This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the International Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

January 31, 2025

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The International Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when International Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the above example, affect the International Fund’s performance. During the most recent fiscal year ended September 30, 2023, the International Fund’s portfolio turnover rate was 31% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

31.00%

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the International Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the International Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the International Fund’s operating expenses remain the same (taking into account the contractual Expense Cap for the first year only).

Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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Boston Common Asset Management, LLC (“Boston Common” or the “Adviser”) seeks to preserve and build capital over the long-term through investing in a diversified portfolio of common stocks, American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”) of companies we believe are high quality (lower debt/total capital, earnings stability and stable cash flow), sustainable and undervalued. We seek companies with sound governance and histories of responsible financial management that we believe are capable of consistent, visible profitability over a long time horizon. We look for indicators of quality in firms if they are experiencing superior growth and operating successfully in their respective economic sectors. We measure a firm’s growth by comparing its products or services or improving competitive conditions among its peers. We then determine whether any of the individual firms appear to be trading at discounts to their intrinsic value. Here our research-driven conviction is enhanced by our 360-degree perspective where we integrate financial and environmental, social, and governance (“ESG”) criteria into the stock selection process. We believe markets typically misvalue the risks and opportunities presented by ESG issues, both in terms of the timing and the magnitude of outcomes. We believe shareowner engagement plays a critically important role in raising the sustainability profile of our portfolios and empowers company management to be long-term in its focus.

Boston Common’s ESG research process integrates information from disparate sources to form a holistic understanding of corporate performance. The Adviser reviews company filings, trade journals, and industry reports to understand a company’s products and activities, and place it in context with its peers. We search business and news databases covering over 11,000 publications to capture events and analyses related to corporate practices. Boston Common references additional databases that document defense contracts, legal proceedings, and environmental violations, plus we subscribe to specialized ESG data services. The portfolio managers communicate regularly with trade unions, nongovernmental organizations, activist groups, and government agencies about corporate behavior on the ground and in the far reaches of the world. Boston Common queries corporate management through meetings, letter campaigns, emails, and phone calls about areas of particular concern. Drawing on this mosaic of sources, our analysts distill conclusions about a company’s overall profile across the full set of ESG issue areas. We may incorporate information from one or more third party ESG research providers, news sources, non-governmental organizations, and company and industry contacts. The Fund’s primary third party ESG research providers are MSCI ESG Ratings, MSCI ESG Metrics, MSCI ESG BISR Individual Screens, MSCI ESG Controversies, MSCI ESG BISR Global Sanctions, MSCI ESG Climate Change Metrics, ISS Climate Impact Reporting, Vigeo-Eiris, and Lexis-Nexis. We endeavor to integrate financial and sustainability factors into our investment process because we believe ESG research helps us identify companies that will be successful over the long-term. We evaluate companies on (E)nvironmental issues, looking for organizations that demonstrate a higher level of environmental responsibility than their peers and understand that natural resources are limited. We favor companies that conserve natural resources, reduce volume and toxicity of waste generated, and manage direct and indirect greenhouse gas emissions. We assess a company’s commitment to (S)ocial standards including human rights, animal welfare, workplace health and safety, and fair treatment of employees globally. We appraise companies’ adherence to best practices in (G)overnance, including policies favoring transparency and accountability to shareholders, and a commitment to diversity. As a result, we believe ESG research helps improve portfolio quality and financial return potential.

Boston Common’s principal belief is that companies with better ESG performance tend to serve as better long-term investments. Boston Common does not prioritize ESG impacts over returns and will not purchase a security for ESG purposes that has not met our financial criteria as it relates to an attractive balance of fundamentals and valuations.

The Fund’s ESG issue areas, which affect people and the planet include, but are not limited to, the following: environment, energy, human rights and employment, community, product purity and safety, governance, and labor and employment.

Boston Common selects stocks through bottom-up, fundamental research, while maintaining a disciplined approach to valuation and risk control. We may sell a security when its price reaches a set target if we believe that other investments are more attractive, or for other reasons we may determine.

Boston Common excludes securities of companies that: (1) receive significant revenues (>5%) or have leading market share in production and marketing of tobacco products, including components; (2) receive significant revenues (>5%) or have leading market share in production and marketing of alcoholic beverages, including components; (3) receive significant revenues (>5%) or have leading market share from gambling devices or activities including lotteries and hotels with casinos; (4) operate or have direct equity ownership of nuclear power plants, mine or process uranium for fuel supply crucial components of nuclear power reactors (zero tolerance); (5) receive significant revenues (>10%) from nuclear power plant design, construction, maintenance or parts; (6) demonstrate a history and pattern of marketing unsafe products, asserting false marketing claims, or engaging in irresponsible marketing; (7) engage in irresponsible animal testing or widespread abuses of animals, such as in entertainment and factory

farming; (8) receive significant revenues (>5%) from the production of firearms or military weapons systems, including key components; (9) produce or manufacture biological, chemical, or nuclear weapons, anti-personnel landmines, or cluster munitions (zero tolerance); and (10) rank in the top 50 global defense contractors for weapons.

We use our voice as a shareowner to raise environmental, social, and governance issues with the management of select portfolio companies through a variety of channels. These may include engaging in dialogue with management, participating in shareholder proposal filings, voting proxies in accordance with our proxy voting guidelines, and participating in the annual shareholder meeting process. Through this effort, we seek to encourage a company’s management toward greater transparency, accountability, disclosure and commitment to ESG issues. In order to prioritize the Adviser’s focus and impact, Boston Common has established a three-year engagement framework with two to three key initiatives across our three sustainability pillars -environmental, social and governance. Boston Common continues to review these initiatives on an annual basis and track engagement impact through our reporting.

Boston Common reviews ESG-related impacts by actively encouraging shareholders to participate in proxy voting. Boston Common reviews its custom proxy voting policy prior to the proxy season to ensure the Adviser’s custom voting policy captures the desired corporate engagements’ expectations. Boston Common reviews the proxy voting results with its proxy vendor's custom policy team at the end of the proxy season to ensure the expected outcomes were achieved.

