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Akre Focus Fund  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Akre Focus Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Akre Focus Fund (the “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, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and expense example below. Institutional Shares may also be available on certain brokerage platforms. An investor transacting in Institutional Shares through a broker acting as an agent for the investor may be required to pay a commission and/or other forms of compensation to the broker.
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)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
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 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 10% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 10.00%
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 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.
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 Fund invests primarily in securities of companies listed on U.S. stock exchanges. Investments consist primarily of common stocks of companies of any size market capitalization. The Fund may also invest in preferred stocks, warrants, options, and other equity-like instruments, such as partnership interests, limited liability company interests, business trust shares and rights, Real Estate Investment Trusts (“REITs”), and other securities that are convertible into equity securities. The Fund may invest up to 15% of its total assets in securities issued by foreign issuers, including in American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”), Global Depositary Receipts (“GDRs”), and directly in foreign equity securities. Additionally, the Fund may participate in securities lending arrangements of up to 33-1/3% of its total asset value with brokers, dealers, and financial institutions (but not individuals) in order to increase the return on its portfolio. The Fund may, from time to time, have significant exposure to one or more sectors of the market. As of July 31, 2021, 38.2% of the Fund’s net assets were invested in securities of issuers within the information technology sector.
Although the Fund normally holds a focused portfolio of equity securities, the Fund is not required to be fully invested in such securities and may maintain a significant portion of its total assets in cash and securities generally considered to be cash equivalents. In certain market conditions, the Advisor may determine that it is appropriate for the Fund to hold a significant cash position for an extended period of time.
Akre Capital Management, LLC (the “Advisor”) principally seeks to identify companies which may earn higher-than-average returns on shareholders’ equity; are managed, in the Advisor’s judgment, by individuals who have a history of treating public shareholders like partners; and have ample opportunity to reinvest excess profits at above-average rates. Once a potential investment is identified, the Advisor attempts to purchase shares at valuations the Advisor considers modest-to-reasonable, relative to the nature of the business, and the expected growth in economic value per share. The Fund is non-diversified under the Investment Company Act of 1940, as amended (the “1940 Act”), and may invest a larger percentage of its assets in fewer issuers than diversified mutual funds.
The Advisor may sell a security for a variety of reasons, including, without limitation, when: (1) a security subsequently fails to meet the Advisor’s initial investment criteria; (2) an issuer specific event, such as an acquisition or recapitalization, changes the fundamental operations of the company; (3) upon comparative analysis, a new security is judged to be more attractive than a current holding; (4) views change of the individual holdings as well as the general market; or (5) something changes for the worse in the business model, management or governance, or future opportunity for reinvestment.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund. The following risks are considered principal to the Fund and could affect the value of your investment:
Equity Securities Risk – Equity Securities are susceptible to general stock market fluctuations which may result in volatile increases and decreases in value. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions. These fluctuations may cause a security to be worth less than its cost when originally purchased or less than it was worth at an earlier time.
Large-Cap Investment 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.
Management Risk – The Fund may not meet its investment objective based on the Advisor’s success or failure to implement investment strategies for the Fund.
Market and Regulatory Risk – Events in the financial markets and economy may cause volatility and uncertainty and adversely impact the Fund’s performance. Such adverse effect on performance could include a decline in the value and liquidity of securities held by the Fund, unusually high and unanticipated levels of redemptions, an increase in portfolio turnover, a decrease in NAV, and an increase in Fund expenses. In addition, because of interdependencies between markets, events in one market may adversely impact markets or issuers in which the Fund invests in unforeseen ways. Traditionally, liquid investments may experience periods of diminished liquidity. During a general downturn in the financial markets, multiple asset classes may decline in value and the Fund may lose value, regardless of the individual results of the securities and other instruments in which the Fund invests. It is impossible to predict whether or for how long such market events or conditions. Therefore it is important to understand that the value of your investment may fall, sometimes sharply and for extended periods, and you could lose money.
