Performance Management - Beck, Mack & Oliver Partners Fund |
Aug. 01, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Performance Information |
| Performance Narrative [Text Block] | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund from year to year and by showing how the Fund’s average annual returns compare with those of a broad measure of market performance. Updated performance information is available on a quarterly basis at www.beckmack.com or by calling (800) 943-6786 (toll free). Performance information represents only past performance and does not necessarily indicate future results. |
| Performance Past Does Not Indicate Future [Text] | Performance information represents only past performance and does not necessarily indicate future results. |
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund from year to year and by showing how the Fund’s average annual returns compare with those of a broad measure of market performance. |
| Bar Chart [Heading] | Annual Returns as of December 31 |
| Bar Chart Closing [Text Block] | The calendar year-to-date total return as of June 30, 2025 was -0.41%.
During the period shown, the highest return of a quarter was 25.03% for the quarter ended June 30, 2020, and the lowest return was -29.02% for the quarter ended March 31, 2020. |
| Performance Table Heading | Average Annual Total Returns (For the periods ended December 31, 2024) |
| Performance Table Uses Highest Federal Rate | After-tax returns 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 | After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | S&P 500® Index is a broad-based, unmanaged measure of changes in stock market conditions based on the average performance of stocks of 500 large U.S. companies.
After-tax returns 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 an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts. |
| Performance Availability Website Address [Text] | www.beckmack.com |
| Performance Availability Phone [Text] | (800) 943-6786 |
| Beck, Mack & Oliver Partners Fund Shares | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | year-to-date total return |
| Bar Chart, Year to Date Return | (0.41%) |
| Bar Chart, Year to Date Return, Date | Jun. 30, 2025 |
| Highest Quarterly Return, Label [Optional Text] | highest return |
| Highest Quarterly Return | 25.03% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | lowest return |
| Lowest Quarterly Return | (29.02%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |