| Form N-CSR Cover | 12 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | FENIMORE ASSET MANAGEMENT TRUST |
| Entity Central Index Key | 0000797136 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Dec. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | FENIMORE ASSET MANAGEMENT TRUST |
| Entity Central Index Key | 0000797136 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| C000030128 | |
| Shareholder Report [Line Items] | |
| Fund Name | FAM DIVIDEND FOCUS FUND |
| Class Name | INVESTOR SHARES |
| Trading Symbol | FAMEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about FAM Dividend Focus Fund for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.fenimoreasset.com/resources/reports/ |
| Additional Information Phone Number | (800) 932-3271 |
| Additional Information Email | info@fenimoreasset.com</span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">info@fenimoreasset.com</span> |
| Additional Information Website | www.fenimoreasset.com/resources/reports/ |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Shares $126 1.21% |
| Expenses Paid, Amount | $ 126 |
| Expense Ratio, Percent | 1.21% |
| Line Graph [Table Text Block] | FAM Dividend Focus Fund - Investor Shares S&P 500 ® Russell Midcap ® Dec-2014 $10,000 $10,000 $10,000 Dec-2015 $9,927 $10,138 $9,756 Dec-2016 $12,070 $11,351 $11,102 Dec-2017 $13,596 $13,829 $13,158 Dec-2018 $13,603 $13,223 $11,966 Dec-2019 $18,033 $17,386 $15,621 Dec-2020 $20,413 $20,585 $18,292 Dec-2021 $25,633 $26,494 $22,424 Dec-2022 $22,193 $21,696 $18,541 Dec-2023 $26,564 $27,399 $21,735 Dec-2024 $28,578 $34,254 $25,070 |
| Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years FAM Dividend Focus Fund - Investor Shares 7.58% 9.65% 11.07% S&P 500 ® 25.02% 14.53% 13.10% Russell Midcap ® 15.34% 9.92% 9.63% |
| Material Change Date | Dec. 31, 2024 |
| AssetsNet | $ 749,798,693 |
| Holdings Count | Holding | 28 |
| Advisory Fees Paid, Amount | $ 6,802,792 |
| InvestmentCompanyPortfolioTurnover | 7% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $749,798,693 Number of Portfolio Holdings 28 Advisory Fee $6,802,792 Portfolio turnover 7% |
| Holdings [Text Block] | Portfolio Composition (% of net assets) Value Value Food Products 1.0% Capital Markets 1.1% Industrial Conglomerates 1.7% Life Sciences Tools & Services 1.8% Containers & Packaging 1.9% Distributors 2.5% Professional Services 2.6% Machinery 3.8% Commercial Services & Supplies 3.9% Aerospace & Defense 4.1% Commercial Support Services 4.1% Specialty Retail 4.8% Money Market 4.9% Trading Companies & Distributors 5.4% Semiconductors & Semiconductor Equipment 5.9% Electronic Equipment, Instruments & Components 6.4% Construction Materials 7.4% Health Care Equipment & Supplies 7.8% Insurance 7.9% Building Products 8.7% IT Services 12.3% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net Assets Trane Technologies plc 8.7% Arthur J. Gallagher & Company 7.9% Stryker Corporation 5.1% Broadridge Financial Solutions, Inc. 5.1% CDW Corporation 5.0% Ross Stores, Inc. 4.8% Paychex, Inc. 4.3% HEICO Corporation - Class A 4.1% Republic Services, Inc. 4.1% Cintas Corporation 3.9% |
| Material Fund Change [Text Block] | No material changes occurred during the year ended December 31, 2024. |
| C000164667 | |
| Shareholder Report [Line Items] | |
| Fund Name | FAM SMALL CAP FUND |
| Class Name | INSTITUTIONAL SHARES |
| Trading Symbol | FAMDX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about FAM Small Cap Fund for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.fenimoreasset.com/resources/reports/ |
| Additional Information Phone Number | (800) 932-3271 |
| Additional Information Email | info@fenimoreasset.com</span>" id="sjs-B44"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">info@fenimoreasset.com</span> |
| Additional Information Website | www.fenimoreasset.com/resources/reports/ |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $121 1.14% |
| Expenses Paid, Amount | $ 121 |
| Expense Ratio, Percent | 1.14% |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | FAM Small Cap Fund - Institutional Shares S&P 500 ® Russell 2000 ® Dec-2014 $500,000 $500,000 $500,000 Dec-2015 $482,530 $506,919 $477,930 Dec-2016 $600,356 $567,546 $579,767 Dec-2017 $628,354 $691,451 $664,687 Dec-2018 $569,954 $661,135 $591,478 Dec-2019 $724,139 $869,303 $742,453 Dec-2020 $798,380 $1,029,244 $890,653 Dec-2021 $1,020,518 $1,324,692 $1,022,638 Dec-2022 $894,740 $1,084,779 $813,647 Dec-2023 $1,075,465 $1,369,942 $951,388 Dec-2024 $1,211,483 $1,712,698 $1,061,159 |
| Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years FAM Small Cap Fund - Institutional Shares 12.65% 10.84% 9.25% S&P 500 ® 25.02% 14.53% 13.10% Russell 2000 ® 11.54% 7.40% 7.82% |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Material Change Date | Dec. 31, 2024 |