Additionally, Boston Common measures and monitors its ESG engagement related impact by compiling the results of its direct dialogue with various portfolio holdings and the shareholder proposals initiated by Boston Common. In addition, Boston Common participates in both dialogue and shareholder proposals initiated by various industry-led coalition groups.

The International Fund will normally invest at least 80% of its net assets, plus borrowings for investment purposes, in the securities of non‑U.S. companies that meet the Adviser’s ESG criteria. The International Fund may invest in preferred stocks as well as in securities that are convertible into common stocks. The International Fund may also invest in ADRs, EDRs, and GDRs. Up to 10% of the International Fund’s total assets may be invested in securities of companies located in emerging markets. The International Fund generally seeks to invest in companies that have market capitalizations of $2 billion or greater.

Strategy Portfolio Concentration [Text]

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Risk [Heading]

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Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the International Fund. The bar chart below illustrates how the International Fund’s total returns have varied from year‑to‑year. The table below illustrates how the International Fund’s average annual total returns for the 1-year, 5-year, 10-year and since-inception periods compare with that of a broad-based securities index. This comparison is provided to offer a broader market perspective. The International Fund’s past performance, before and after taxes, is not necessarily an indication of how the International Fund will perform in the future and does not guarantee future results. Updated performance information is available on the International Fund’s website at www.bostoncommonfunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the International Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.bostoncommonfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The International Fund’s past performance, before and after taxes, is not necessarily an indication of how the International Fund will perform in the future and does not guarantee future results.

Bar Chart [Heading]

rr_BarChartHeading

Calendar Year Total Return As of December 31,

Bar Chart Closing [Text Block]

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Highest Quarterly Return:	Q2, 2020	18.15	%

Lowest Quarterly Return:	Q1, 2020	-19.34	%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.15%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(19.34%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Return as of December 31, 2023

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and does not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Furthermore, the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (“IRAs”).

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In certain cases, Return After Taxes on Distribution and Sale of Fund Shares may be higher than the other return figures for the same period. This will occur when a capital loss is realized upon the sale of International Fund shares or provides an assumed tax benefit that increases the return. Your actual after-tax returns depend on your tax situation and may differ from these shown.

Performance Table Closing [Text Block]

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After-tax returns are calculated using the historical highest individual federal marginal income tax rates and does not reflect the impact of state and local taxes. Actual after-tax returns depend on the individual investor’s situation and may differ from those shown. Furthermore, the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (“IRAs”).

Boston Common ESG Impact International Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk Narrative [Text Block]

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There is the risk that you could lose all or a portion of your investment in the International Fund.

Boston Common ESG Impact International Fund | ESG Policy Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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ESG Policy Risk: The International Fund’s ESG policy could cause the International Fund to perform differently compared to similar funds that do not have such a policy. This ESG policy may result in the International Fund foregoing opportunities to buy certain securities when it might otherwise be advantageous to do so, or selling securities for ESG reasons when it might be otherwise disadvantageous for it to do so. The International Fund will vote proxies in a manner which is consistent with its ESG criteria, which may not always be consistent with maximizing short-term performance of the issuer.

Boston Common ESG Impact International Fund | Foreign Securities Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Foreign Securities Risk: Foreign securities are typically subject to increased risks as compared to U.S. securities, and include risks associated with: (1) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the United States or some foreign countries may be subject to trading restrictions; (2) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the United States; (3) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards as U.S. issuers, (4) greater volatility; and (5) currency fluctuations.

Boston Common ESG Impact International Fund | Risk Of Focusing Investment On Region Or Country Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Risk of Focusing Investment on Region or Country: Investing a significant portion of assets in one country or region makes the International Fund more dependent upon the political and economic circumstances of that particular country or region.

◦Eurozone Investment Risk - The Economic and Monetary Union of the European Union (EMU) is comprised of the European Union (EU) members that have adopted the euro currency. By adopting the euro as its currency, a member state relinquishes control of its own monetary policies and is subject to fiscal and monetary controls. EMU members could voluntarily abandon or be forced out of the euro. Such events could impact the market values of Eurozone and various other securities and currencies, cause redenomination of certain securities into less valuable local currencies and create more volatile and illiquid markets. Certain countries and regions in the EU are experiencing significant financial difficulties. Some of these countries may be dependent on assistance from other European governments and institutions or agencies. One or more countries could depart from the EU, which could weaken the EU and, by extension, its remaining members. For example, the United Kingdom’s departure, described in more detail below.

◦United Kingdom Investment Risk. The United Kingdom has one of the largest economies in Europe and is heavily dependent on trade with the European Union (“EU”) and the United States. As a result, the economy of the United Kingdom may be impacted by changes to the economic health of EU member counties and the United States. In 2020, the United Kingdom left the EU (referred to as “Brexit”). The United Kingdom and the EU reached a trade agreement that was ratified by all applicable United Kingdom and EU governmental bodies. The economic effects of Brexit, including certain negative impacts on the ability of the United Kingdom to trade seamlessly with the EU, are becoming clearer but some political, regulatory and commercial uncertainty in relation to the longer term impacts nevertheless remains to be resolved. Accordingly, there remains a risk that the aftermath of Brexit, including its ongoing effect on the United Kingdom’s relationships with other countries and with the EU, may negatively impact the value of investments held by the Fund. Additionally, increasing commodity prices and rising inflation levels prompted the United Kingdom government to implement significant policy changes. It is difficult to predict what effects such policies (or the suggestion of such policies) may have and the duration of those effects, which may last for extended periods.

