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Scharf Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Scharf Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Scharf Fund (the “Scharf Fund” or the “Fund”) seeks 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 Scharf 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 Jan. 27, 2018
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Scharf 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 30.58% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 30.58%
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 Fee Waivers in the Financial Highlights section of the statutory prospectus, which reflects the operating expenses of the Scharf Fund and does not include expenses 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 Scharf 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 of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal market conditions, the Scharf Fund primarily invests in equity securities that the Adviser believes have significantly more appreciation potential than downside risk over the long term.  Equity securities in which the Fund may invest include, but are not limited to, common and preferred stock of companies of all market capitalizations, rights and warrants.  The Fund may invest up to 50% of its total assets in securities of foreign issuers, including up to 25% of its total assets in issuers in emerging markets.  Such foreign securities may be listed on foreign exchanges as well as in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”).  The Fund may also invest up to 30% of its total assets in non-money market investment companies, including exchange-traded funds (“ETFs”).  The Fund may also invest in Rule 144A securities.

In general, the Adviser utilizes five key elements in its equity investment philosophy: low valuation, discount to fair value, investment flexibility, focus and long-term perspective.  Through a proprietary screening process, the Adviser seeks to identify investments with low valuations combined with growing earnings, cash flow and/or book value which the Adviser describes as “growth stocks at value prices.”  The Scharf Fund may also invest in “special situations,” which may occur when the securities of a company are affected by circumstances, including, but not limited to, hidden assets (i.e., assets that may be undervalued on a company’s balance sheet or otherwise difficult to value and therefore not properly reflected in the company’s share price), spinoffs, liquidations, reorganizations, recapitalizations, mergers, management changes and technological changes.

In addition, the Scharf Fund may invest up to 30% of its total assets in fixed-income securities.  Fixed-income securities in which the  Fund may invest include, but are not limited to, those of domestic and foreign governments, government agencies, inflation-protected securities, asset-backed securities, exchange-traded notes (“ETNs”), money market instruments, convertible securities, bank debt, limited partnerships, municipalities and companies across a wide range of industries, market capitalizations and maturities and may include those that are rated below investment grade (i.e., “junk bonds”).

The Scharf Fund may invest up to 100% of its net assets in cash, cash equivalents, and high-quality, short-term debt securities, money market mutual funds and money market instruments due to a lack of suitable investment opportunities or for temporary defensive purposes.

When selling securities, the Adviser considers the same factors it uses in evaluating a security for purchase and generally sells securities that it believes no longer have sufficient upside potential. 
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Losing all or a portion of your investment is a risk of investing in the Scharf Fund.  The following risks could affect the value of your investment:

·
General Market Risk.  Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions.

·
Market Risk.  The prices of the securities in which the Scharf Fund invests may decline for a number of reasons.  These reasons may include changing economic circumstances and/or perceptions about the creditworthiness of individual issuers.

·
Management Risk.  The Scharf Fund is an actively managed portfolio.  The Adviser’s management practices and investment strategies might not produce the desired results.  The Adviser may be incorrect in its assessment of a stock’s appreciation potential.

·
Foreign and Emerging Market Securities Risk.  The risks of investing in the securities of foreign issuers can include fluctuations in foreign currencies, foreign currency exchange controls, political and economic instability, differences in securities regulation and trading, and foreign taxation issues.  These risks are greater in emerging markets.

·
Depositary Receipt Risk.  The Scharf 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.

·
Foreign Currency Risk.  Currency movements may negatively impact value even when there is no change in value of the security in the issuer’s home country.  Currency management strategies may substantially change the Scharf Fund’s exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as the Adviser expects.

·
Large-Sized Company Risk.  Larger, more established companies may be unable to respond quickly to new competitive challenges like changes in consumer tastes or innovative smaller competitors. In addition, large-cap companies are sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion.

·
Small- and Medium-Sized Company Risk.  Small- and medium-sized companies often have less predictable earnings, more limited product lines, markets, distribution channels or financial resources and the management of such companies may be dependent upon one or few key people.  The market movements of equity securities of small- and medium-sized companies may be more abrupt and volatile than the market movements of equity securities of larger, more established companies or the stock market in general and small-sized companies in particular, are generally less liquid than the equity securities of larger companies.

