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Pzena Mid Cap Value Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Pzena Mid Cap Value Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Pzena Mid Cap Value Fund (the "Mid Cap Fund") seeks to achieve long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Mid Cap Fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
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)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Jun. 27, 2019
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover.
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Mid Cap Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance.  During the most recent fiscal year, the Fund's portfolio turnover rate was 16% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 16.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees Total Annual Fund Operating Expenses do not correlate to the Ratio of Expenses to Average Net Assets Before Expense Reimbursement provided in the Financial Highlights section of the statutory prospectus, which reflects the actual operating expenses of the Mid Cap Fund and does not include 0.01% that is attributed to acquired fund fees and expenses ("AFFE").
Expense Example [Heading] rr_ExpenseExampleHeading Example.
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Mid Cap Fund with the cost of investing in other mutual funds.  The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same (taking into account the Expense Caps only in the first year).
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal market conditions, the Mid Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of "mid-cap" companies.  The Fund defines a "mid-cap" company as an issuer whose market capitalization at the time of initial purchase, is in the range of those found in the Russell Midcap® Index ("mid cap companies").  As of May 31, 2018, the market capitalization of companies in the Russell Midcap® Index ranged from $324 million to $40,500 million. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its total assets in equity securities of mid-cap companies.

In managing the Fund's assets, the Adviser will follow a classic value strategy.  The Fund's portfolio will generally consist of 30 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research.  The Fund seeks to invest in mid cap company stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects.  Though the Fund primarily invests in U.S. listed companies, it may also invest up to 20% of its net assets in shares of foreign companies, through American Depositary Receipts ("ADRs") or dollar-denominated foreign securities.  The Fund's investments in foreign securities may include investments in emerging markets securities.  The Fund may also invest in real estate investment trusts ("REITs").  From time to time, the Fund may be invested in securities of companies in the same economic sector.  The Fund currently invests a significant portion of its assets in the financial sector.

In evaluating an investment for purchase by the Mid Cap Fund, the Adviser focuses on the company's underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, and the experience and competence of management, among other factors.  The Adviser's sell discipline is guided by the same process with which the Adviser originally screens the investment universe.  The Adviser typically sells a security when it reaches fair value, there are more attractive opportunities or there is a change in company fundamentals.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Losing all or a portion of your investment is a risk of investing in the Mid Cap Fund.  The following additional risks could affect the value of your investment:

·
Market and Regulatory Risk. Events in the financial markets and economy may cause volatility and uncertainty and adversely impact the Fund's performance. Market events may affect a single issuer, industry, sector, or the market as a whole. Traditionally liquid investments may experience periods of diminished liquidity. Governmental and regulatory actions, including tax law changes, may also impair portfolio management and have unexpected or adverse consequences on particular markets, strategies, or investments.
 

·
Management Risk.  The Mid Cap Fund is an actively managed investment portfolio and the Fund relies on the Adviser's ability to pursue the Fund's goal.  The Adviser will apply its investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that its decisions will produce the desired results.
 

·
Equity Securities Risk.  The price of equity securities may rise or fall because of economic or political changes or changes in a company's financial condition, sometimes rapidly or unpredictably. These price movements may result from factors affecting individual companies, sectors or industries selected for the Fund's portfolio or the securities market as a whole, such as changes in economic or political conditions.

·
Foreign Securities Risk.  Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies.

·
Emerging Markets Risk.  In addition to the risks of foreign securities in general, investments in emerging markets may be riskier than investments in or exposure to investments in the U.S. and other developed markets for many reasons, including smaller market capitalizations, greater price volatility, less liquidity, a higher degree of political and economic instability (which can freeze, restrict or suspend transactions in those investments, including cash), the impact of economic sanctions, less governmental regulation and supervision of the financial industry and markets, and less stringent financial reporting and accounting standards and controls.
 

·
Depositary Receipt Risk. The Mid Cap Fund's equity investments may take the form of sponsored or unsponsored depositary receipts.  Holders of unsponsored depositary receipts generally bear all the costs of such facilities and the depositary of an unsponsored facility frequently is under no obligation to distribute shareholder communications received from the issuer of the deposited security or to pass through voting rights to the holders of such receipts of the deposited securities.
 

·
Currency Risk.  Changes in foreign currency exchange rates will affect the value of what the Fund owns and the Fund's share price.  Generally, when the U.S. dollar rises in value against a foreign currency, an investment in that country loses value because that currency is worth fewer U.S. dollars.  Devaluation of a currency by a country's government or banking authority also will have a significant impact on the value of any investments denominated in that currency.  Currency markets generally are not as regulated as securities markets and the risk may be higher in emerging markets.
 

·
Sector Emphasis Risk.  The securities of companies in the same or related businesses, if comprising a significant portion of the Mid Cap Fund's portfolio, could react in some circumstances negatively to market conditions, interest rates and economic, regulatory or financial developments and adversely affect the value of the portfolio to a greater extent than if such business comprised a lesser portion of the Fund's portfolio.
 

o
Financial Sector Risk.  Financial services companies are subject to extensive governmental regulation which may limit both the amounts and types of loans and other financial commitments they can make, the interest rates and fees they can charge, the scope of their activities, the prices they can charge and the amount of capital they must maintain. Profitability is largely dependent on the availability and cost of capital funds, and can fluctuate significantly when interest rates change or due to increased competition. Certain events in the financial sector may cause an unusually high degree of volatility in the financial markets, both domestic and foreign, and cause certain financial services companies to incur large losses. Securities of financial services companies may experience a dramatic decline in value when such companies experience substantial declines in the valuations of their assets, take action to raise capital (such as the issuance of debt or equity securities), or cease operations. Credit losses resulting from financial difficulties of borrowers and financial losses associated with investment activities can negatively impact the sector.

·
Liquidity Risk.  Low or lack of trading volume may make it difficult to sell securities held by the Mid Cap Fund at quoted market prices.
 

·
Mid Cap Company Risk.  A mid cap company may be more vulnerable to adverse business or economic events than stocks of larger companies.  These stocks present greater risks than securities of larger, more diversified companies.
 

·
Value Style Investing Risk.  The Fund emphasizes a "value" style of investing, which targets undervalued companies with characteristics for improved valuations. This style of investing is subject to the risk that the valuations never improve or that the returns on "value" securities may not move in tandem with the returns on other styles of investing or the stock market in general.
 