| AssetsNet | $ 418,522,858 |
| Holdings Count | Holding | 29 |
| Advisory Fees Paid, Amount | $ 3,529,215 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $418,522,858 Number of Portfolio Holdings 29 Advisory Fee $3,529,215 Portfolio turnover 11% |
| Holdings [Text Block] | Portfolio Composition (% of net assets) Value Value Other 0.2% Specialty Retail 1.9% IT Services 2.2% Real Estate Owners & Developers 2.4% Chemicals 2.9% Road & Rail 2.9% Health Care Facilities & Services 2.9% Food Products 3.1% Trading Companies & Distributors 3.2% Gas Utilities 4.2% Machinery 4.9% Insurance 4.9% Money Market 5.0% Media 5.4% Software 5.6% Diversified Consumer Services 7.0% Banks 7.8% Hotels, Restaurants & Leisure 8.1% Real Estate Management & Development 8.9% Professional Services 16.5% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net Assets CBIZ, Inc. 6.9% ExlService Holdings, Inc. 6.7% Colliers International Group, Inc. 5.5% Pinnacle Financial Partners, Inc. 5.0% Dutch Bros, Inc. - Class A 4.2% Brookfield Infrastructure Corporation - Class A 4.1% Choice Hotels International, Inc. 3.9% OneSpaWorld Holdings Ltd. 3.5% Frontdoor, Inc. 3.5% FirstService Corporation 3.4% |
| Material Fund Change [Text Block] | No material changes occurred during the year ended December 31, 2024. |
| C000110096 | |
| Shareholder Report [Line Items] | |
| Fund Name | FAM SMALL CAP FUND |
| Class Name | INVESTOR SHARES |
| Trading Symbol | FAMFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about FAM Small Cap Fund for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.fenimoreasset.com/resources/reports/ |
| Additional Information Phone Number | (800) 932-3271 |
| Additional Information Email | info@fenimoreasset.com</span>" id="sjs-B71"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">info@fenimoreasset.com</span> |
| Additional Information Website | www.fenimoreasset.com/resources/reports/ |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Shares $131 1.23% |
| Expenses Paid, Amount | $ 131 |
| Expense Ratio, Percent | 1.23% |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | FAM Small Cap Fund - Investor Shares S&P 500 ® Russell 2000 ® Dec-2014 $10,000 $10,000 $10,000 Dec-2015 $9,651 $10,138 $9,559 Dec-2016 $11,988 $11,351 $11,595 Dec-2017 $12,533 $13,829 $13,294 Dec-2018 $11,359 $13,223 $11,830 Dec-2019 $14,414 $17,386 $14,849 Dec-2020 $15,869 $20,585 $17,813 Dec-2021 $20,268 $26,494 $20,453 Dec-2022 $17,750 $21,696 $16,273 Dec-2023 $21,320 $27,399 $19,028 Dec-2024 $23,983 $34,254 $21,223 |
| Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years FAM Small Cap Fund - Investor Shares 12.49% 10.72% 9.14% S&P 500 ® 25.02% 14.53% 13.10% Russell 2000 ® 11.54% 7.40% 7.82% |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Material Change Date | Dec. 31, 2024 |
| AssetsNet | $ 418,522,858 |
| Holdings Count | Holding | 29 |
| Advisory Fees Paid, Amount | $ 3,529,215 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $418,522,858 Number of Portfolio Holdings 29 Advisory Fee $3,529,215 Portfolio turnover 11% |
| Holdings [Text Block] | Portfolio Composition (% of net assets) Value Value Other 0.2% Specialty Retail 1.9% IT Services 2.2% Real Estate Owners & Developers 2.4% Chemicals 2.9% Road & Rail 2.9% Health Care Facilities & Services 2.9% Food Products 3.1% Trading Companies & Distributors 3.2% Gas Utilities 4.2% Machinery 4.9% Insurance 4.9% Money Market 5.0% Media 5.4% Software 5.6% Diversified Consumer Services 7.0% Banks 7.8% Hotels, Restaurants & Leisure 8.1% Real Estate Management & Development 8.9% Professional Services 16.5% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net Assets CBIZ, Inc. 6.9% ExlService Holdings, Inc. 6.7% Colliers International Group, Inc. 5.5% Pinnacle Financial Partners, Inc. 5.0% Dutch Bros, Inc. - Class A 4.2% Brookfield Infrastructure Corporation - Class A 4.1% Choice Hotels International, Inc. 3.9% OneSpaWorld Holdings Ltd. 3.5% Frontdoor, Inc. 3.5% FirstService Corporation 3.4% |
| Material Fund Change [Text Block] | No material changes occurred during the year ended December 31, 2024. |
| C000164665 | |
| Shareholder Report [Line Items] | |
| Fund Name | FAM VALUE FUND |
| Class Name | INSTITUTIONAL SHARES |
| Trading Symbol | FAMWX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about FAM Value Fund for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.fenimoreasset.com/resources/reports/ |
| Additional Information Phone Number | (800) 932-3271 |
| Additional Information Email | info@fenimoreasset.com</span>" id="sjs-B98"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">info@fenimoreasset.com</span> |
| Additional Information Website | www.fenimoreasset.com/resources/reports/ |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $107 0.99% |
| Expenses Paid, Amount | $ 107 |
