Investment Strategy	Jun. 30, 2026
Osterweis Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Fund invests primarily in common stocks of quality growth companies that Osterweis Capital Management, Inc. (the “Adviser”) believes offer superior investment value and opportunity for growth. The Fund may invest in companies of any size – large, medium and small. The Adviser focuses on quality growth companies that it believes to be undervalued or otherwise out-of-favor in the market, but that have durable competitive advantages. The team focuses on a select group of companies that it believes have such advantages, attractive growth prospects, and strong management teams. As such companies achieve greater visibility over time and their stocks are accorded valuations more in line with their growth rates, the Adviser may choose to sell those stocks. Other types of equity securities in which the Fund may invest include convertible securities and publicly traded Master Limited Partnerships (“MLPs”). MLPs are generally energy or natural resource-related companies and may comprise up to 15% of the Fund’s assets. The Fund may also invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including those in emerging markets. The Fund's investments in any one sector may exceed 25% of its net assets. In addition to taking temporary defensive positions in cash and short-term bonds from time to time, the Fund may invest up to 50% of its assets in fixed income securities, which include, but are not limited to, U.S. government and agency debt, investment grade corporate debt and convertible debt. Up to 40% of the Fund’s assets may be invested in below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), although the Fund does not expect to maintain significant positions in such securities on a normal basis.
Strategy Portfolio Concentration [Text]	The Fund may also invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including those in emerging markets. The Fund's investments in any one sector may exceed 25% of its net assets. In addition to taking temporary defensive positions in cash and short-term bonds from time to time, the Fund may invest up to 50% of its assets in fixed income securities, which include, but are not limited to, U.S. government and agency debt, investment grade corporate debt and convertible debt. Up to 40% of the Fund’s assets may be invested in below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), although the Fund does not expect to maintain significant positions in such securities on a normal basis.
Osterweis Strategic Income Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Fund invests primarily in income bearing securities. Osterweis Capital Management, LLC (the “Adviser”) takes a strategic approach and may invest in a wide array of fixed income securities of various credit qualities (e.g., investment grade or below investment grade) and maturities (e.g., long term, intermediate or short term). The Adviser seeks to control risk through rigorous credit analysis, economic analysis, interest rate forecasts and sector trend review, and is not constrained by any particular duration or credit quality targets. The Fund’s fixed income investments may include, but are not limited to, U.S. Federal and Agency obligations, investment grade corporate debt, below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), floating-rate debt, convertible debt, collateralized debt, foreign debt and/or depositary receipts, commercial paper and preferred stock. The Fund may invest up to 100% of its net assets in dividend-paying equities of companies of any size – large, medium and small. Additionally, the Fund may also invest up to 100% of its assets in foreign debt and/or depositary receipts. The Fund’s investments in any one sector may exceed 25% of its net assets. The Fund’s allocation among various fixed income securities is based on the portfolio managers’ assessment of opportunities for total return relative to the risk of each type of investment. The Adviser may sell a security when it believes doing so is appropriate and consistent with the Fund’s investment objectives and policies or when conditions affecting relevant markets, particular industries or individual issues warrant such action, regardless of the effect on the Fund’s portfolio turnover rate.
Strategy Portfolio Concentration [Text]	The Fund may invest up to 100% of its net assets in dividend-paying equities of companies of any size – large, medium and small. Additionally, the Fund may also invest up to 100% of its assets in foreign debt and/or depositary receipts. The Fund’s investments in any one sector may exceed 25% of its net assets.
Osterweis Growth & Income Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Fund invests in both equity and fixed income securities that Osterweis Capital Management, LLC (the “Adviser”) believes can deliver attractive long-term returns and enhanced capital preservation. The Fund also focuses on generating consistent and growing income over time in addition to capital appreciation. The Fund’s investments in any one sector may exceed 25% of its net assets. In executing the strategy, the advisors seek to deliver returns through both income and growth. Equity Investments In selecting equity investments, the Adviser focuses on the common stocks of quality growth companies that it believes offer superior investment value and opportunity for total returns. The Adviser focuses on the securities of quality growth companies that it believes to be undervalued or otherwise out-of-favor in the market but that have durable competitive advantages. As such companies achieve greater visibility over time and their stocks are accorded valuations more in line with the growth rates, the Adviser may choose to sell those stocks. The Fund may invest in equity securities of companies of all market capitalization sizes – large, medium and small. In addition to common stock, the Fund may also invest in preferred stock, convertible securities and up to 15% of its assets