Boston Common ESG Impact International Fund | Risk Of Focusing Investment On Region Or Country, Eurozone Investment Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Eurozone Investment Risk - The Economic and Monetary Union of the European Union (EMU) is comprised of the European Union (EU) members that have adopted the euro currency. By adopting the euro as its currency, a member state relinquishes control of its own monetary policies and is subject to fiscal and monetary controls. EMU members could voluntarily abandon or be forced out of the euro. Such events could impact the market values of Eurozone and various other securities and currencies, cause redenomination of certain securities into less valuable local currencies and create more volatile and illiquid markets. Certain countries and regions in the EU are experiencing significant financial difficulties. Some of these countries may be dependent on assistance from other European governments and institutions or agencies. One or more countries could depart from the EU, which could weaken the EU and, by extension, its remaining members. For example, the United Kingdom’s departure, described in more detail below.

Boston Common ESG Impact International Fund | Risk Of Focusing Investment On Region Or Country, United Kingdom Investment Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

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United Kingdom Investment Risk. The United Kingdom has one of the largest economies in Europe and is heavily dependent on trade with the European Union (“EU”) and the United States. As a result, the economy of the United Kingdom may be impacted by changes to the economic health of EU member counties and the United States. In 2020, the United Kingdom left the EU (referred to as “Brexit”). The United Kingdom and the EU reached a trade agreement that was ratified by all applicable United Kingdom and EU governmental bodies. The economic effects of Brexit, including certain negative impacts on the ability of the United Kingdom to trade seamlessly with the EU, are becoming clearer but some political, regulatory and commercial uncertainty in relation to the longer term impacts nevertheless remains to be resolved. Accordingly, there remains a risk that the aftermath of Brexit, including its ongoing effect on the United Kingdom’s relationships with other countries and with the EU, may negatively impact the value of investments held by the Fund. Additionally, increasing commodity prices and rising inflation levels prompted the United Kingdom government to implement significant policy changes. It is difficult to predict what effects such policies (or the suggestion of such policies) may have and the duration of those effects, which may last for extended periods.

Boston Common ESG Impact International Fund | Large Companies Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Large Companies Risk: Larger, more established companies may be unable to respond quickly to new competitive challenges like changes in consumer tastes or innovative smaller competitors. Also, large-cap companies are sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion.

Boston Common ESG Impact International Fund | Impact Investing Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Impact Investing Risk: The Fund may not succeed in generating a positive ESG and/or social impact. The Fund’s incorporation of ESG and/or social impact criteria into its investment process may cause the Fund to perform differently from a fund that uses a different methodology to identify and/or incorporate ESG and/or social impact criteria or relies solely or primarily on financial metrics. In addition,it may cause it to forego opportunities to buy certain securities that otherwise might be advantageous, or to sell securities when it might otherwise be advantageous to continue to hold these securities. The definition of “impact investing” will vary according to an investor’s beliefs and values. There is no guarantee that Boston Common’s definition of impact investing, ESG security selection criteria, or investment judgment will reflect the beliefs or values of any particular investor. To the extent Boston Common references third-party research and analytics in conducting its proprietary analysis, there is no guarantee that the data will be

accurate. Third-party providers may be less effective at rating companies located in the emerging markets and ratings may not be available from time to time.

Boston Common ESG Impact International Fund | Equity Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Equity Risk: Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value. These fluctuations may cause a security to be worth less than its cost when originally purchased or less than it was worth at an earlier time.

Boston Common ESG Impact International Fund | Depositary Receipt Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Depositary Receipt Risk: Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. In addition, holders of depositary receipts may have limited voting rights, may not have the same rights afforded to stockholders of a typical company in the event of a corporate action, such as an acquisition, merger or rights offering, and may experience difficulty in receiving company stockholder communications. There is no guarantee that a financial institution will continue to sponsor a depositary receipt, or that the depositary receipts will continue to trade on an exchange, either of which could adversely affect the liquidity, availability and pricing of the depositary receipt. Changes in foreign currency exchange rates will affect the value of depositary receipts and, therefore, may affect the value of your investment in the International Fund.

Boston Common ESG Impact International Fund | Emerging Markets Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Emerging Markets Risk: Emerging markets may involve greater risk and volatility than more developed markets. Some emerging markets countries may have fixed or managed currencies that are not free-floating against the U.S. dollar. Certain of these currencies have experienced, and may experience in the future, substantial fluctuations or a steady devaluation relative to the U.S. dollar.

Boston Common ESG Impact International Fund | Investments In Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Investments in Other Investment Companies: To the extent the Fund invests in shares of other investment companies, you will indirectly bear fees and expenses charged by those investment companies and will be subject to the risks that those investment companies are subject to.

Boston Common ESG Impact International Fund | Management Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Management Risk: Boston Common may fail to implement the International Fund’s investment strategies or meet its investment objective.

Boston Common ESG Impact International Fund | General Market Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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General Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes due to a number of factors, including: inflation (or expectations for inflation); interest rates; global demand for particular products or resources; natural disasters or events; pandemic diseases; terrorism; regulatory events; and government controls. U.S. and international markets have experienced significant periods of volatility in recent years and months due to a number of economic, political and global macro factors which has resulted in disruptions to business operations and supply chains, stress on the global health care system, growth concerns in the U.S. and overseas, staffing shortages and the inability to meet consumer demand, and widespread concern and uncertainty. Continuing uncertainties regarding interest rates, rising inflation, political events, rising government debt in the U.S., and trade tensions also contribute to market volatility. Conflict, loss of life and disaster connected to ongoing armed conflict between Ukraine and Russia in Europe and Israel and Hamas in the Middle East could have severe adverse effects on the region, including significant adverse affects on the regional or global economies and the markets for certain securities. The U.S. and the European Union imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. The war has contributed to market volatility and may continue to do so.

