v3.26.1
Expense Example
Apr. 29, 2026
USD ($)
FPA Crescent Fund - Institutional and Investor Class Shares | FPA Crescent Fund | Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 107
Expense Example, with Redemption, 3 Years 338
Expense Example, with Redemption, 5 Years 593
Expense Example, with Redemption, 10 Years 1,321
FPA Crescent Fund - Institutional and Investor Class Shares | FPA Crescent Fund | Investor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 117
Expense Example, with Redemption, 3 Years 380
Expense Example, with Redemption, 5 Years 677
Expense Example, with Redemption, 10 Years 1,522
FPA Crescent Fund - Supra Institutional Class Shares | FPA Crescent Fund | Supra Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 322
Expense Example, with Redemption, 5 Years 567
Expense Example, with Redemption, 10 Years 1,271
FPA Flexible Fixed Income Fund - Institutional, Advisor and Investor Class | FPA Flexible Fixed Income Fund | Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 57
Expense Example, with Redemption, 3 Years 194
Expense Example, with Redemption, 5 Years 344
Expense Example, with Redemption, 10 Years 779
FPA Flexible Fixed Income Fund - Institutional, Advisor and Investor Class | FPA Flexible Fixed Income Fund | Advisor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 62
Expense Example, with Redemption, 3 Years 203
Expense Example, with Redemption, 5 Years 358
Expense Example, with Redemption, 10 Years 806
FPA Flexible Fixed Income Fund - Institutional, Advisor and Investor Class | FPA Flexible Fixed Income Fund | Investor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 67
Expense Example, with Redemption, 3 Years 243
Expense Example, with Redemption, 5 Years 434
Expense Example, with Redemption, 10 Years $ 987