in publicly traded Master Limited Partnerships (“MLPs”) that are generally energy or natural resource related companies. Fixed Income Investments In selecting fixed income investments, the Adviser takes a strategic approach and may invest in a wide array of fixed income securities of various credit qualities and maturities. The Adviser seeks to control risk through rigorous credit analysis, economic analysis, interest rate forecasts and sector trend review, and is not constrained by any particular duration or credit quality targets. The Fund’s fixed income investments may include, but are not limited to, U.S. Federal and Agency obligations, investment grade corporate debt, below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), floating-rate debt, convertible debt, mortgage-backed securities (including privately issued mortgage backed securities), asset-backed securities, collateralized debt, foreign debt and/or depositary receipts, commercial paper and preferred stock. The Fund’s allocation among various fixed income securities is based on the portfolio managers’ assessment of opportunities for total return relative to the risk of each type of investment, but generally there is no limit on any type of fixed income security, meaning that the Fund could have up to 75% of its net assets invested in below investment grade securities, for instance. Un-rated securities may be deemed investment grade, particularly in the case of government agency securities. The Fund may at times be invested in fixed income securities of varying maturities (e.g., long-term, intermediate or short-term) and credit qualities (e.g., investment grade or below investment grade), while at other times the Fund may emphasize one particular maturity or credit quality. The Adviser will sell a security when it believes doing so is appropriate and consistent with the Fund’s investment objectives and policies or when conditions affecting relevant markets, particular industries or individual issues warrant such action. Allocation of Investments The allocation of assets between equity and fixed income securities is a function of the relative opportunity set based on earnings growth, dividend yields, valuations, and fixed income yields. The allocation is reviewed on an ongoing basis and adjustments are made as needed based on the Adviser’s assessment of the risk/reward profiles of individual securities and broad macro risk factors. Under normal market conditions, the minimum allocation to either fixed income (including cash) or equity securities is expected to be 25% of the Fund’s net assets; conversely, the maximum allocation to either fixed income (including cash) or equity securities at any given time is expected to be 75%. The Fund may invest up to 50% of its net assets in foreign securities (in developed and in emerging markets), including depositary receipts traded on foreign exchanges. The Fund may also invest, without limitation, in depositary receipts that are traded on domestic exchanges and that evidence ownership of foreign equity securities. The Fund’s investments in any one sector may exceed 25% of its net assets.
Strategy Portfolio Concentration [Text]	Under normal market conditions, the minimum allocation to either fixed income (including cash) or equity securities is expected to be 25% of the Fund’s net assets; conversely, the maximum allocation to either fixed income (including cash) or equity securities at any given time is expected to be 75%. The Fund may invest up to 50% of its net assets in foreign securities (in developed and in emerging markets), including depositary receipts traded on foreign exchanges. The Fund may also invest, without limitation, in depositary receipts that are traded on domestic exchanges and that evidence ownership of foreign equity securities. The Fund’s investments in any one sector may exceed 25% of its net assets.
Osterweis Opportunity Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Fund invests primarily in the common stocks of companies that the Adviser believes should experience strong revenue growth and rising profits. Although the Fund may invest in companies of any size, it will generally focus its investments in small-capitalization companies and mid-capitalization companies. The Adviser seeks to identify quality companies with investment potential, which is generally equated with the ability to generate revenue growth over time. Target companies typically possess one or more of the following characteristics: a distinct competitive advantage; a leading position in the industry; the potential for margin expansion; and/or the presence of a strong management team. Some of the companies in which the Fund may invest may have limited operational or earnings history or may have limited products, markets, financial resources or management depth. The Fund may invest in initial public offerings (IPOs). In seeking to achieve the Fund’s investment objective, the Adviser may engage in active or frequent trading. The Fund may also invest in other investment companies, including exchange-traded funds (“ETFs”) for the purpose of gaining exposure to certain markets while maintaining liquidity. The Fund may invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including in securities issued by companies domiciled in emerging market countries. The Fund’s investments in any one sector may exceed 25% of its net assets. As of March 31, 2026, over 25% of the Fund’s assets were invested in securities within the health care sector. The Fund may sell a position if the Adviser believes it is overvalued, fundamentals erode or another more attractive investment is identified.
Strategy Portfolio Concentration [Text]	The Fund may invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including in securities issued by companies domiciled in emerging market countries. The Fund’s investments in any one sector may exceed 25% of its net assets. As of March 31, 2026, over 25% of the Fund’s assets were invested in securities within the health care sector.

