Document and Entity Information
| Label | Element | Value |
|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | |
| Document Type | dei_DocumentType | 485BPOS |
| Document Period End Date | dei_DocumentPeriodEndDate | Dec. 31, 2010 |
| Registrant Name | dei_EntityRegistrantName | FENIMORE ASSET MANAGEMENT TRUST |
| Central Index Key | dei_EntityCentralIndexKey | 0000797136 |
| Amendment Flag | dei_AmendmentFlag | false |
| Document Creation Date | dei_DocumentCreationDate | Apr. 29, 2011 |
| Document Effective Date | dei_DocumentEffectiveDate | May 01, 2011 |
| Prospectus Date | rr_ProspectusDate | May 01, 2011 |
Risk_Return Summary - (FAM Value Fund) (Investor Share Calss)
| Investor Share Class | FAM Value Fund | ||||||||||||||||||||
FAM Value Fund Investor Share Class | ||||||||||||||||||||
Investment Objective: | ||||||||||||||||||||
FAM Value Fund's investment objective is to maximize long-term return on capital. | ||||||||||||||||||||
Fees and Expenses of the Fund: | ||||||||||||||||||||
The tables below describe the fees and expenses that you may pay if you buy and hold shares of the Fund. | ||||||||||||||||||||
SHAREHOLDER FEES (fees paid directly from your investment) | ||||||||||||||||||||
| ||||||||||||||||||||
ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your Investment) | ||||||||||||||||||||
| ||||||||||||||||||||
Expense Example: | ||||||||||||||||||||
This Example is intended to help you compare 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||||||||||||||||||||
EXPENSE EXAMPLE | ||||||||||||||||||||
| ||||||||||||||||||||
Portfolio Turnover: | ||||||||||||||||||||
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 5.08% of the average value of its portfolio. | ||||||||||||||||||||
Principal Investment Strategies: | ||||||||||||||||||||
Fenimore Asset Management, Inc.("Fenimore"), the investment advisor to the Fund, employs a "value approach" in making its common stock selections. This approach based on Fenimore's belief that at any given point in time the stock price of a company may sell below the company's " true business worth". Factors considered in evaluating the true business worth include the company's current earnings and Fenimore's opinion as to its future earnings potential. After identifying a company whose securities are determined to have a favorable price-to-earnings relationship, Fenimore plans to invest in such securities until the"true business worth "nears the market price of the company's securities.
Under normal market conditions, the Fund will attempt to remain fully invested in common stocks and securities that are convertible into common stocks, such as convertible bonds and convertible preferred stocks. The Fund may invest in the securities of issuers of all sizes and market capitalizations. | ||||||||||||||||||||
Principal Risks: | ||||||||||||||||||||
• Stock Market Risk- the value of stocks fluctuate in response to the activities of individual companies and general stock market and economic conditions. Stock prices may decline over short or extended periods of time. Stocks are more volatile and riskier than some other forms of investments. • Stock Selection Risk- the value stocks chosen for the Fund are subject to the risk that the market may never realize their intrinsic value or their prices may go down. • Small-Cap Risk- small capitalization companies may not have the size, resources or other assets of large capitalization companies. • Market Risk- the value of your investment will go up and down, which means that you could lose money. | ||||||||||||||||||||
Annual Total Return: | ||||||||||||||||||||
The following bar chart and table show some indication of the risks of investing in the Fund. The bar chart shows changes in the Investor Class shares performance since 2001. The table shows how Investor Class shares' average annual returns (before and after taxes) for the one year; five year and ten year periods compared to those of the Russell 2000 Index. 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 may be obtained at the Fund's website www.famfunds.com. | ||||||||||||||||||||
FAM VALUE FUND | ||||||||||||||||||||
![]() | ||||||||||||||||||||
Best Quarter (ended 3/31/03): 13.18%
Worst Quarter (ended 12/31/08): -20.68% | ||||||||||||||||||||
AVERAGE ANNUAL TOTAL RETURN
(for the years ending December 31, 2010) INVESTOR CLASS | ||||||||||||||||||||
| ||||||||||||||||||||
The after-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts, or to investors who are tax exempt. |
Risk_Return Detail Data - (FAM Value Fund) (Investor Share Class)
| Label | Element | Value |