Boston Common ESG Impact International Fund | MSCI EAFE® Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

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Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

Label

rr_AverageAnnualReturnLabel

MSCI EAFE® Index (reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

18.24%

5 Years

rr_AverageAnnualReturnYear05

8.16%

10 Years

rr_AverageAnnualReturnYear10

4.28%

Since Inception

rr_AverageAnnualReturnSinceInception

5.18%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 29, 2010

Boston Common ESG Impact International Fund | Boston Common ESG Impact International Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BCAIX

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.17%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.97%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.11%)

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.86%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 88

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

298

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

526

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,180

Annual Return 2014

rr_AnnualReturn2014

(7.08%)

Annual Return 2015

rr_AnnualReturn2015

(1.97%)

Annual Return 2016

rr_AnnualReturn2016

(0.96%)

Annual Return 2017

rr_AnnualReturn2017

26.39%

Annual Return 2018

rr_AnnualReturn2018

(13.45%)

Annual Return 2019

rr_AnnualReturn2019

23.74%

Annual Return 2020

rr_AnnualReturn2020

18.55%

Annual Return 2021

rr_AnnualReturn2021

3.46%

Annual Return 2022

rr_AnnualReturn2022

(21.85%)

Annual Return 2023

rr_AnnualReturn2023

11.53%

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

11.53%

5 Years

rr_AverageAnnualReturnYear05

5.76%

10 Years

rr_AverageAnnualReturnYear10

2.70%

Since Inception

rr_AverageAnnualReturnSinceInception

3.52%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 29, 2010

Boston Common ESG Impact International Fund | Boston Common ESG Impact International Fund | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

11.07%

5 Years

rr_AverageAnnualReturnYear05

5.45%

10 Years

rr_AverageAnnualReturnYear10

2.43%

Since Inception

rr_AverageAnnualReturnSinceInception

3.27%

Boston Common ESG Impact International Fund | Boston Common ESG Impact International Fund | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

7.41%

5 Years

rr_AverageAnnualReturnYear05

4.69%

10 Years

rr_AverageAnnualReturnYear10

2.25%

Since Inception

rr_AverageAnnualReturnSinceInception

2.92%

Boston Common ESG Impact U.S. Equity Fund

Prospectus [Line Items]

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Risk/Return [Heading]

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Boston Common ESG Impact U.S. Equity Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Boston Common ESG Impact U.S. Equity Fund (the “U.S. Equity Fund”) seeks long-term capital appreciation.

Expense [Heading]

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Fees and Expenses of the U.S. Equity Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the U.S. Equity Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text]

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Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

January 31, 2025

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The U.S. Equity Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the above example, affect the U.S. Equity Fund’s performance. During the most recent fiscal year ended September 30, 2023, the U.S. Equity Fund’s portfolio turnover rate was 32% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

32.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the U.S. Equity Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the U.S. Equity Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the U.S. Equity Fund’s operating expenses remain the same (taking into account the contractual Expense Cap for the first year

only).

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Boston Common Asset Management, LLC (“Boston Common” or the “Adviser”) seeks to preserve and build capital over the long-term through investing in a diversified portfolio of stocks and American Depositary Receipts (“ADRs”) of companies we believe are high quality (lower debt/total capital, earnings stability and stable cash flow), sustainable and undervalued. We look for companies with sound governance and a history of responsible financial management that we believe are capable of consistent, visible profitability over a long time horizon. We look for indicators of quality in firms if they are experiencing superior growth and operating successfully in their respective economic sectors. We measure a firm’s growth by comparing its products or services or improving competitive conditions among its peers. We then determine whether any of the individual firms appear to be trading at discounts to their intrinsic value. Here our research-driven conviction is enhanced by our 360-degree perspective where we integrate financial and environmental, social, and governance (“ESG”) criteria into the stock selection process. We believe markets typically misvalue the risks and opportunities presented by ESG issues, both in terms of the timing and the magnitude of outcomes. We believe shareowner engagement plays a critically important role in raising the sustainability profile of our portfolios and empowers company management to be long-term in its focus.

Boston Common’s ESG research process integrates information from disparate sources to form a holistic understanding of corporate performance. The Adviser reviews company filings, trade journals, and industry reports to understand a company’s products and activities, and place it in context with its peers. We search business and news databases covering over 11,000 publications to capture events and analyses related to corporate practices. Boston Common references additional databases that document defense contracts, legal proceedings, and environmental violations, plus we subscribe to specialized ESG data services. The portfolio managers communicate regularly with trade unions, nongovernmental organizations, activist groups, and government agencies about corporate behavior on the ground and in the far reaches of the world. Boston Common queries corporate management through meetings, letter campaigns, emails, and phone calls about areas of particular concern. Drawing on this mosaic of sources, our analysts distill conclusions about a company’s overall profile across the full set of ESG issue areas. We may incorporate information from one or more third party ESG research providers, news sources, non-governmental organizations, and company and industry contacts. The Fund’s primary third party ESG research providers are MSCI ESG Ratings, MSCI ESG Metrics, MSCI ESG BISR Individual Screens, MSCI ESG Controversies, MSCI ESG BISR Global Sanctions, MSCI ESG Climate Change Metrics, ISS Climate Impact Reporting, Vigeo-Eiris, and Lexis-Nexis. We endeavor to integrate financial and sustainability factors into our investment process because we believe ESG research helps us identify companies that will be successful over the long‑term. We evaluate companies on (E)nvironmental issues,

looking for organizations that demonstrate a higher level of environmental responsibility than their peers and understand that natural resources are limited. We favor companies that conserve natural resources, reduce volume and toxicity of waste generated, and manage direct and indirect greenhouse gas emissions. We assess a company’s commitment to (S)ocial standards including human rights, animal welfare, workplace health and safety, and fair treatment of employees globally. We appraise companies’ adherence to best practices in (G)overnance, including policies favoring transparency and accountability to shareholders, and a commitment to diversity. As a result, we believe ESG research helps improve portfolio quality and financial return potential.

We use our voice as a shareowner to raise environmental, social, and governance issues with the management of select portfolio companies through a variety of channels. These may include engaging in dialogue with management, participating in shareholder proposal filings, voting proxies in accordance with our proxy voting guidelines, and participating in the annual shareholder meeting process. Through this effort, we seek to encourage a company’s management towards greater transparency, accountability, disclosure and commitment to ESG issues. In order to prioritize the Adviser’s focus and impact, Boston Common has established a three-year engagement framework with two to three key initiatives across our three sustainability pillars -environmental, social and governance. Boston Common continues to review these initiatives on an annual basis and track engagement impact through our reporting.