Investment Strategy

Jun. 30, 2026

Principal Investment Strategies

The Fund invests primarily in common stocks of quality growth companies that Osterweis Capital Management, Inc. (the “Adviser”) believes offer superior investment value and opportunity for growth. The Fund may invest in companies of any size – large, medium and small. The Adviser focuses on quality growth companies that it believes to be undervalued or otherwise out-of-favor in the market, but that have durable competitive advantages. The team focuses on a select group of companies that it believes have such advantages, attractive growth prospects, and strong management teams. As such companies achieve greater visibility over time and their stocks are accorded valuations more in line with their growth rates, the Adviser may choose to sell those stocks.

Other types of equity securities in which the Fund may invest include convertible securities and publicly traded Master Limited Partnerships (“MLPs”). MLPs are generally energy or natural resource-related companies and may comprise up to 15% of the Fund’s assets. The Fund may also invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including those in emerging markets. The Fund's investments in any one sector may exceed 25% of its net assets.

In addition to taking temporary defensive positions in cash and short-term bonds from time to time, the Fund may invest up to 50% of its assets in fixed income securities, which include, but are not limited to, U.S. government and agency debt, investment grade corporate debt and convertible debt. Up to 40% of the Fund’s assets may be invested in below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), although the Fund does not expect to maintain significant positions in such securities on a normal basis.

Strategy Portfolio Concentration [Text]

The Fund may also invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including those in emerging markets. The Fund's investments in any one sector may exceed 25% of its net assets. In addition to taking temporary defensive positions in cash and short-term bonds from time to time, the Fund may invest up to 50% of its assets in fixed income securities, which include, but are not limited to, U.S. government and agency debt, investment grade corporate debt and convertible debt. Up to 40% of the Fund’s assets may be invested in below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), although the Fund does not expect to maintain significant positions in such securities on a normal basis.

Osterweis Strategic Income Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

The Fund invests primarily in income bearing securities. Osterweis Capital Management, LLC (the “Adviser”) takes a strategic approach and may invest in a wide array of fixed income securities of various credit qualities (e.g., investment grade or below investment grade) and maturities (e.g., long term, intermediate or short term). The Adviser seeks to control risk through rigorous credit analysis, economic analysis, interest rate forecasts and sector trend review, and is not constrained by any particular duration or credit quality targets. The Fund’s fixed income investments may include, but are not limited to, U.S. Federal and Agency obligations, investment grade corporate debt, below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), floating-rate debt, convertible debt, collateralized debt, foreign debt and/or depositary receipts, commercial paper and preferred stock. The Fund may invest up to 100% of its net assets in dividend-paying equities of companies of any size – large, medium and small. Additionally, the Fund may also invest up to 100% of its assets in foreign debt and/or depositary receipts. The Fund’s investments in any one sector may exceed 25% of its net assets. The Fund’s allocation among various fixed income securities is based on the portfolio managers’ assessment of opportunities for total return relative to the risk of each type of investment.

The Adviser may sell a security when it believes doing so is appropriate and consistent with the Fund’s investment objectives and policies or when conditions affecting relevant markets, particular industries or individual issues warrant such action, regardless of the effect on the Fund’s portfolio turnover rate.

Strategy Portfolio Concentration [Text]

The Fund may invest up to 100% of its net assets in dividend-paying equities of companies of any size – large, medium and small. Additionally, the Fund may also invest up to 100% of its assets in foreign debt and/or depositary receipts. The Fund’s investments in any one sector may exceed 25% of its net assets.

Osterweis Growth & Income Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

The Fund invests in both equity and fixed income securities that Osterweis Capital Management, LLC (the “Adviser”) believes can deliver attractive long-term returns and enhanced capital preservation. The Fund also focuses on generating consistent and growing income over time in addition to capital appreciation. The Fund’s investments in any one sector may exceed 25% of its net assets. In executing the strategy, the advisors seek to deliver returns through both income and growth.

Equity Investments

In selecting equity investments, the Adviser focuses on the common stocks of quality growth companies that it believes offer superior investment value and opportunity for total returns. The Adviser focuses on the securities of quality growth companies that it believes to be undervalued or otherwise out-of-favor in the market but that have durable competitive advantages. As such companies achieve greater visibility over time and their stocks are accorded valuations more in line with the growth rates, the Adviser may choose to sell those stocks. The Fund may invest in equity securities of companies of all market capitalization sizes – large, medium and small. In addition to common stock, the Fund may also invest in preferred stock, convertible securities and up to 15% of its assets in publicly traded Master Limited Partnerships (“MLPs”) that are generally energy or natural resource related companies.