| Expense Ratio, Percent | 0.99% |
| Line Graph [Table Text Block] | FAM Value Fund - Institutional Shares S&P 500 ® Russell Midcap ® Dec-2014 $500,000 $500,000 $500,000 Dec-2015 $491,308 $506,919 $487,807 Dec-2016 $567,958 $567,546 $555,116 Dec-2017 $665,555 $691,451 $657,911 Dec-2018 $625,642 $661,135 $598,317 Dec-2019 $816,866 $869,303 $781,054 Dec-2020 $874,323 $1,029,244 $914,621 Dec-2021 $1,100,458 $1,324,692 $1,121,180 Dec-2022 $946,806 $1,084,779 $927,046 Dec-2023 $1,101,303 $1,369,942 $1,086,750 Dec-2024 $1,275,230 $1,712,698 $1,253,498 |
| Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years FAM Value Fund - Institutional Shares 15.79% 9.32% 9.82% S&P 500 ® 25.02% 14.53% 13.10% Russell Midcap ® 15.34% 9.92% 9.63% |
| Material Change Date | Dec. 31, 2024 |
| AssetsNet | $ 1,764,902,747 |
| Holdings Count | Holding | 28 |
| Advisory Fees Paid, Amount | $ 15,541,786 |
| InvestmentCompanyPortfolioTurnover | 3% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $1,764,902,747 Number of Portfolio Holdings 28 Advisory Fee (net of waivers & recoupments) $15,541,786 Portfolio turnover 3% |
| Holdings [Text Block] | Portfolio Composition (% of net assets) Value Value Food Products 0.9% Oil, Gas & Consumable Fuels 1.6% Diversified Financial Services 1.9% Banks 2.5% Professional Services 2.7% Life Sciences Tools & Services 2.9% Hotels, Restaurants & Leisure 3.2% Trading Companies & Distributors 3.2% Semiconductors & Semiconductor Equipment 4.2% Construction Materials 4.3% Health Care Equipment & Supplies 4.3% Money Market 4.5% Capital Markets 6.4% Specialty Retail 10.3% Machinery 11.8% Electronic Equipment, Instruments & Components 17.4% Insurance 17.9% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net Assets Brown & Brown, Inc. 8.0% Ross Stores, Inc. 6.9% CDW Corporation 5.5% Markel Group, Inc. 5.3% Brookfield Corporation - Class A 5.2% IDEX Corporation 5.1% Progressive Corporation (The) 4.6% Amphenol Corporation - Class A 4.5% Vulcan Materials Company 4.3% Stryker Corporation 4.3% |
| Material Fund Change [Text Block] | No material changes occurred during the year ended December 31, 2024. |
| C000030126 | |
| Shareholder Report [Line Items] | |
| Fund Name | FAM VALUE FUND |
| Class Name | INVESTOR SHARES |
| Trading Symbol | FAMVX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about FAM Value Fund for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.fenimoreasset.com/resources/reports/ |
| Additional Information Phone Number | (800) 932-3271 |
| Additional Information Email | info@fenimoreasset.com</span>" id="sjs-B123"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">info@fenimoreasset.com</span> |
| Additional Information Website | www.fenimoreasset.com/resources/reports/ |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Shares $127 1.18% |
| Expenses Paid, Amount | $ 127 |
| Expense Ratio, Percent | 1.18% |
| Line Graph [Table Text Block] | FAM Value Fund - Investor Shares S&P 500 ® Russell Midcap ® Dec-2014 $10,000 $10,000 $10,000 Dec-2015 $9,826 $10,138 $9,756 Dec-2016 $11,359 $11,351 $11,102 Dec-2017 $13,290 $13,829 $13,158 Dec-2018 $12,469 $13,223 $11,966 Dec-2019 $16,250 $17,386 $15,621 Dec-2020 $17,359 $20,585 $18,292 Dec-2021 $21,809 $26,494 $22,424 Dec-2022 $18,730 $21,696 $18,541 Dec-2023 $21,743 $27,399 $21,735 Dec-2024 $25,129 $34,254 $25,070 |
| Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years FAM Value Fund - Investor Shares 15.57% 9.11% 9.65% S&P 500 ® 25.02% 14.53% 13.10% Russell Midcap ® 15.34% 9.92% 9.63% |
| Material Change Date | Dec. 31, 2024 |
| AssetsNet | $ 1,764,902,747 |
| Holdings Count | Holding | 28 |
| Advisory Fees Paid, Amount | $ 15,541,786 |
| InvestmentCompanyPortfolioTurnover | 3% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $1,764,902,747 Number of Portfolio Holdings 28 Advisory Fee (net of waivers & recoupments) $15,541,786 Portfolio turnover 3% |
| Holdings [Text Block] | Portfolio Composition (% of net assets) Value Value Food Products 0.9% Oil, Gas & Consumable Fuels 1.6% Diversified Financial Services 1.9% Banks 2.5% Professional Services 2.7% Life Sciences Tools & Services 2.9% Hotels, Restaurants & Leisure 3.2% Trading Companies & Distributors 3.2% Semiconductors & Semiconductor Equipment 4.2% Construction Materials 4.3% Health Care Equipment & Supplies 4.3% Money Market 4.5% Capital Markets 6.4% Specialty Retail 10.3% Machinery 11.8% Electronic Equipment, Instruments & Components 17.4% Insurance 17.9% |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net Assets Brown & Brown, Inc. 8.0% Ross Stores, Inc. 6.9% CDW Corporation 5.5% Markel Group, Inc. 5.3% Brookfield Corporation - Class A 5.2% IDEX Corporation 5.1% Progressive Corporation (The) 4.6% Amphenol Corporation - Class A 4.5% Vulcan Materials Company 4.3% Stryker Corporation 4.3% |