|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | |
| Registrant Name | dei_EntityRegistrantName | FENIMORE ASSET MANAGEMENT TRUST |
| Prospectus Date | rr_ProspectusDate | May 01, 2011 |
Investor Share Class | FAM Value Fund | Investor Class | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Maximum sales charge (load) on purchase | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none |
| Maximum deferred sales charge (load) | rr_MaximumDeferredSalesChargeOverOther | none |
| Redemption fee | rr_RedemptionFeeOverRedemption | none |
| Management Fees | rr_ManagementFeesOverAssets | 1.00% |
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none |
| Other expenses | rr_OtherExpensesOverAssets | 0.23% |
| Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.01% |
| Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.24% |
| 1 YEAR | rr_ExpenseExampleYear01 | 126 |
| 3 YEARS | rr_ExpenseExampleYear03 | 393 |
| 5 YEARS | rr_ExpenseExampleYear05 | 681 |
| 10 YEARS | rr_ExpenseExampleYear10 | 1,500 |
| Annual Return 2001 | rr_AnnualReturn2001 | 15.07% |
| Annual Return 2002 | rr_AnnualReturn2002 | (5.33%) |
| Annual Return 2003 | rr_AnnualReturn2003 | 24.98% |
| Annual Return 2004 | rr_AnnualReturn2004 | 16.86% |
| Annual Return 2005 | rr_AnnualReturn2005 | 5.56% |
| Annual Return 2006 | rr_AnnualReturn2006 | 8.73% |
| Annual Return 2007 | rr_AnnualReturn2007 | (0.79%) |
| Annual Return 2008 | rr_AnnualReturn2008 | (28.68%) |
| Annual Return 2009 | rr_AnnualReturn2009 | 22.18% |
| Annual Return 2010 | rr_AnnualReturn2010 | 17.02% |
| Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | Best Quarter |
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Mar. 31, 2003 |
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 13.18% |
| Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | Worst Quarter |
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Dec. 31, 2008 |
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (20.68%) |
| 1 YEAR | rr_AverageAnnualReturnYear01 | 17.02% |
| 5 YEARS | rr_AverageAnnualReturnYear05 | 1.92% |
| 10 YEARS | rr_AverageAnnualReturnYear10 | 6.33% |
Investor Share Class | FAM Value Fund | Investor Class | Return after taxes on distributions | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| 1 YEAR | rr_AverageAnnualReturnYear01 | 16.72% |
| 5 YEARS | rr_AverageAnnualReturnYear05 | 1.32% |
| 10 YEARS | rr_AverageAnnualReturnYear10 | 5.73% |
Investor Share Class | FAM Value Fund | Investor Class | Return after taxes on distributions and sale of fund share | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| 1 YEAR | rr_AverageAnnualReturnYear01 | 11.37% |
| 5 YEARS | rr_AverageAnnualReturnYear05 | 1.48% |
| 10 YEARS | rr_AverageAnnualReturnYear10 | 5.37% |
Investor Share Class | FAM Value Fund | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk/Return [Heading] | rr_RiskReturnHeading | FAM Value Fund Investor Share Class |
| Objective [Heading] | rr_ObjectiveHeading | Investment Objective: |
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | FAM Value Fund's investment objective is to maximize long-term return on capital. |
| Expense [Heading] | rr_ExpenseHeading | Fees and Expenses of the Fund: |
| Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The tables below describe the fees and expenses that you may pay if you buy and hold shares of the 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) |
| 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 5.08% of the average value of its portfolio. |
| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 5.08% |
| Expense Example [Heading] | rr_ExpenseExampleHeading | Expense Example: |
| Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
| Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | EXPENSE EXAMPLE |
| Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies: |
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Fenimore Asset Management, Inc.("Fenimore"), the investment advisor to the Fund, employs a "value approach" in making its common stock selections. This approach based on Fenimore's belief that at any given point in time the stock price of a company may sell below the company's " true business worth". Factors considered in evaluating the true business worth include the company's current earnings and Fenimore's opinion as to its future earnings potential. After identifying a company whose securities are determined to have a favorable price-to-earnings relationship, Fenimore plans to invest in such securities until the"true business worth "nears the market price of the company's securities.