Fixed Income Investments

In selecting fixed income investments, the Adviser takes a strategic approach and may invest in a wide array of fixed income securities of various credit qualities and maturities. The Adviser seeks to control risk through rigorous credit analysis, economic analysis, interest rate forecasts and sector trend review, and is not constrained by any particular duration or credit quality targets. The Fund’s fixed income investments may include, but are not limited to, U.S. Federal and Agency obligations, investment grade corporate debt, below investment grade corporate debt (higher-risk, lower-rated fixed income securities such as those rated lower than BBB- by S&P or lower than Baa3 by Moody’s), floating-rate debt, convertible debt, mortgage-backed securities (including privately issued mortgage backed securities), asset-backed securities, collateralized debt, foreign debt and/or depositary receipts, commercial paper and preferred stock. The Fund’s allocation among various fixed income securities is based on the portfolio managers’ assessment of opportunities for total return relative to the risk of each type of investment, but generally there is no limit on any type of fixed income security, meaning that the Fund could have up to 75% of its net assets invested in below investment grade securities, for instance. Un-rated securities may be deemed investment grade, particularly in the case of government agency securities. The Fund may at times be invested in fixed income securities of varying maturities (e.g., long-term, intermediate or short-term) and credit qualities (e.g., investment grade or below investment grade), while at other times the Fund may emphasize one particular maturity or credit quality.

The Adviser will sell a security when it believes doing so is appropriate and consistent with the Fund’s investment objectives and policies or when conditions affecting relevant markets, particular industries or individual issues warrant such action.

Allocation of Investments

The allocation of assets between equity and fixed income securities is a function of the relative opportunity set based on earnings growth, dividend yields, valuations, and fixed income yields. The allocation is reviewed on an ongoing basis and adjustments are made as needed based on the Adviser’s assessment of the risk/reward profiles of individual securities and broad macro risk factors. Under normal market conditions, the minimum allocation to either fixed income (including cash) or equity securities is expected to be 25% of the Fund’s net assets; conversely, the maximum allocation to either fixed income (including cash) or equity securities at any given time is expected to be 75%.

The Fund may invest up to 50% of its net assets in foreign securities (in developed and in emerging markets), including depositary receipts traded on foreign exchanges. The Fund may also invest, without

limitation, in depositary receipts that are traded on domestic exchanges and that evidence ownership of foreign equity securities. The Fund’s investments in any one sector may exceed 25% of its net assets.

Strategy Portfolio Concentration [Text]

Under normal market conditions, the minimum allocation to either fixed income (including cash) or equity securities is expected to be 25% of the Fund’s net assets; conversely, the maximum allocation to either fixed income (including cash) or equity securities at any given time is expected to be 75%. The Fund may invest up to 50% of its net assets in foreign securities (in developed and in emerging markets), including depositary receipts traded on foreign exchanges. The Fund may also invest, without limitation, in depositary receipts that are traded on domestic exchanges and that evidence ownership of foreign equity securities. The Fund’s investments in any one sector may exceed 25% of its net assets.

Osterweis Opportunity Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

The Fund invests primarily in the common stocks of companies that the Adviser believes should experience strong revenue growth and rising profits. Although the Fund may invest in companies of any size, it will generally focus its investments in small-capitalization companies and mid-capitalization companies. The Adviser seeks to identify quality companies with investment potential, which is generally equated with the ability to generate revenue growth over time. Target companies typically possess one or more of the following characteristics: a distinct competitive advantage; a leading position in the industry; the potential for margin expansion; and/or the presence of a strong management team. Some of the companies in which the Fund may invest may have limited operational or earnings history or may have limited products, markets, financial resources or management depth. The Fund may invest in initial public offerings (IPOs). In seeking to achieve the Fund’s investment objective, the Adviser may engage in active or frequent trading.

The Fund may also invest in other investment companies, including exchange-traded funds (“ETFs”) for the purpose of gaining exposure to certain markets while maintaining liquidity. The Fund may invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including in securities issued by companies domiciled in emerging market countries.

The Fund’s investments in any one sector may exceed 25% of its net assets. As of March 31, 2026, over 25% of the Fund’s assets were invested in securities within the health care sector.

The Fund may sell a position if the Adviser believes it is overvalued, fundamentals erode or another more attractive investment is identified.

Strategy Portfolio Concentration [Text]

The Fund may invest up to 30% of its assets in equity securities of foreign issuers and/or depositary receipts that are traded on domestic or foreign exchanges, including in securities issued by companies domiciled in emerging market countries. The Fund’s investments in any one sector may exceed 25% of its net assets. As of March 31, 2026, over 25% of the Fund’s assets were invested in securities within the health care sector.