v3.26.1
Average Annual Total Returns
12 Months Ended 60 Months Ended 120 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] S&P 500® Index (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   17.88% 14.42% 14.82%
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   7.30% (0.36%) 2.01%
60% S&P 500® Index/40% Bloomberg U.S. Aggregate Bond Index Blend (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] 60% S&P 500® Index/40% Bloomberg U.S. Aggregate Bond Index Blend (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   13.70% 8.47% 9.78%
Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes)      
Average Annual Return, Percent   13.01% 3.18% 9.57%
Osterweis Fund Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   12.87% 7.90% 10.31%
Osterweis Fund Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   11.35% 5.90% 7.27%
Osterweis Fund Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   8.70% 5.96% 7.44%
Osterweis Strategic Income Fund Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   5.47% 4.89% 5.47%
Osterweis Strategic Income Fund Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   3.23% 2.82% 3.43%
Osterweis Strategic Income Fund Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   3.23% 2.85% 3.32%
Osterweis Growth & Income Fund Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   10.63% 7.03% 8.77%
Osterweis Growth & Income Fund Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   9.41% 5.11% 7.01%
Osterweis Growth & Income Fund Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   6.62% 5.01% 6.53%
Osterweis Opportunity Fund Investor Class        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   0.27% 1.18% 13.38%
Osterweis Opportunity Fund Investor Class | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions      
Average Annual Return, Percent   (0.26%) (0.17%) 11.20%
Osterweis Opportunity Fund Investor Class | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares      
Average Annual Return, Percent   0.55% 0.57% 10.26%