v3.26.1
Average Annual Total Returns - Pinnacle Value Fund
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2024
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, 2025
Dec. 31, 2025
Prospectus [Line Items]                        
Average Annual Return, Percent 6.00%                   11.20% 7.20%
After Taxes on Distributions                        
Prospectus [Line Items]                        
Average Annual Return, Percent [1] 3.50%                   8.60% 5.50%
After Taxes on Distributions and Sales                        
Prospectus [Line Items]                        
Average Annual Return, Percent [1] 4.80%                   8.30% 5.30%
Russell 2000 Index                        
Prospectus [Line Items]                        
Average Annual Return, Percent [2] 12.80%                   6.10% 9.60%
Pinnacle Value Fund                        
Prospectus [Line Items]                        
Average Annual Return, Percent 6.00% 10.70% 25.40% 1.10% 14.30% 3.40% 10.70% (11.80%) (0.10%) 16.50%    
[1] After tax returns are calculated using the highest individual federal income tax rates in effect and do not reflect state & local taxes. Your actual after tax returns depends on your individual tax status and may differ from the results shown above. After tax returns are not relevant to investors who hold Fund shares in tax deferred accounts like IRAs.
[2] Although you cannot invest directly in an index, investments in ETFs or funds that attempt to mirror an index performance may incur fees and taxes that may cause investment performance to differ from the performance of the underlying index.