·
Investment Style Risk.  The Adviser follows an investing style that favors relatively low valuations.  At times when this style is out of favor, the Scharf Fund may underperform funds that use different investing styles.

·
Investment Company Risk.  When the Scharf Fund invests in an ETF or mutual fund, it will bear additional expenses based on its pro rata share of the ETF’s or mutual fund’s operating expenses, including the potential duplication of management fees.  The risk of owning an ETF or mutual fund generally reflects the risks of owning the underlying securities the ETF or mutual fund holds.  The Fund also will incur brokerage costs when it purchases ETFs.

·
Fixed-Income Securities Risk.  The following risks are associated with the Scharf Fund’s investment in fixed-income securities.

○
Prepayment and Extension Risk.  The risk that the securities may be paid off earlier or later than expected.  Either situation could cause securities to pay lower-than-market rates of interest, which could hurt the Scharf Fund’s yield or share price.

○
Interest Rate Risk.  Interest rate risk is the risk that fixed income securities will decline in value because of changes in interest rates.  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.

○
Credit Risk.  Credit risk is the risk of loss on an investment due to the deterioration of an issuer’s financial health.  Such a deterioration of financial health may result in a reduction of the credit rating of the issuer’s securities and may lead to the issuer’s inability to honor its contractual obligations including making timely payment of interest and principal.

○
High-Yield Securities Risk.  Fixed-income securities that are rated below investment grade (i.e., “junk bonds”) are subject to additional risk factors due to the speculative nature of these securities, such as increased possibility of default liquidation of the security, and changes in value based on public perception of the issuer.

○
Municipal Securities Risk.  Municipal securities rely on the creditworthiness or revenue production of their issuers or auxiliary credit enhancement features.  Municipal securities may be difficult to obtain because of limited supply, which may increase the cost of such securities and effectively reduce a portfolio’s yield.  Typically, less information is available about a municipal issuer than is available for other types of securities issuers.

○
Asset-Backed Securities Risk.  Asset-Backed Securities Risk includes Market Risk, Interest Rate Risk, Credit Risk, and Prepayment Risk.

○
Exchange-Traded Note Risk.  The value of an ETN may be influenced by time to maturity, level of supply and demand for the ETN, volatility and lack of liquidity in the underlying securities’ markets, changes in the applicable interest rates, changes in the issuer’s credit rating and economic, legal, political or geographic events that affect the referenced index.  In addition, the notes issued by ETNs and held by the Scharf Fund are unsecured debt of the issuer.

○
Bank Debt Risk.  The Scharf Fund’s investments in secured and unsecured assignments of bank debt may create substantial risk.  In making investments in such debt, which are loans made by banks or other financial intermediaries to borrowers, the Fund will depend primarily upon the creditworthiness of the borrower for payment of principal and interest.

○
Inflation Protected Securities Risk.  Inflation protected securities include the risk that the rate of inflation will be lower than expected or that the relevant index intended to measure the rate of inflation will accurately measure the rate of inflation and the securities will not work as intended.

○
Rule 144A Securities Risk.  The market for Rule 144A securities typically is less active than the market for publicly-traded securities. Rule 144A securities carry the risk that the liquidity of these securities may become impaired, making it more difficult for the Scharf Fund to sell these securities.

○
Convertible Bond Risk.  Convertible bonds are hybrid securities that have characteristics of both bonds and common stocks and are therefore subject to both debt security risks and equity risk.  Convertible bonds are subject to equity risk especially when their conversion value is greater than the interest and principal value of the bond.  The prices of equity securities may rise or fall because of economic or political changes and may decline over short or extended periods of time.