| Material Fund Change [Text Block] | No material changes occurred during the year ended December 31, 2024. |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||
| Dec. 31, 2024 | Dec. 31, 2014 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
| C000030128 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | FAM Dividend Focus Fund - Investor Shares | ||||||||||
| Account Value | $ 28,578 | $ 10,000 | $ 26,564 | $ 22,193 | $ 25,633 | $ 20,413 | $ 18,033 | $ 13,603 | $ 13,596 | $ 12,070 | $ 9,927 |
| C000164667 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | FAM Small Cap Fund - Institutional Shares | ||||||||||
| Account Value | $ 1,211,483 | $ 500,000 | 1,075,465 | 894,740 | 1,020,518 | 798,380 | 724,139 | 569,954 | 628,354 | 600,356 | 482,530 |
| C000110096 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | FAM Small Cap Fund - Investor Shares | ||||||||||
| Account Value | $ 23,983 | $ 10,000 | 21,320 | 17,750 | 20,268 | 15,869 | 14,414 | 11,359 | 12,533 | 11,988 | 9,651 |
| C000164665 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | FAM Value Fund - Institutional Shares | ||||||||||
| Account Value | $ 1,275,230 | $ 500,000 | 1,101,303 | 946,806 | 1,100,458 | 874,323 | 816,866 | 625,642 | 665,555 | 567,958 | 491,308 |
| C000030126 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | FAM Value Fund - Investor Shares | ||||||||||
| Account Value | 25,129 | $ 10,000 | 21,743 | 18,730 | 21,809 | 17,359 | 16,250 | 12,469 | 13,290 | 11,359 | 9,826 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C25">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 34,254 | $ 10,000 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B29">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 1,712,698 | $ 500,000 | 1,369,942 | 1,084,779 | 1,324,692 | 1,029,244 | 869,303 | 661,135 | 691,451 | 567,546 | 506,919 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C33">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 34,254 | $ 10,000 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B37">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 1,712,698 | $ 500,000 | 1,369,942 | 1,084,779 | 1,324,692 | 1,029,244 | 869,303 | 661,135 | 691,451 | 567,546 | 506,919 |
| S&P 500 Index | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C41">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | 34,254 | $ 10,000 | 27,399 | 21,696 | 26,494 | 20,585 | 17,386 | 13,223 | 13,829 | 11,351 | 10,138 |
| Russell Midcap Total Return | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C45">Russell Midcap<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 25,070 | $ 10,000 | 21,735 | 18,541 | 22,424 | 18,292 | 15,621 | 11,966 | 13,158 | 11,102 | 9,756 |
| Russell 2000 Total Return | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B49">Russell 2000<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 1,061,159 | $ 500,000 | 951,388 | 813,647 | 1,022,638 | 890,653 | 742,453 | 591,478 | 664,687 | 579,767 | 477,930 |
| Russell 2000 Total Return | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C53">Russell 2000<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 21,223 | $ 10,000 | 19,028 | 16,273 | 20,453 | 17,813 | 14,849 | 11,830 | 13,294 | 11,595 | 9,559 |
| Russell Midcap Total Return | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B57">Russell Midcap<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 1,253,498 | $ 500,000 | 1,086,750 | 927,046 | 1,121,180 | 914,621 | 781,054 | 598,317 | 657,911 | 555,116 | 487,807 |
| Russell Midcap Total Return | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C61">Russell Midcap<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | ||||||||||
| Account Value | $ 25,070 | $ 10,000 | $ 21,735 | $ 18,541 | $ 22,424 | $ 18,292 | $ 15,621 | $ 11,966 | $ 13,158 | $ 11,102 | $ 9,756 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended | |
| Dec. 31, 2024 | Dec. 31, 2014 | Dec. 31, 2024 | Dec. 31, 2024 | |
| C000030128 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | FAM Dividend Focus Fund - Investor Shares | |||
| C000164667 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | FAM Small Cap Fund - Institutional Shares | |||
| C000110096 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | FAM Small Cap Fund - Investor Shares | |||
| C000164665 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | FAM Value Fund - Institutional Shares | |||
| C000030126 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | FAM Value Fund - Investor Shares | |||
| Without Sales Load [Member] | C000030128 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 7.58% | 9.65% | 11.07% | |
| Without Sales Load [Member] | C000164667 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 12.65% | 10.84% | 9.25% | |
| Without Sales Load [Member] | C000110096 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 12.49% | 10.72% | 9.14% | |