Under normal market conditions, the Fund will attempt to remain fully invested in common stocks and securities that are convertible into common stocks, such as convertible bonds and convertible preferred stocks. The Fund may invest in the securities of issuers of all sizes and market capitalizations. |
| Risk [Heading] | rr_RiskHeading | Principal Risks: |
| Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | • Stock Market Risk- the value of stocks fluctuate in response to the activities of individual companies and general stock market and economic conditions. Stock prices may decline over short or extended periods of time. Stocks are more volatile and riskier than some other forms of investments. • Stock Selection Risk- the value stocks chosen for the Fund are subject to the risk that the market may never realize their intrinsic value or their prices may go down. • Small-Cap Risk- small capitalization companies may not have the size, resources or other assets of large capitalization companies. • Market Risk- the value of your investment will go up and down, which means that you could lose money. |
| Risk Lose Money [Text] | rr_RiskLoseMoney | the value of your investment will go up and down, which means that you could lose money. |
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Annual Total Return: |
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The following bar chart and table show some indication of the risks of investing in the Fund. The bar chart shows changes in the Investor Class shares performance since 2001. The table shows how Investor Class shares' average annual returns (before and after taxes) for the one year; five year and ten year periods compared to those of the Russell 2000 Index. 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 may be obtained at the Fund's website www.famfunds.com. |
| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart shows changes in the Investor Class shares performance since 2001. The table shows how Investor Class shares' average annual returns (before and after taxes) for the one year; five year and ten year periods compared to those of the Russell 2000 Index. |
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.famfunds.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 | FAM VALUE FUND |
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Best Quarter (ended 3/31/03): 13.18%
Worst Quarter (ended 12/31/08): -20.68% |
| Performance Table Heading | rr_PerformanceTableHeading | AVERAGE ANNUAL TOTAL RETURN
(for the years ending December 31, 2010) INVESTOR CLASS |
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns shown in the table 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 Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts, or to investors who are tax exempt. |
| Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | The after-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts, or to investors who are tax exempt. |
Investor Share Class | FAM Value Fund | Russell 2000 Index | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| 1 YEAR | rr_AverageAnnualReturnYear01 | 26.85% |
| 5 YEARS | rr_AverageAnnualReturnYear05 | 4.47% |
| 10 YEARS | rr_AverageAnnualReturnYear10 | 6.33% |
Risk_Return Summary - (FAM Equity-Income Fund) (Investor Share Class)
| Investor Share Class | FAM Equity-Income Fund | ||||||||||||||||||||||||||
FAM Equity-Income Fund Investor Share Class | ||||||||||||||||||||||||||
Investment Objective: | ||||||||||||||||||||||||||
FAM Equity-Income Fund's investment objective is to provide current income as well as long-term capital appreciation by investing primarily (at least 80% of its total assets) in income-producing stocks that pay dividends. The Fund distributes its income on a quarterly basis. | ||||||||||||||||||||||||||
Fees and Expenses of the Fund: | ||||||||||||||||||||||||||
The tables below describe the fees and expenses that you may pay if you buy and hold shares of the Fund. | ||||||||||||||||||||||||||
SHAREHOLDER FEES (fees paid directly from your investment) | ||||||||||||||||||||||||||
| ||||||||||||||||||||||||||
ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment) | ||||||||||||||||||||||||||
| ||||||||||||||||||||||||||
Expense Example: | ||||||||||||||||||||||||||
This Example is intended to help you compare 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||||||||||||||||||||||||||
EXPENSE EXAMPLE | ||||||||||||||||||||||||||
| ||||||||||||||||||||||||||
Portfolio Turnover: | ||||||||||||||||||||||||||
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 13.38% of the average value of its portfolio. | ||||||||||||||||||||||||||
Principal Investment Strategies: | ||||||||||||||||||||||||||
Fenimore Asset Management, Inc. ("Fenimore"), the investment advisor to the Fund employs a "value approach" in making its common stock selections. This approach is based on Fenimore's belief that at any given point in time the stock price of a company may sell below the company's "true business worth". Factors considered in evaluating the true business worth include the company's current earnings and Fenimore's opinion as to its future earnings potential. After identifying a company whose securities are determined to have a favorable price-to-earnings relationship, Fenimore plans to invest in such securities until the "true business worth" nears the market price of the company's securities.