Mid-Cap and Small-Cap Investment Risk – Securities of mid-cap and small-cap companies may possess comparatively greater price volatility and less liquidity than the securities of companies that have larger market capitalizations.
Non-Diversification Risk – The Fund is classified as non-diversified under the 1940 Act, which means the Fund may invest a larger percentage of its assets in the securities of a smaller number of issuers than a diversified fund. Investment in securities of a limited number of issuers may expose the Fund to greater market risk and potential losses than if its assets were diversified among the securities of a greater number of issuers.
Sector Emphasis Risk: From time to time, the Fund may invest 25% or more of its assets in one or more sectors subjecting the Fund to sector emphasis risk. This is the risk that the Fund is subject to a greater risk of loss as a result of adverse economic, business, or other developments affecting a specific sector that the Fund has a focused position in, than if its investments were diversified across a greater number of industry sectors. Some sectors possess particular risks that may not affect other sectors.
Information Technology Sector Risk: The information technology sector can be significantly affected by rapid obsolescence of existing technology, short product cycles, falling prices and profits, competition from new market entrants, government regulation, and general economic conditions.

The remaining principal risks are presented in alphabetical order. Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears.

Cash Position Risk – To the extent that the Fund holds large positions in cash or cash equivalents, there is a risk of lower returns and potential lost opportunities to participate in market appreciation.
Depositary Receipts Risk – Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social, and economic developments abroad, currency movements, and different legal, regulatory, and tax environments.
Derivatives Risk – The Fund’s use of derivatives may reduce the Fund’s returns and/or increase volatility. A risk of the Fund’s use of derivatives is that the fluctuations in their values may not correlate perfectly with the overall securities markets. As a result of the structure of certain derivatives, adverse changes in the value of the underlying instrument can result in a counterparty’s losses being substantially greater than the amount invested in the derivative itself.
Foreign Securities Risk – Foreign securities are subject to increased risks including political and economic risks, greater volatility, currency fluctuations, higher transaction costs, and delayed
settlement, possible foreign controls on investment, and less stringent investor protection and disclosure standards of foreign markets.
Options Risk – Options on securities may be subject to greater fluctuations in value than an investment in the underlying securities. Purchasing and writing put and call options are highly specialized activities and entail greater than ordinary investment risks. There are significant differences between the securities and options markets that could result in an imperfect correlation between these markets, causing a given transaction not to achieve its objectives.
Real Estate Investment Trusts Risk – In addition to the risks facing real estate-related securities, such as a decline in property values due to increasing vacancies, a decline in rents resulting from unanticipated economic, legal, or technological developments, or a decline in the price of securities of real estate companies due to a failure of borrowers to pay their loans or poor management, investments in REITs involve unique risks. REITs may have limited financial resources, may trade less frequently and in limited volume, and may be more volatile than other securities.
Securities Lending Risk – There are certain risks associated with securities lending, including the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Fund may lose money.

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as non-diversified under the 1940 Act, which means the Fund may invest a larger percentage of its assets in the securities of a smaller number of issuers than a diversified fund. Investment in securities of a limited number of issuers may expose the Fund to greater market risk and potential losses than if its assets were diversified among the securities of a greater number of issuers.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows the Fund’s performance for the Retail Class and is an illustration of how shares of the Fund’s total returns have varied from year to year. The table below illustrates how the Fund’s average annual total returns for the 1-year, 5-year, 10-year, and since inception periods compare with those of a broad-based securities index. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Retail, Institutional, and Supra Institutional Class performance information is available on the Fund’s website at www.akrefund.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following performance information provides some indication of the risks of investing in the Fund.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.akrefund.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 it will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar Year Total Return as of December 31* – Retail Class
Bar Chart Footnotes [Text Block] rr_BarChartFootnotesTextBlock *The year-to-date return as of September 30, 2021, was 16.18%.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:Q2, 202021.58 %
Lowest Quarterly Return:Q1, 2020-11.20 %
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2021
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 16.18%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 21.58%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (11.20%)
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Return for the periods ended December 31, 2020
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 After-tax returns are calculated using the historical highest individual federal marginal income tax rates and does not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend on your situation and may differ from those shown. Furthermore, the after-tax returns shown are not relevant to those who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (“IRAs”).