| Without Sales Load [Member] | C000164665 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 15.79% | 9.32% | 9.82% | |
| Without Sales Load [Member] | C000030126 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 15.57% | 9.11% | 9.65% | |
| S&P 500 Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C35">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 25.02% | 14.53% | 13.10% | |
| S&P 500 Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B39">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 25.02% | 14.53% | 13.10% | |
| S&P 500 Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C43">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 25.02% | 14.53% | 13.10% | |
| S&P 500 Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B47">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 25.02% | 14.53% | 13.10% | |
| S&P 500 Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C51">S&P 500<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 25.02% | 14.53% | 13.10% | |
| Russell Midcap Total Return | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C55">Russell Midcap<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 15.34% | 9.92% | 9.63% | |
| Russell 2000 Total Return | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B59">Russell 2000<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 11.54% | 7.40% | 7.82% | |
| Russell 2000 Total Return | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C63">Russell 2000<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 11.54% | 7.40% | 7.82% | |
| Russell Midcap Total Return | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-B67">Russell Midcap<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 15.34% | 9.92% | 9.63% | |
| Russell Midcap Total Return | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | ®</sup> Index" id="sjs-C71">Russell Midcap<sup style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center;">®</sup> Index | |||
| Average Annual Return, Percent | 15.34% | 9.92% | 9.63% | |
| Shareholder Report, Holdings (Details) | Dec. 31, 2024 |
| C000030128 | G8994E103 | Trane Technologies plc | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000030128 | 363576109 | Arthur J. Gallagher & Company | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000030128 | 863667101 | Stryker Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000030128 | 11133T103 | Broadridge Financial Solutions, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000030128 | 12514G108 | CDW Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000030128 | 778296103 | Ross Stores, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000030128 | 704326107 | Paychex, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000030128 | 422806208 | HEICO Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000030128 | 760759100 | Republic Services, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000030128 | 172908105 | Cintas Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000030128 | Food Products | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000030128 | Capital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000030128 | Industrial Conglomerates | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000030128 | Life Sciences Tools & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000030128 | Containers & Packaging | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000030128 | Distributors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000030128 | Professional Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000030128 | Machinery | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000030128 | Commercial Services & Supplies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000030128 | Aerospace & Defense | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000030128 | Commercial Support Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000030128 | Specialty Retail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000030128 | Money Market | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000030128 | Trading Companies & Distributors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000030128 | Semiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000030128 | Electronic Equipment, Instruments & Components | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000030128 | Construction Materials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.40% |