Under normal market conditions, the Fund will attempt to remain fully invested in common stocks and securities that are convertible into common stocks, such as convertible bonds and convertible preferred stocks. The Fund may invest in the securities of issuers of all sizes and market capitalizations. | ||||||||||||||||||||||||||
Principal Risks: | ||||||||||||||||||||||||||
• Stock Market Risk- the value of stocks fluctuate in response to the activities of individual companies and general stock market and economic conditions. Stock prices may decline over short or extended periods of time. Stocks are more volatile and riskier than some other forms of investments. • Stock Selection Risk- the value stocks chosen for the Fund are subject to the risk that the market may never realize their intrinsic value or their prices may go down. • Small-Cap Risk- small capitalization companies may not have the size, resources or other assets of large capitalization companies. • Market Risk- the value of your investment will go up and down, which means that you could lose money. | ||||||||||||||||||||||||||
| Annual Total Return: | ||||||||||||||||||||||||||
The following bar chart and table show some indication of the risks of investing in the Fund. The bar chart shows changes in the Investor Share Class performance since 2001. The table shows how Investor Class shares' average annual returns (before and after taxes) for the of one year, five year and ten year periods compared to those of the Russell 2000 Index. 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 may be obtained at the Fund's website www.famfunds.com. | ||||||||||||||||||||||||||
FAM EQUITY-INCOME FUND | ||||||||||||||||||||||||||
![]() | ||||||||||||||||||||||||||
Best Quarter (ended 6/30/09): 16.68%
Worst Quarter (ended12/31/08): -21.88% | ||||||||||||||||||||||||||
AVERAGE ANNUAL TOTAL RETURN (for the years ending December 31, 2010) INVESTOR CLASS | ||||||||||||||||||||||||||
| ||||||||||||||||||||||||||
The after-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts, or to investors who are tax exempt. | ||||||||||||||||||||||||||
Risk_Return Detail Data - (FAM Equity-Income Fund) (Investor Share Class)
| Label | Element | Value | ||
|---|---|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | |||
| Registrant Name | dei_EntityRegistrantName | FENIMORE ASSET MANAGEMENT TRUST | ||
| Prospectus Date | rr_ProspectusDate | May 01, 2011 | ||
Investor Share Class | FAM Equity-Income Fund | Investor Class | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Maximum sales charge (load) on purchase | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | ||
| Maximum deferred sales charge (load) | rr_MaximumDeferredSalesChargeOverOfferingPrice | none | ||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | ||
| Management Fees | rr_ManagementFeesOverAssets | 1.00% | ||
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | ||
| Other expenses | rr_OtherExpensesOverAssets | 0.40% | [1] | |
| Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.01% | ||
| Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.41% | ||
| Fee Waiver and/or Expense Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | 0.01% | ||
| Total annual fund operating expenses after fee waiver and/or expense reimbursement | rr_NetExpensesOverAssets | 1.40% | ||
| 1 YEAR | rr_ExpenseExampleYear01 | 144 | ||
| 3 YEARS | rr_ExpenseExampleYear03 | 446 | ||
| 5 YEARS | rr_ExpenseExampleYear05 | 771 | ||
| 10 YEARS | rr_ExpenseExampleYear10 | 1,691 | ||
| Annual Return 2001 | rr_AnnualReturn2001 | 20.79% | ||
| Annual Return 2002 | rr_AnnualReturn2002 | (2.25%) | ||
| Annual Return 2003 | rr_AnnualReturn2003 | 20.30% | ||
| Annual Return 2004 | rr_AnnualReturn2004 | 14.04% | ||
| Annual Return 2005 | rr_AnnualReturn2005 | 5.75% | ||
| Annual Return 2006 | rr_AnnualReturn2006 | 6.57% | ||
| Annual Return 2007 | rr_AnnualReturn2007 | (3.64%) | ||
| Annual Return 2008 | rr_AnnualReturn2008 | (29.04%) | ||
| Annual Return 2009 | rr_AnnualReturn2009 | 21.43% | ||
| Annual Return 2010 | rr_AnnualReturn2010 | 17.47% | ||
| Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | Best Quarter | ||
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Jun. 30, 2009 | ||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 16.68% | ||
| Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | Worst Quarter | ||
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Dec. 31, 2008 | ||
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (21.88%) | ||
| 1 YEAR | rr_AverageAnnualReturnYear01 | 17.47% | ||
| 5 YEARS | rr_AverageAnnualReturnYear05 | 0.78% | ||
| 10 YEARS | rr_AverageAnnualReturnYear10 | 5.94% | ||
Investor Share Class | FAM Equity-Income Fund | Investor Class | Return after taxes on distributions | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| 1 YEAR | rr_AverageAnnualReturnYear01 | 16.62% | ||
| 5 YEARS | rr_AverageAnnualReturnYear05 | (0.12%) | ||
| 10 YEARS | rr_AverageAnnualReturnYear10 | 5.23% | ||
Investor Share Class | FAM Equity-Income Fund | Investor Class | Return after taxes on distributions and sale of fund share | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| 1 YEAR | rr_AverageAnnualReturnYear01 | 11.32% | ||
| 5 YEARS | rr_AverageAnnualReturnYear05 | 0.33% | ||
| 10 YEARS | rr_AverageAnnualReturnYear10 | 4.88% | ||
