fund's investments in IPOs on the Fund's performance probably will decline, which could reduce the Fund's performance. Because of the price volatility of IPO shares, the Fund may choose to hold IPO shares for a very short period of time. This may increase the turnover of the Fund's portfolio and may lead to increased expenses to the Fund, such as commissions and transaction costs. In addition, the Adviser cannot guarantee continued access to IPOs.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Information Illustrates Variability of Returns [Text]

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The bar chart below shows you how the performance of the Fund's Investor Class has varied year by year and provides some indication of the risks of investing in the Fund.

Performance Availability Website Address [Text]

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www.boston-partners.com

Bar Chart [Heading]

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Total Returns for the Calendar Years Ended December 31

Year to Date Return, Label

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year-to-date total return

Bar Chart, Year to Date Return

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12.19%

Highest Quarterly Return, Date

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Jun. 30, 2009

Lowest Quarterly Return, Label

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Worst Quarter:

Lowest Quarterly Return

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(17.62%)

Performance Table Uses Highest Federal Rate

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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 Narrative

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The table below compares the average annual total returns for the Fund's Investor Class both before and after taxes for the past calendar year, past five calendar years and past ten calendar years to the average annual total returns of a broad-based securities market index for the same periods.

Risk Return Abstract

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Management Fees

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0.70%

^[16]

Other Expenses

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0.19%

^[13]

Fee Waivers and/or Expense Reimbursements

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(0.08%)

^[33]

One Year

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$ 108

Five Years

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620

Annual Return 2007

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1.23%

Annual Return 2009

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30.77%

Annual Return 2011

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(1.62%)

Annual Return 2013

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38.92%

Annual Return 2015

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0.69%

1 Year

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14.52%

10 Years

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8.27%

Risk Return Abstract

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5 Years

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14.56%

^[15]

1 Year

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9.03%

10 Years

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6.55%

Risk Return Abstract

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5 Years

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14.81%

Risk/Return [Heading]

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SUMMARY SECTION — BOSTON PARTNERS LONG/SHORT EQUITY FUND

Objective, Primary [Text Block]

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The Fund seeks long-term capital appreciation while reducing exposure to general equity market risk. The Fund seeks a total return greater than that of the S&P 500^®Index over a full market cycle.

Expense Narrative [Text Block]

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

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2019

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in Total annual Fund operating expenses or in the Example, affect the Fund's performance. During the fiscal year ended August 31, 2017, the portfolio turnover rate for the Fund was 63% of the average value of its portfolio.

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

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"Other Expenses" includes acquired fund fees and expenses, which are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total annual Fund operating expenses shown in the above table will differ from the "Financial Highlights" section of the prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as acquired fund fees and expenses.

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the operating expenses of the Fund remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

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The Fund invests in long positions in stocks identified by the Adviser as undervalued and takes short positions in stocks that the Adviser has identified as overvalued. The cash proceeds from short sales will be invested in short-term cash instruments to produce a return on such proceeds just below the federal funds rate. Short sales are considered speculative transactions and a form of leverage. The Fund invests, both long and short, in securities principally traded in the United States markets. The Fund may invest in securities of companies operating for three years or less ("unseasoned issuers"). The Adviser will determine the size of each long or short position by analyzing the tradeoff between the attractiveness of each position and its impact on the risk of the overall portfolio. The Fund seeks to construct a portfolio that has less volatility than the United States equity market generally. The Adviser examines various factors in determining the value characteristics of such issuers including price-to-book value ratios and price-to-earnings ratios. These value characteristics are examined in the context of the issuer's operating and financial fundamentals such as return on equity, earnings growth and cash flow. The Adviser selects securities for the Fund based on a continuous study of trends in industries and companies, earnings power and growth and other investment criteria.

The Adviser will sell a stock when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the Adviser constantly monitors and adjusts as appropriate.

The Fund intends, under normal circumstances, to invest at least 80% of its net assets (including borrowings for investment purposes) in equity securities.

Under normal circumstances, the Adviser expects that the Fund's long positions will not exceed approximately 125% of the Fund's net assets.