| C000030128 | Health Care Equipment & Supplies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000030128 | Insurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000030128 | Building Products | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000030128 | IT Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000164667 | 124805102 | CBIZ, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000164667 | 302081104 | ExlService Holdings, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000164667 | 194693107 | Colliers International Group, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000164667 | 72346Q104 | Pinnacle Financial Partners, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000164667 | 26701L100 | Dutch Bros, Inc. - Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000164667 | 11276H106 | Brookfield Infrastructure Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000164667 | 169905106 | Choice Hotels International, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000164667 | P73684113 | OneSpaWorld Holdings Ltd. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000164667 | 35905A109 | Frontdoor, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000164667 | 33767E202 | FirstService Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000164667 | Food Products | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000164667 | Professional Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000164667 | Machinery | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000164667 | Specialty Retail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000164667 | Money Market | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000164667 | Trading Companies & Distributors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000164667 | Insurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000164667 | IT Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000164667 | Real Estate Owners & Developers | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000164667 | Chemicals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000164667 | Road & Rail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000164667 | Health Care Facilities & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000164667 | Gas Utilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000164667 | Media | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000164667 | Software | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000164667 | Diversified Consumer Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7% |
| C000164667 | Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000164667 | Hotels, Restaurants & Leisure | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000164667 | Real Estate Management & Development | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000110096 | 124805102 | CBIZ, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000110096 | 302081104 | ExlService Holdings, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000110096 | 194693107 | Colliers International Group, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000110096 | 72346Q104 | Pinnacle Financial Partners, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000110096 | 26701L100 | Dutch Bros, Inc. - Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000110096 | 11276H106 | Brookfield Infrastructure Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000110096 | 169905106 | Choice Hotels International, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000110096 | P73684113 | OneSpaWorld Holdings Ltd. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000110096 | 35905A109 | Frontdoor, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000110096 | 33767E202 | FirstService Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000110096 | Food Products | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000110096 | Professional Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000110096 | Machinery | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000110096 | Specialty Retail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000110096 | Money Market | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000110096 | Trading Companies & Distributors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000110096 | Insurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000110096 | IT Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000110096 | Real Estate Owners & Developers | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000110096 | Chemicals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000110096 | Road & Rail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000110096 | Health Care Facilities & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000110096 | Gas Utilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000110096 | Media | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000110096 | Software | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000110096 | Diversified Consumer Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7% |
