v3.26.3
Average Annual Total Returns
 12 Months Ended 60 Months Ended 61 Months Ended 120 Months Ended
Sep. 28, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Investor Class          
Prospectus [Line Items]          
Average Annual Return, Percent 13.36% 10.26%   9.88%
Investor Class | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent [1] 12.23% 9.47%   8.93%
Investor Class | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent [1] 8.74% 8.06%   7.86%
Advisor Class          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   13.31% 10.30% 11.81%
Performance Inception Date [2] Dec. 01, 2020        
Institutional Class          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   13.49% 10.43% 11.94%
Performance Inception Date [2] Dec. 01, 2020        
FPA Queens Road Value Fund          
Prospectus [Line Items]          
Average Annual Return, Percent   6.05% 11.26%   11.39%
FPA Queens Road Value Fund | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent [3]   5.36% 9.84%   10.02%
FPA Queens Road Value Fund | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent [3]   4.08% 8.72%   9.07%
Russell 3000 Index          
Prospectus [Line Items]          
Average Annual Return, Percent   17.15% 13.15% 10.53% 14.29%
Russell 2000 Value Index          
Prospectus [Line Items]          
Average Annual Return, Percent   12.59% 8.88% 8.37% 9.27%
S&P 500 Index          
Prospectus [Line Items]          
Average Annual Return, Percent   17.88% 14.42%   14.82%
S&P 500 Value Index          
Prospectus [Line Items]          
Average Annual Return, Percent   13.19% 12.96%   11.73%
[1] After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary. After-tax returns are calculated using the highest historical individual federal marginal income tax rate and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and may differ from those shown. The after-tax returns are not relevant if you hold your Fund shares in tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRA”).
[2] Advisor Class and Institutional Class shares commenced operations on December 1, 2020.
[3] After-tax returns are calculated using the highest historical individual federal marginal income tax rate and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and may differ from those shown. The after-tax returns are not relevant if you hold your Fund shares in tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRA”).