Osterweis Strategic Income Fund Investor Class Osterweis Strategic Income Fund Investor Class, C000013345 U.S. Government And Agency Issuer Risk Member U.S. Government And Agency Issuer Risk Member Equity Risk Member Equity Risk Member Osterweis Opportunity Fund S000055531 Osterweis Opportunity Fund C000174818 Investor Class OSTGX Below Investment Grade Securities Risk Member Below Investment Grade Securities Risk Member Emerging Markets Risk Member Emerging Markets Risk Member Convertible Security Risk Member Convertible Security Risk Member Osterweis Strategic Income Fund Osterweis Strategic Income Fund Series, S000004930 Osterweis Opportunity Fund Investor Class S000055531 Osterweis Opportunity Fund C000174818 Investor Class OSTGX S&P 500® Index (reflects no deduction for fees, expenses, or taxes) S&P 500® Index (reflects no deduction for fees, expenses, or taxes) Currency Risk Member Currency Risk Member Sector Emphasis Risk, Health Care Sector Risk Member Sector Emphasis Risk, Health Care Sector Risk Member Debt Securities Risk, Defaulted Securities Risk Member Debt Securities Risk, Defaulted Securities Risk Member Osterweis Fund Osterweis Fund Series, S000004931 Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes) Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes) Portfolio Turnover Risk Member Portfolio Turnover Risk Member Foreign Securities Risk Member Foreign Securities Risk Member Sector Emphasis Risk Member Sector Emphasis Risk Member Master Limited Partnership Risk Member Master Limited Partnership Risk Member 60% S&P 500® Index/40% Bloomberg U.S. Aggregate Bond Index Blend (reflects no deduction for fees, expenses or taxes) 60% S&P 500® Index/40% Bloomberg U.S. Aggregate Bond Index Blend (reflects no deduction for fees, expenses or taxes) Debt Securities Risk, Interest Rate Risk Member Debt Securities Risk, Interest Rate Risk Member Debt Securities Risk, Extension Risk Member Debt Securities Risk, Extension Risk Member Large Company Risk Member Large Company Risk Member IPO Risk Member IPO Risk Member Economic And Market Risk Member Economic And Market Risk Member Debt Securities Risks Member Debt Securities Risks Member Osterweis Fund Investor Class Osterweis Fund Investor Class, C000013346 Management Risk Member Management Risk Member Unseasoned Company Risk Member Unseasoned Company Risk Member Debt Securities Risk, Credit Risk Member Debt Securities Risk, Credit Risk Member Investment Company And Exchange-Traded Fund Risk Member Investment Company And Exchange-Traded Fund Risk Member Liquidity Risk Member Liquidity Risk Member Small And Medium Company Risk Member Small And Medium Company Risk Member Mortgage-Related And Other Asset-Backed Securities Risk Member Mortgage-Related And Other Asset-Backed Securities Risk Member Debt Securities Risk, Prepayment Risk Member Debt Securities Risk, Prepayment Risk Member Osterweis Growth & Income Fund Osterweis Growth & Income Fund Series, S000029833 Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) Osterweis Growth & Income Fund Investor Class Osterweis Growth & Income Fund Investor Class, C000091752