Class Osterweis Fund - C000013346 Osterweis Fund Class Osterweis Growth & Income Fund - C000091752 Osterweis Growth & Income Fund Class Osterweis Opportunity Fund - C000174818 Osterweis Opportunity Fund Class Osterweis Strategic Income Fund - C000013345 Osterweis Strategic Income Fund Broad Based Index:1ClassTF-S&P 500_ S&P 500 [Member] Largest Holding:3ClassTF-Alphabet, Inc. - Class C Alphabet, Inc. - Class C [Member] Largest Holding:4ClassTF-Amazon.com, Inc. Amazon.com, Inc. [Member] Largest Holding:5ClassTF-Microsoft Corp. Microsoft Corp. [Member] Largest Holding:6ClassTF-Broadcom, Inc. Broadcom, Inc. [Member] Largest Holding:7ClassTF-Visa, Inc. - Class A Visa, Inc. - Class A [Member] Largest Holding:8ClassTF-Analog Devices, Inc. Analog Devices, Inc. [Member] Largest Holding:9ClassTF-JPMorgan Chase & Co. JPMorgan Chase & Co. [Member] Largest Holding:10ClassTF-Applied Materials, Inc. Applied Materials, Inc. [Member] Largest Holding:11ClassTF-Waste Connections, Inc. Waste Connections, Inc. [Member] Largest Holding:12ClassTF-AutoZone, Inc. AutoZone, Inc. [Member] Broad Based Index:13ClassTF-S&P 500_ S&P 500 [Member] Additional Index:14ClassTF-Bloomberg US Aggregate Bond Bloomberg US Aggregate Bond [Member] Additional Index:15ClassTF-60% S&P 500/40% Bloomberg US Aggregate Blend 60% S&P 500/40% Bloomberg US Aggregate Blend [Member] Largest Holding:17ClassTF-Alphabet, Inc. - Class C Alphabet, Inc. - Class C [Member] Largest Holding:18ClassTF-Federated Hermes US Treasury Cash Reserves - Class Institutional Federated Hermes US Treasury Cash Reserves - Class Institutional [Member] Largest Holding:19ClassTF-Amazon.com, Inc. Amazon.com, Inc. [Member] Largest Holding:20ClassTF-Microsoft Corp. Microsoft Corp. [Member] Largest Holding:21ClassTF-Broadcom, Inc. Broadcom, Inc. [Member] Largest Holding:22ClassTF-Visa, Inc. - Class A Visa, Inc. - Class A [Member] Largest Holding:23ClassTF-Analog Devices, Inc. Analog Devices, Inc. [Member] Largest Holding:24ClassTF-JPMorgan Chase & Co. JPMorgan Chase & Co. [Member] Largest Holding:25ClassTF-Novartis AG Novartis AG [Member] Largest Holding:26ClassTF-AutoZone, Inc. AutoZone, Inc. [Member] Broad Based Index:27ClassTF-S&P 500_ S&P 500 [Member] Additional Index:28ClassTF-Russell 2000 Growth Russell 2000 Growth [Member] Largest Holding:30ClassTF-Federated Hermes US Treasury Cash Reserves - Class Institutional Federated Hermes US Treasury Cash Reserves - Class Institutional [Member] Largest Holding:31ClassTF-Axos Financial, Inc. Axos Financial, Inc. [Member] Largest Holding:32ClassTF-Life Time Group Holdings, Inc. Life Time Group Holdings, Inc. [Member] Largest Holding:33ClassTF-Guardant Health, Inc. Guardant Health, Inc. [Member] Largest Holding:34ClassTF-CECO Environmental Corp. CECO Environmental Corp. [Member] Largest Holding:35ClassTF-VSE Corp. VSE Corp. [Member] Largest Holding:36ClassTF-Vericel Corp. Vericel Corp. [Member] Largest Holding:37ClassTF-Novanta, Inc. Novanta, Inc. [Member] Largest Holding:38ClassTF-Fabrinet Fabrinet [Member] Largest Holding:39ClassTF-Casella Waste Systems, Inc. - Class A Casella Waste Systems, Inc. - Class A [Member] Broad Based Index:40ClassTF-Bloomberg US Aggregate Bond_ Bloomberg US Aggregate Bond [Member] Largest Holding:42ClassTF-MSILF Treasury Securities Portfolio - Class Institutional MSILF Treasury Securities Portfolio - Class Institutional [Member] Largest Holding:43ClassTF-Federated Hermes US Treasury Cash Reserves - Class Institutional Federated Hermes US Treasury Cash Reserves - Class Institutional [Member] Largest Holding:44ClassTF-First American US Treasury Money Market Fund - Class X First American US Treasury Money Market Fund - Class X [Member] Largest Holding:45ClassTF-Unisys Corp. Unisys Corp. [Member] Largest Holding:46ClassTF-Oxford Finance LLC / Oxford Finance Co.-Issuer II, Inc. Oxford Finance LLC / Oxford Finance Co.-Issuer II, Inc. [Member] Largest Holding:47ClassTF-HAT Holdings I LLC / HAT Holdings II LLC HAT Holdings I LLC / HAT Holdings II LLC [Member] Largest Holding:48ClassTF-Coeur Mining, Inc. Coeur Mining, Inc. [Member] Largest Holding:49ClassTF-KeHE Distributors LLC / KeHE Finance Corp. / NextWave Distribution, Inc. KeHE Distributors LLC / KeHE Finance Corp. / NextWave Distribution, Inc. [Member] Largest Holding:50ClassTF-WESCO Distribution, Inc. WESCO Distribution, Inc. [Member] Largest Holding:51ClassTF-Pitney Bowes, Inc. Pitney Bowes, Inc. [Member] Net Assets Investment Company Portfolio Turnover Portfolio Turnover Commodity Index Linked Notes [Member] Commodity Index Linked Notes Sovereign Debt Securities [Member] Sovereign Debt Securities Convertible Debt Securities [Member] Convertible Debt Securities Corporate Debt Securities [Member] Corporate Debt Securities Corporate Note Securities [Member] Corporate Note Securities Corporate Bond Securities [Member] Corporate Bond Securities Fixed Income Investments [Member] Fixed Income Investments Securities Investment [Member] Securities Investment Other Aggregated Investments [Member] Other Aggregated Investments Real Estate Sector [Member] Real Estate Sector Standard Poors 500 Index [Member] Standard Poors 500 Index Nasdaq Composite Index [Member] Nasdaq Composite Index Equity Securities Industry [Member] Equity Securities Industry Equity Securities [Member] Equity Securities Dow Jones Industrial Average [Member] Dow Jones Industrial Average Construction Sector [Member] Construction Sector Automotive Sector [Member] Automotive Sector Transportation Sector [Member] Transportation Sector Aerospace Sector [Member] Aerospace Sector Consumer Sector [Member] Consumer Sector Chemicals Sector [Member] Chemicals Sector Insurance Sector [Member] Insurance Sector Cash [Member] Cash Asset Backed Securities [Member] Asset Backed Securities Container And PackagingSector [Member] Container And PackagingSector Investment Type [Axis] Asset Class US Treasury Securities [Member] US Treasury Securities Mortgage Backed Securities [Member] Mortgage Backed Securities Investment Type Categorization [Member] Investment Type Categorization Entertainment Sector [Member] Entertainment Sector Food And Beverage Sector [Member] Food And Beverage Sector Financial Services Sector [Member] Financial Services Sector Healthcare Sector [Member] Healthcare Sector Energy Sector [Member] Energy Sector Technology Sector [Member] Technology Sector Government Sector [Member] Government Sector No Trading Symbol