·
Real Estate Investment Trust (REIT) Risk.  Investments in REITs are subject to the same risks as direct investments in real estate and mortgages which include, but are not limited to, sensitivity to changes in real estate values and property taxes, interest rate risk, tax and regulatory risk, fluctuations in rent schedules and operating expenses, adverse changes in local, regional or general economic conditions, deterioration of the real estate market and the financial circumstances of tenants and sellers, unfavorable changes in zoning, building, environmental and other laws, the need for unanticipated renovations, unexpected increases in the cost of energy and environmental factors. In addition, the underlying mortgage loans may be subject to the risks of default or of prepayments that occur earlier or later than expected, and such loans may also include so-called "sub-prime" mortgages. The value of REITs will also rise and fall in response to the management skill and creditworthiness of the issuer. In particular, the value of these securities may decline when interest rates rise and will also be affected by the real estate market and by the management of the underlying properties. REITs may be more volatile and/or more illiquid than other types of equity securities. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests in addition to the expenses of the Fund.
Risk Lose Money [Text] rr_RiskLoseMoney Losing all or a portion of your investment is a risk of investing in the Mid Cap Fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following information provides some indication of the risks of investing in the Mid Cap Fund.  The bar chart shows the annual returns for the Fund's Institutional Class shares from year to year.  The table shows how the Fund's average annual returns for the 1-year and since inception periods compare with those of a broad measure of market performance.  The Fund's past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund's website at www.pzenafunds.com or by calling the Fund toll-free at 1-844-796-1996 (844-PZN-1996).
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following information provides some indication of the risks of investing in the Mid Cap Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-844-796-1996
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.pzenafunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar Year Total Returns as of December 31 – Institutional Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
The Fund's calendar year-to-date return as of March 31, 2018 was -1.53%.  During the period of time shown in the bar chart, the highest return for a calendar quarter was 12.51% (quarter ended December 31, 2016) and the lowest return for a calendar quarter was -9.50% (quarter ended September 30, 2015).
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2018
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (1.53%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 12.51%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (9.50%)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns were calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns are not relevant to investors who hold shares of the Mid Cap Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs").
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
The after-tax returns were calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.  Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns are not relevant to investors who hold shares of the Mid Cap Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs").
Caption rr_AverageAnnualReturnCaption Average Annual Total Returns (For the period ended December 31, 2017)
Pzena Mid Cap Value Fund | Russell Midcap® Value Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Russell Midcap® Value Index (reflects no deduction for fees, expenses or taxes)
Average Annual Return, 1 Year rr_AverageAnnualReturnYear01 13.34%
Average Annual Return, Since Inception rr_AverageAnnualReturnSinceInception 9.64%
Average Annual Return, Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2014
Pzena Mid Cap Value Fund | Investor Class  
Risk/Return: rr_RiskReturnAbstract  
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (1.00%)
Management Fees rr_ManagementFeesOverAssets 0.80%
Distribution and Service (Rule 12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Shareholder Servicing Plan Fee rr_Component1OtherExpensesOverAssets 0.10%
Other Expenses (includes Shareholder Servicing Plan Fee) rr_OtherExpensesOverAssets 2.66%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.71% [1]
Less: Fee Waiver and Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.45%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement rr_NetExpensesOverAssets 1.26%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 128
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 908
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,708
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,800
Label rr_AverageAnnualReturnLabel Investor Class Return Before Taxes
Average Annual Return, 1 Year rr_AverageAnnualReturnYear01 14.36%
Average Annual Return, Since Inception rr_AverageAnnualReturnSinceInception 10.18%
Average Annual Return, Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2014
Pzena Mid Cap Value Fund | Institutional Class  
Risk/Return: rr_RiskReturnAbstract  
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (1.00%)
Management Fees rr_ManagementFeesOverAssets 0.80%
Distribution and Service (Rule 12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Servicing Plan Fee rr_Component1OtherExpensesOverAssets none
Other Expenses (includes Shareholder Servicing Plan Fee) rr_OtherExpensesOverAssets 2.04%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.84% [1]
Less: Fee Waiver and Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.93%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement rr_NetExpensesOverAssets 0.91%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 93
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 697
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,327
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,027
Annual Return 2015 rr_AnnualReturn2015 (3.62%)
Annual Return 2016 rr_AnnualReturn2016 25.37%
Annual Return 2017 rr_AnnualReturn2017 14.56%
Label rr_AverageAnnualReturnLabel Institutional Class Return Before Taxes
Average Annual Return, 1 Year rr_AverageAnnualReturnYear01 14.56%
Average Annual Return, Since Inception rr_AverageAnnualReturnSinceInception 10.48%
Average Annual Return, Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2014
Pzena Mid Cap Value Fund | Institutional Class | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Institutional Class Return After Taxes on Distributions
Average Annual Return, 1 Year rr_AverageAnnualReturnYear01 13.79%
Average Annual Return, Since Inception rr_AverageAnnualReturnSinceInception 9.61%
Pzena Mid Cap Value Fund | Institutional Class | After Taxes on Distributions and Sale of Fund Shares  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Institutional Class Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Return, 1 Year rr_AverageAnnualReturnYear01 8.83%
Average Annual Return, Since Inception rr_AverageAnnualReturnSinceInception 7.97%
[1] Total Annual Fund Operating Expenses do not correlate to the Ratio of Expenses to Average Net Assets Before Expense Reimbursement provided in the Financial Highlights section of the statutory prospectus, which reflects the actual operating expenses of the Mid Cap Fund and does not include 0.01% that is attributed to acquired fund fees and expenses ("AFFE").
[2] Pzena Investment Management, LLC (the "Adviser") has contractually agreed to waive a portion or all of its management fees and pay Mid Cap Fund expenses to ensure that Total Annual Fund Operating Expenses (excluding AFFE, interest expense, taxes, dividends on securities sold short and extraordinary expenses) do not exceed 1.25% of average daily net assets of the Investor Class shares and 0.90% of average daily net assets of the Institutional Class shares (the "Expense Caps"). The Expense Caps will remain in effect through at least June 27, 2019, and may be terminated only by the Trust's Board of Trustees (the "Board"). The Adviser may request recoupment of previously waived fees and paid expenses from the Fund for three years from the date they were waived and paid, subject to the Expense Caps.