v3.26.1
Annual Total Returns
12 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
FPA Crescent Fund - Institutional and Investor Class Shares | Institutional Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 17.65% 13.96% 20.27% (9.20%) 15.17% 12.11% 20.02% (7.43%) 10.39% 10.25%
FPA Crescent Fund - Supra Institutional Class Shares | Supra Institutional Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 17.68% 14.06% 20.33% (9.14%) 15.24%          
FPA Flexible Fixed Income Fund - Institutional, Advisor and Investor Class | Institutional Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 7.23% 5.29% 9.02% (2.82%) 1.77% 4.70% 3.78%