Common reviews the proxy voting results with its proxy vendor's custom policy team at the end of the proxy season to ensure the expected outcomes were achieved.

The U.S. Equity Fund will normally invest at least 80% of its net assets, plus borrowings for investment purposes, in equity securities of U.S. companies that meet the Adviser’s ESG criteria. Equity securities include common and preferred stocks, as well as securities that are convertible into common stocks. The U.S. Equity Fund may also invest up to 20% of its total assets in ADRs. The U.S. Equity Fund may also invest in other stable, cash-flow generating companies, including publicly-traded Real Estate Investment Trusts (“REITs”). The U.S. Equity Fund generally seeks to invest in companies that have market capitalizations of $2 billion or greater. The U.S. Equity Fund may at times invest a significant portion of its assets (greater than 25%) in specific sectors of the economy, such as in the information technology sector.

Strategy Portfolio Concentration [Text]

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Risk [Heading]

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Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the U.S. Equity Fund. The bar chart below illustrates how the U.S. Equity Fund’s total returns have varied from year‑to‑year. The table below illustrates how the U.S. Equity Fund’s average annual total returns for the 1-year, 5-year, 10-year and since-inception periods compare with that of a broad-based securities index. This comparison is provided to offer a broader market perspective. The U.S. Equity Fund’s past performance, before and after taxes, is not necessarily an indication of how the U.S. Equity Fund will perform in the future and does not guarantee future results. Updated performance information is available on the U.S. Equity Fund’s website at www.bostoncommonfunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the U.S. Equity Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.bostoncommonfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The U.S. Equity Fund’s past performance, before and after taxes, is not necessarily an indication of how the U.S. Equity Fund will perform in the future and does not guarantee future results.

Bar Chart [Heading]

rr_BarChartHeading

Calendar Year Total Return As of December 31,

Bar Chart Closing [Text Block]

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Highest Quarterly Return:	Q2, 2020	20.10	%

Lowest Quarterly Return:	Q1, 2020	-18.67	%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

20.10%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.67%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Return as of December 31, 2023

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and does not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Furthermore, the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or IRAs.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In certain cases, Return After Taxes on Distribution and Sale of Fund Shares may be higher than the other return figures for the same period. This will occur when a capital loss is realized upon the sale of Fund shares or provides an assumed tax benefit that increases the return. Your actual after-tax returns depend on your tax situation and may differ from these shown.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

In certain cases, Return After Taxes on Distribution and Sale of Fund Shares may be higher than the other return figures for the same period. This will occur when a capital loss is realized upon the sale of Fund shares or provides an assumed tax benefit that increases the return. Your actual after-tax returns depend on your tax situation and may differ from these shown.

Boston Common ESG Impact U.S. Equity Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk Narrative [Text Block]

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There is the risk that you could lose all or a portion of your investment in the U.S. Equity Fund.

Boston Common ESG Impact U.S. Equity Fund | ESG Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

ESG Policy Risk: The U.S. Equity Fund’s ESG policy could cause it to perform differently compared to similar funds that do not have such a policy. This ESG policy may result in the U.S. Equity Fund foregoing opportunities to buy certain securities when it might otherwise be advantageous to do so, or selling securities for ESG reasons when it might be otherwise disadvantageous for it to do so. The U.S. Equity Fund will vote proxies in a manner which is consistent with its ESG criteria, which may not always be consistent with maximizing short-term performance of the issuer.

Boston Common ESG Impact U.S. Equity Fund | Large Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact U.S. Equity Fund | Impact Investing Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact U.S. Equity Fund | Equity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact U.S. Equity Fund | Depositary Receipt Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact U.S. Equity Fund | Investments In Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact U.S. Equity Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Management Risk: Boston Common may fail to implement the U.S. Equity Fund’s investment strategies or meet its investment objective.

Boston Common ESG Impact U.S. Equity Fund | General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact U.S. Equity Fund | Real Estate Investment Trust Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

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Real Estate Investment Trust Risk: REIT prices may fall because of the failure of borrowers to pay their loans and/or poor management. The value of REITs may also be affected by increases in property taxes and changes in tax laws and interest rates.

Boston Common ESG Impact U.S. Equity Fund | Sector Focus Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

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Sector Focus Risk: This is the risk that the U.S. Equity Fund is subject to a greater risk of loss as a result of adverse economic, business or other developments affecting a specific sector that the U.S. Equity Fund has a focused position in, than if its investments were diversified across a greater number of industry sectors. Some sectors possess particular risks that may not affect other sectors.

◦Information Technology Risk: Although technology companies are found among a broad range of industries, they often face unusually high price volatility and losses can be significant. Technology companies may be significantly affected by short product cycles, aggressive pricing of products and services, competition from new market entrants and obsolescence of existing technology.

Boston Common ESG Impact U.S. Equity Fund | Sector Focus Risk, Information Technology Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Information Technology Risk: Although technology companies are found among a broad range of industries, they often face unusually high price volatility and losses can be significant. Technology companies may be significantly affected by short product cycles, aggressive pricing of products and services, competition from new market entrants and obsolescence of existing technology.