·
Special Situations Risk.  There is a risk that the special situation (i.e., spin-off, liquidation, merger, etc.) might not occur, which could have a negative impact on the price of the issuer’s securities and fail to produce gains or produce a loss for the Scharf Fund.  In addition, investments in special situation companies may be illiquid and difficult to value, which will require the Fund to employ fair value procedures to value its holdings in such investments.
Risk Lose Money [Text] rr_RiskLoseMoney Losing all or a portion of your investment is a risk of investing in the Scharf 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 Scharf 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 1 year, 5 year and since inception 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.scharffunds.com or by calling the Fund toll-free at 866-5SCHARF.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following information provides some indication of the risks of investing in the Scharf Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 866-5SCHARF
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.scharffunds.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 Annual Returns as of December 31 – Institutional Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
During the period of time shown in the bar chart, the highest return for a calendar quarter was 11.63% (quarter ended March 31, 2012) and the lowest return for a calendar quarter was -5.35% (quarter ended September 30, 2015).
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2012
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 11.63%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (5.35%)
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 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 Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”).
Caption rr_AverageAnnualReturnCaption Average Annual Total Returns (for the periods ended December 31, 2016)
Scharf Fund | S&P 500® Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel S&P 500® Index (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 11.96%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 14.66%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 14.65%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 30, 2011
Scharf Fund | Retail Class  
Risk/Return: rr_RiskReturnAbstract  
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management Fees rr_ManagementFeesOverAssets 0.99%
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 0.23%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.49% [1]
Less: Fee Waiver rr_FeeWaiverOrReimbursementOverAssets (0.13%) [2]
Total Annual Fund Operating Expenses After Fee Waiver rr_NetExpensesOverAssets 1.36%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 138
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 458
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 801
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,768
Label rr_AverageAnnualReturnLabel Retail Class Return Before Taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 3.64% [3]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 12.21% [3]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 12.20% [3]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Jan. 28, 2015 [3]
Scharf Fund | Institutional Class  
Risk/Return: rr_RiskReturnAbstract  
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Management Fees rr_ManagementFeesOverAssets 0.99%
Distribution and Service (Rule 12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Servicing Plan Fee rr_Component1OtherExpensesOverAssets 0.10%
Other Expenses (includes Shareholder Servicing Plan Fee) rr_OtherExpensesOverAssets 0.24%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.25% [1]
Less: Fee Waiver rr_FeeWaiverOrReimbursementOverAssets (0.14%) [2]
Total Annual Fund Operating Expenses After Fee Waiver rr_NetExpensesOverAssets 1.11%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 113
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 383
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 673
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,499
Annual Return 2012 rr_AnnualReturn2012 15.36%
Annual Return 2013 rr_AnnualReturn2013 28.65%
Annual Return 2014 rr_AnnualReturn2014 15.05%
Annual Return 2015 rr_AnnualReturn2015 1.44%
Annual Return 2016 rr_AnnualReturn2016 3.94%
Label rr_AverageAnnualReturnLabel Institutional Class Return Before Taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 3.94% [3]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 12.48% [3]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 12.47% [3]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 30, 2011 [3]
Scharf Fund | Institutional Class | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel Institutional Class Return After Taxes on Distributions
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 3.89% [3]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 12.08% [3]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 12.07% [3]
Scharf 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 Returns, 1 Year rr_AverageAnnualReturnYear01 2.26% [3]
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 9.97% [3]
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 9.97% [3]
[1] Total Annual Fund Operating Expenses do not correlate to the Ratio of Expenses to Average Net Assets Before Fee Waivers in the Financial Highlights section of the statutory prospectus, which reflects the operating expenses of the Scharf Fund and does not include expenses attributed to acquired fund fees and expenses ("AFFE").
[2] Scharf Investments, LLC (the "Adviser") has contractually agreed to waive a portion or all of its management fees and pay Scharf Fund expenses in order to limit Total Annual Fund Operating Expenses After Fee Waiver (excluding AFFE, interest, taxes and extraordinary expenses) to 1.34% of average daily net assets of the Retail Class shares and 1.09% of average daily net assets of the Institutional Class shares (the "Expense Caps"). The Expense Caps will remain in effect through at least January 27, 2018, and may be terminated only by the Board of Trustees (the "Board") of the Trust. The Adviser may request recoupment of previously waived fees and expenses from the Fund for three years from the date they were waived or paid, subject to the Expense Caps.
[3] The Institutional Class incepted on December 30, 2011 and the Retail Class incepted on January 28, 2015. Retail Class performance for the period from December 30, 2011 to January 28, 2015, reflects the performance of the Institutional Class, adjusted to reflect Retail Class fees and expenses.