Investor Share Class | FAM Equity-Income Fund | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk/Return [Heading] | rr_RiskReturnHeading | FAM Equity-Income Fund Investor Share Class | ||
| Objective [Heading] | rr_ObjectiveHeading | Investment Objective: | ||
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | FAM Equity-Income Fund's investment objective is to provide current income as well as long-term capital appreciation by investing primarily (at least 80% of its total assets) in income-producing stocks that pay dividends. The Fund distributes its income on a quarterly basis. | ||
| Expense [Heading] | rr_ExpenseHeading | Fees and Expenses of the Fund: | ||
| Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The tables below describe the fees and expenses that you may pay if you buy and hold shares of the 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) | ||
| 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 13.38% of the average value of its portfolio. | ||
| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 13.38% | ||
| Expense Example [Heading] | rr_ExpenseExampleHeading | Expense Example: | ||
| Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||
| Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | EXPENSE EXAMPLE | ||
| Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies: | ||
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Fenimore Asset Management, Inc. ("Fenimore"), the investment advisor to the Fund employs a "value approach" in making its common stock selections. This approach is based on Fenimore's belief that at any given point in time the stock price of a company may sell below the company's "true business worth". Factors considered in evaluating the true business worth include the company's current earnings and Fenimore's opinion as to its future earnings potential. After identifying a company whose securities are determined to have a favorable price-to-earnings relationship, Fenimore plans to invest in such securities until the "true business worth" nears the market price of the company's securities.
Under normal market conditions, the Fund will attempt to remain fully invested in common stocks and securities that are convertible into common stocks, such as convertible bonds and convertible preferred stocks. The Fund may invest in the securities of issuers of all sizes and market capitalizations. | ||
| Risk [Heading] | rr_RiskHeading | Principal Risks: | ||
| Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | • Stock Market Risk- the value of stocks fluctuate in response to the activities of individual companies and general stock market and economic conditions. Stock prices may decline over short or extended periods of time. Stocks are more volatile and riskier than some other forms of investments. • Stock Selection Risk- the value stocks chosen for the Fund are subject to the risk that the market may never realize their intrinsic value or their prices may go down. • Small-Cap Risk- small capitalization companies may not have the size, resources or other assets of large capitalization companies. • Market Risk- the value of your investment will go up and down, which means that you could lose money. | ||
| Risk Lose Money [Text] | rr_RiskLoseMoney | the value of your investment will go up and down, which means that you could lose money. | ||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Annual Total Return: | ||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The following bar chart and table show some indication of the risks of investing in the Fund. The bar chart shows changes in the Investor Share Class performance since 2001. The table shows how Investor Class shares' average annual returns (before and after taxes) for the of one year, five year and ten year periods compared to those of the Russell 2000 Index. 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 may be obtained at the Fund's website www.famfunds.com. | ||
| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart shows changes in the Investor Share Class performance since 2001. The table shows how Investor Class shares' average annual returns (before and after taxes) for the of one year, five year and ten year periods compared to those of the Russell 2000 Index. | ||
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.famfunds.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 | FAM EQUITY-INCOME FUND | ||
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Best Quarter (ended 6/30/09): 16.68%
Worst Quarter (ended12/31/08): -21.88% | ||
| Performance Table Heading | rr_PerformanceTableHeading | AVERAGE ANNUAL TOTAL RETURN (for the years ending December 31, 2010) INVESTOR CLASS | ||
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns shown in the table 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 Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts, or to investors who are tax exempt. | ||
| Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | The after-tax returns shown in the table are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts, or to investors who are tax exempt. | ||
Investor Share Class | FAM Equity-Income Fund | Russell 2000 Index | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| 1 YEAR | rr_AverageAnnualReturnYear01 | 26.85% | ||
| 5 YEARS | rr_AverageAnnualReturnYear05 | 4.47% | ||
| 10 YEARS | rr_AverageAnnualReturnYear10 | 6.33% | ||
| ||||