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Retail Class shares. After-tax returns for other classes will vary.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
Since Inception return is from August 31, 2009, for the Retail Class shares and Institutional Class shares, and August 31, 2015, for the Supra Institutional Class shares. Performance shown prior to the inception of Supra Institutional Class shares reflects the performance of the Fund’s Institutional Class shares. The performance of the Institutional Class shares is lower than performance of the Supra Institutional Class shares because Supra Institutional Class shares have lower expenses than the Institutional Class shares.
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and does not reflect the impact of state and local taxes. Actual after-tax returns depend on your situation and may differ from those shown. Furthermore, the after-tax returns shown are not relevant to those who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (“IRAs”). After-tax returns are shown only for Retail Class shares. After-tax returns for other classes will vary.
Akre Focus Fund | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel S&P 500® Index (reflects no deduction for fees, expenses, or taxes)
1 Year rr_AverageAnnualReturnYear01 18.40%
5 Years rr_AverageAnnualReturnYear05 15.22%
10 Years rr_AverageAnnualReturnYear10 13.88%
Since Inception rr_AverageAnnualReturnSinceInception 14.51%
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 31, 2009
Akre Focus Fund | Retail Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol AKREX
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (1.00%)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Shareholder Servicing Fee rr_Component1OtherExpensesOverAssets 0.09%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.06%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.30%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 132
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 412
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 713
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,568
Annual Return 2011 rr_AnnualReturn2011 11.09%
Annual Return 2012 rr_AnnualReturn2012 16.04%
Annual Return 2013 rr_AnnualReturn2013 38.90%
Annual Return 2014 rr_AnnualReturn2014 10.56%
Annual Return 2015 rr_AnnualReturn2015 2.53%
Annual Return 2016 rr_AnnualReturn2016 8.29%
Annual Return 2017 rr_AnnualReturn2017 30.49%
Annual Return 2018 rr_AnnualReturn2018 5.26%
Annual Return 2019 rr_AnnualReturn2019 35.03%
Annual Return 2020 rr_AnnualReturn2020 20.37%
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.37%
5 Years rr_AverageAnnualReturnYear05 19.31%
10 Years rr_AverageAnnualReturnYear10 17.24%
Since Inception rr_AverageAnnualReturnSinceInception 17.03%
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 31, 2009
Akre Focus Fund | Retail Class | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 20.37%
5 Years rr_AverageAnnualReturnYear05 19.06%
10 Years rr_AverageAnnualReturnYear10 16.97%
Since Inception rr_AverageAnnualReturnSinceInception 16.79%
Akre Focus Fund | Retail Class | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 12.06%
5 Years rr_AverageAnnualReturnYear05 15.72%
10 Years rr_AverageAnnualReturnYear10 14.69%
Since Inception rr_AverageAnnualReturnSinceInception 14.67%
Akre Focus Fund | Institutional Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol AKRIX
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (1.00%)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Servicing Fee rr_Component1OtherExpensesOverAssets 0.08%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.06%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.04%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 106
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 331
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 574
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,271
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.70%
5 Years rr_AverageAnnualReturnYear05 19.63%
10 Years rr_AverageAnnualReturnYear10 17.56%
Since Inception rr_AverageAnnualReturnSinceInception 17.35%
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 31, 2009
Akre Focus Fund | Supra Institutional Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol AKRSX
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (1.00%)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.90%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Servicing Fee rr_Component1OtherExpensesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.05%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.95%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 97
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 303
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 525
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,166
Label rr_AverageAnnualReturnLabel Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 20.81%
5 Years rr_AverageAnnualReturnYear05 19.74%
10 Years rr_AverageAnnualReturnYear10 17.65%
Since Inception rr_AverageAnnualReturnSinceInception 17.44%
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 31, 2015