Boston Common ESG Impact U.S. Equity Fund | S&P 500® Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

Label

rr_AverageAnnualReturnLabel

S&P 500® Index (reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

26.29%

5 Years

rr_AverageAnnualReturnYear05

15.69%

10 Years

rr_AverageAnnualReturnYear10

12.03%

Since Inception

rr_AverageAnnualReturnSinceInception

13.26%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2012

Boston Common ESG Impact U.S. Equity Fund | Boston Common ESG Impact U.S. Equity Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BCAMX

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.42%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.17%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.17%)

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.00%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 102

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

355

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

627

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,405

Annual Return 2014

rr_AnnualReturn2014

8.64%

Annual Return 2015

rr_AnnualReturn2015

1.95%

Annual Return 2016

rr_AnnualReturn2016

7.88%

Annual Return 2017

rr_AnnualReturn2017

20.65%

Annual Return 2018

rr_AnnualReturn2018

(8.45%)

Annual Return 2019

rr_AnnualReturn2019

28.17%

Annual Return 2020

rr_AnnualReturn2020

19.53%

Annual Return 2021

rr_AnnualReturn2021

24.54%

Annual Return 2022

rr_AnnualReturn2022

(18.10%)

Annual Return 2023

rr_AnnualReturn2023

21.04%

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

21.04%

5 Years

rr_AverageAnnualReturnYear05

13.60%

10 Years

rr_AverageAnnualReturnYear10

9.58%

Since Inception

rr_AverageAnnualReturnSinceInception

10.89%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2012

Boston Common ESG Impact U.S. Equity Fund | Boston Common ESG Impact U.S. Equity Fund | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

20.60%

5 Years

rr_AverageAnnualReturnYear05

12.74%

10 Years

rr_AverageAnnualReturnYear10

8.82%

Since Inception

rr_AverageAnnualReturnSinceInception

10.12%

Boston Common ESG Impact U.S. Equity Fund | Boston Common ESG Impact U.S. Equity Fund | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

12.77%

5 Years

rr_AverageAnnualReturnYear05

10.81%

10 Years

rr_AverageAnnualReturnYear10

7.71%

Since Inception

rr_AverageAnnualReturnSinceInception

8.92%

Boston Common ESG Impact Emerging Markets Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Boston Common ESG Impact Emerging Markets Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Boston Common ESG Impact Emerging Markets Fund (the “Emerging Markets Fund” or “Fund”) seeks long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Emerging Markets Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Emerging Markets Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

January 31, 2025

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Emerging Markets Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the above example, affect the Fund’s performance. During the most recent fiscal year ended September 30, 2023, the Emerging Markets Fund’s portfolio turnover rate was 20% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

20.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Emerging Markets Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Emerging Markets Fund’s operating expenses remain the same (taking into account the contractual Expense Cap for the first year

only).

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Boston Common Asset Management, LLC (“Boston Common” or the “Adviser”) seeks to preserve and build capital over the long-term through investing in a diversified portfolio of common stocks , American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”) of companies we believe are high quality (lower debt/total capital, earnings stability and stable cash flow), sustainable and undervalued. We seek companies with sound governance and histories of responsible financial management that we believe are capable of consistent, visible profitability over a long time horizon. We look for indicators of quality in firms if they are experiencing superior growth and operating successfully in their respective economic sectors. We measure a firm’s growth by comparing its products or services or improving competitive conditions among its peers. We then determine whether any of the individual firms appear to be trading at discounts to their intrinsic value. Here our research-driven conviction is enhanced by our 360-degree perspective where we integrate financial and environmental, social, and governance (“ESG”) criteria into the stock selection process. We believe markets typically misvalue the risks and opportunities presented by ESG issues, both in terms of the timing and the magnitude of outcomes. We believe shareowner engagement plays a critically important role in raising the sustainability profile of our portfolios and empowers company management to be long-term in its focus.

companies that will be successful over the long-term. We evaluate companies on (E)nvironmental issues, looking for organizations that demonstrate a higher level of environmental responsibility than their peers and understand that natural resources are limited. We favor companies that conserve natural resources, reduce volume and toxicity of waste generated, and manage direct and indirect greenhouse gas emissions. We assess a company’s commitment to (S)ocial standards including human rights, animal welfare, workplace health and safety, and fair treatment of employees globally. We appraise companies’ adherence to best practices in (G)overnance, including policies favoring transparency and accountability to shareholders, and a commitment to diversity. As a result, we believe ESG research helps improve portfolio quality and financial return potential.

Common reviews the proxy voting results with its proxy vendor's custom policy team at the end of the proxy season to ensure the expected outcomes were achieved.

The Emerging Markets Fund will normally invest at least 80% of its net assets, plus borrowings for investment purposes, in the equity securities of companies either located in emerging market countries or which derive the majority of their revenue from emerging market countries and that meet the Adviser’s ESG criteria. Equity securities include common and preferred stocks, as well as in securities that are convertible into common stocks. The Emerging Markets Fund may also invest directly in securities denominated in foreign currencies or it may invest indirectly through ADRs, EDRs, and GDRs. The Emerging Markets Fund may also invest in other investment companies (including business development companies), exchange-traded funds (“ETFs”) and similarly structured pooled investments for the purpose of gaining exposure to certain markets while maintaining liquidity. The Adviser considers emerging markets to be those countries included in the MSCI Emerging Markets Index or classified by World Bank, the International Finance Corporation, and the United Nations (and its agencies). These countries are typically located in Central and Eastern Europe, Africa, the Middle East, Asia and Central and South America. The Emerging Markets Fund generally seeks to invest in companies that have market capitalizations of $2 billion or greater. The Fund may, from time to time, have significant exposure to one or more sectors of the market.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Emerging Markets Fund. The bar chart below illustrates how the Emerging Market Fund’s total returns have varied from year‑to‑year. The table below illustrates how the Emerging Market Fund’s average annual total returns for the 1-year and since-inception periods compare with that of a broad-based securities index. This comparison is provided to offer a broader market perspective. The Emerging Market Fund’s past performance, before and after taxes, is not necessarily an indication of how the Emerging Market Fund will perform in the future and does not guarantee future results. Updated performance information is available on the Emerging Market Fund’s website at www.bostoncommonfunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Emerging Markets Fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.bostoncommonfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Emerging Market Fund’s past performance, before and after taxes, is not necessarily an indication of how the Emerging Market Fund will perform in the future and does not guarantee future results.