| C000110096 | Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000110096 | Hotels, Restaurants & Leisure | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000110096 | Real Estate Management & Development | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000164665 | 863667101 | Stryker Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000164665 | 12514G108 | CDW Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000164665 | 778296103 | Ross Stores, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000164665 | 115236101 | Brown & Brown, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000164665 | 570535104 | Markel Group, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000164665 | 11271J107 | Brookfield Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000164665 | 45167R104 | IDEX Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000164665 | 743315103 | Progressive Corporation (The) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000164665 | 032095101 | Amphenol Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000164665 | 929160109 | Vulcan Materials Company | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000164665 | Food Products | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000164665 | Capital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000164665 | Life Sciences Tools & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000164665 | Professional Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000164665 | Machinery | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.80% |
| C000164665 | Specialty Retail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.30% |
| C000164665 | Money Market | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000164665 | Trading Companies & Distributors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000164665 | Semiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000164665 | Electronic Equipment, Instruments & Components | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000164665 | Construction Materials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000164665 | Health Care Equipment & Supplies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000164665 | Insurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000164665 | Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000164665 | Hotels, Restaurants & Leisure | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000164665 | Oil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000164665 | Diversified Financial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000030126 | 863667101 | Stryker Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000030126 | 12514G108 | CDW Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000030126 | 778296103 | Ross Stores, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000030126 | 115236101 | Brown & Brown, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000030126 | 570535104 | Markel Group, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000030126 | 11271J107 | Brookfield Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000030126 | 45167R104 | IDEX Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000030126 | 743315103 | Progressive Corporation (The) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000030126 | 032095101 | Amphenol Corporation, Class A | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000030126 | 929160109 | Vulcan Materials Company | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000030126 | Food Products | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000030126 | Capital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000030126 | Life Sciences Tools & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000030126 | Professional Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000030126 | Machinery | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.80% |
| C000030126 | Specialty Retail | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.30% |
| C000030126 | Money Market | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000030126 | Trading Companies & Distributors | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000030126 | Semiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000030126 | Electronic Equipment, Instruments & Components | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000030126 | Construction Materials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000030126 | Health Care Equipment & Supplies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000030126 | Insurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000030126 | Banks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000030126 | Hotels, Restaurants & Leisure | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000030126 | Oil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000030126 | Diversified Financial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