Bar Chart [Heading]

rr_BarChartHeading

Calendar Year Total Return As of December 31,

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock


Highest Quarterly Return:	Q4, 2022	12.74	%

Lowest Quarterly Return:	Q3, 2022	-13.16	%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2022

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.74%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.16%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Return as of December 31, 2023

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and does not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Furthermore, the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or IRAs.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In certain cases, Return After Taxes on Distribution and Sale of Fund Shares may be higher than the other return figures for the same period. This will occur when a capital loss is realized upon the sale of Fund shares or provides an assumed tax benefit that increases the return. Your actual after-tax returns depend on your tax situation and may differ from these shown.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

In certain cases, Return After Taxes on Distribution and Sale of Fund Shares may be higher than the other return figures for the same period. This will occur when a capital loss is realized upon the sale of Fund shares or provides an assumed tax benefit that increases the return. Your actual after-tax returns depend on your tax situation and may differ from these shown.

Boston Common ESG Impact Emerging Markets Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

There is the risk that you could lose all or a portion of your investment in the Fund.

Boston Common ESG Impact Emerging Markets Fund | ESG Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

ESG Policy Risk: The Emerging Markets Fund’s ESG policy could cause the Emerging Markets Fund to perform differently compared to similar funds that do not have such a policy. This ESG policy may result in the Emerging Markets Fund foregoing opportunities to buy certain securities when it might otherwise be advantageous to do so, or selling securities for ESG reasons when it might be otherwise disadvantageous for it to do so. The Emerging Markets Fund will vote proxies in a manner which is consistent with its ESG criteria, which may not always be consistent with maximizing short-term performance of the issuer.

Boston Common ESG Impact Emerging Markets Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Boston Common ESG Impact Emerging Markets Fund | Specific Country Or Region Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Specific Country or Region Risk: Investing a significant portion of assets in one country or region makes the Fund more dependent upon the political and economic circumstances of that particular country or region.

◦Eurozone Investment Risk - The Economic and Monetary Union of the European Union (EMU) is comprised of the European Union (EU) members that have adopted the euro currency. By adopting the euro as its currency, a member state relinquishes control of its own monetary policies and is subject to fiscal and monetary controls. EMU members could voluntarily abandon, or be forced out of, the euro. Such events could impact the market values of Eurozone and various other securities and currencies, cause redenomination of certain securities into less valuable local currencies and create more volatile and illiquid markets. Certain countries and regions in the EU are experiencing significant financial difficulties. Some of these countries may be dependent on assistance from other European governments and institutions or agencies. One or more countries could depart from the EU, which could weaken the EU and, by extension, its remaining members.

◦Asia Investment Risk - Investments in countries in the Asian region will be impacted by the market conditions, legislative or regulatory changes, competition, or political, economic and other developments in Asia. Investments in China may subject the Fund to certain additional risks, including exposure to currency fluctuations, less liquidity, expropriation, confiscatory taxation, nationalization, exchange control regulations (including currency blockage), trading halts, imposition of tariffs, limitations on repatriation and differing legal standards.

Boston Common ESG Impact Emerging Markets Fund | Specific Country Or Region Risk, Eurozone Investment Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Eurozone Investment Risk - The Economic and Monetary Union of the European Union (EMU) is comprised of the European Union (EU) members that have adopted the euro currency. By adopting the euro as its currency, a member state relinquishes control of its own monetary policies and is subject to fiscal and monetary controls. EMU members could voluntarily abandon, or be forced out of, the euro. Such events could impact the market values of Eurozone and various other securities and currencies, cause redenomination of certain securities into less valuable local currencies and create more volatile and illiquid markets. Certain countries and regions in the EU are experiencing significant financial difficulties. Some of these countries may be dependent on assistance from other European governments and institutions or agencies. One or more countries could depart from the EU, which could weaken the EU and, by extension, its remaining members.

Boston Common ESG Impact Emerging Markets Fund | Specific Country Or Region Risk, Asia Investment Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk Narrative [Text Block]

rr_RiskTextBlock

Asia Investment Risk - Investments in countries in the Asian region will be impacted by the market conditions, legislative or regulatory changes, competition, or political, economic and other developments in Asia. Investments in China may subject the Fund to certain additional risks, including exposure to currency fluctuations, less liquidity, expropriation, confiscatory taxation, nationalization, exchange control regulations (including currency blockage), trading halts, imposition of tariffs, limitations on repatriation and differing legal standards.

Boston Common ESG Impact Emerging Markets Fund | Large Companies Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact Emerging Markets Fund | Impact Investing Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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of any particular investor. To the extent Boston Common references third-party research and analytics in conducting its proprietary analysis, there is no guarantee that the data will be accurate. Third-party providers may be less effective at rating companies located in the emerging markets and ratings may not be available from time to time.

Boston Common ESG Impact Emerging Markets Fund | Equity Risk Member

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Risk Narrative [Text Block]

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Equity Risk: Common stocks are susceptible to general stock market fluctuations which may result in volatile increases and decreases in value. These fluctuations may cause a security to be worth less than its cost when originally purchased or less than it was worth at an earlier time.

Boston Common ESG Impact Emerging Markets Fund | Depositary Receipt Risk Member

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will continue to sponsor a depositary receipt, or that the depositary receipts will continue to trade on an exchange, either of which could adversely affect the liquidity, availability and pricing of the depositary receipt. Changes in foreign currency exchange rates will affect the value of depositary receipts and, therefore, may affect the value of your investment in the Fund.

Boston Common ESG Impact Emerging Markets Fund | ETF Trading Risk Member

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Risk Narrative [Text Block]

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ETF Trading Risk: To the extent the Fund invests in ETFs, it is subject to additional risks that do not apply to mutual funds, including the risk that the market price of an ETF’s shares may trade at a discount to its net asset value (“NAV”), an active secondary trading market may not develop or be maintained, or trading may be halted by the exchange in which the ETFs trade, which may impact the Fund’s ability to sell its shares of an ETF. Where all or portion of the ETF’s underlying securities trade in a market that is closed when the market in which the ETF shares and listed in trading is open, there may be changes between the last quote and the closed foreign market and the value of such security during the ETF’s domestic trading day.

Boston Common ESG Impact Emerging Markets Fund | Foreign Currency Risk Member

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Risk Narrative [Text Block]

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Foreign Currency Risk: Currency movements may negatively impact value even when there is no change in value of the security in the issuer’s home country. Currency management strategies may substantially change the Emerging Markets Fund’s exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as Boston Common expects.

Boston Common ESG Impact Emerging Markets Fund | Emerging Markets Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact Emerging Markets Fund | Investments In Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Boston Common ESG Impact Emerging Markets Fund | Management Risk Member

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Risk Narrative [Text Block]

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Management Risk: Boston Common may fail to implement the Emerging Markets Fund’s investment strategies or meet its investment objective.

Boston Common ESG Impact Emerging Markets Fund | General Market Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact Emerging Markets Fund | Mid And Small-Capitalization Company Risk Member

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Risk Narrative [Text Block]

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Mid and Small-Capitalization Company Risk: Securities of mid-capitalization and small-capitalization companies may have comparatively greater price volatility and less liquidity than the securities of companies that have larger market capitalizations and/or that are traded on major stock exchanges. These securities may also be more difficult to value.

Boston Common ESG Impact Emerging Markets Fund | Newer Fund Risk Member

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Risk Narrative [Text Block]

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Newer Fund Risk: As a new fund, there can be no assurance that the Fund will grow or maintain an economically viable size.

Boston Common ESG Impact Emerging Markets Fund | Sector Focus Risk Member

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Risk Narrative [Text Block]

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Sector-Focus Risk: Investing a significant portion of the Fund’s assets in one sector of the market exposes the Fund to greater market risk and potential monetary losses than if those assets were spread among various sectors.

Boston Common ESG Impact Emerging Markets Fund | MSCI EM (Emerging Markets) Net (USD)

Prospectus [Line Items]

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Label

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MSCI EM (Emerging Markets) Net (USD)

1 Year

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9.83%

Since Inception

rr_AverageAnnualReturnSinceInception

(6.22%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 20, 2021

Boston Common ESG Impact Emerging Markets Fund | Boston Common ESG Impact Emerging Markets Fund

Prospectus [Line Items]

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Trading Symbol

dei_TradingSymbol

BCEMX

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.83%

^[3]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.68%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.69%)

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.99%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 101

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

462

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

848

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,929

Annual Return 2022

rr_AnnualReturn2022

(17.32%)

Annual Return 2023

rr_AnnualReturn2023

6.35%

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

6.35%

Since Inception

rr_AverageAnnualReturnSinceInception

(6.01%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 20, 2021

Boston Common ESG Impact Emerging Markets Fund | Boston Common ESG Impact Emerging Markets Fund | After Taxes on Distributions

Prospectus [Line Items]

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Label

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Return After Taxes on Distributions

1 Year

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6.02%

Since Inception

rr_AverageAnnualReturnSinceInception

(6.27%)

Boston Common ESG Impact Emerging Markets Fund | Boston Common ESG Impact Emerging Markets Fund | After Taxes on Distributions and Sales

Prospectus [Line Items]

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Label

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Return After Taxes on Distributions and Sale of Fund Shares

1 Year

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4.35%

Since Inception

rr_AverageAnnualReturnSinceInception

(4.36%)

Boston Common ESG Impact U.S. Value Fund

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Risk/Return [Heading]

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Boston Common ESG Impact U.S. Value Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Boston Common ESG Impact U.S. Value Fund (the “Value Fund” or “Fund”) seeks long-term capital appreciation.

Expense [Heading]

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Fees and Expenses of the Value Fund

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Value Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text]

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Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

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January 31, 2025

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Value Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the above example, affect the Fund’s performance. The Fund’s portfolio turnover rate for the Fund’s last fiscal year is not provided because the Fund had not commenced operations prior to the date of this Prospectus.

Other Expenses, New Fund, Based on Estimates [Text]

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Other Expenses are based on estimated amounts for the current fiscal year.

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Value Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Value Fund’s operating expenses remain the same (except that the example reflects the fee reduction/expense reimbursement arrangement through January 31, 2025).

Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Boston Common Asset Management, LLC (“Boston Common” or the “Adviser”) seeks to preserve and build capital over the long term through investing in a diversified portfolio of common stocks , American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”) of companies we believe are high quality (lower debt/total capital, earnings stability and stable cash flow), sustainable and undervalued. We seek companies with sound governance and histories of responsible financial management that we believe are capable of consistent, visible profitability over a long time horizon. We look for indicators of quality in firms operating successfully in economic sectors with improving industry competitive dynamics, but that appear to be trading at discounts to their intrinsic value. Here our research- driven conviction is enhanced by our 360-degree perspective where we integrate financial and environmental, social, and governance (“ESG”) criteria into the stock selection process. We believe markets typically misvalue the risks and opportunities presented by ESG issues, both in terms of the timing and the magnitude of outcomes. We believe shareowner engagement plays a critically important role in raising the sustainability profile of our portfolios and empowers company management to be long- term in its focus.

Boston Common’s ESG research process integrates information from disparate sources to form a holistic understanding of corporate performance. We may incorporate information from one or more third party ESG research providers, news sources, non-governmental organizations, and company and industry contacts. The Fund’s primary third party ESG research providers are MSCI ESG Ratings, MSCI ESG Metrics, MSCI ESG BISR Individual Screens, MSCI ESG Controversies, MSCI ESG BISR Global Sanctions, MSCI ESG Climate Change Metrics, ISS Climate Impact Reporting, Moody's, and Lexis- Nexis. We endeavor to integrate financial and sustainability factors into our investment process because we believe ESG research helps us identify companies that will be successful over the long-term. We evaluate companies on (E)nvironmental issues, looking for organizations that demonstrate a higher level of environmental responsibility than their peers and understand that natural resources are limited. We favor companies that conserve natural resources, reduce volume and toxicity of waste generated, and manage direct and indirect greenhouse gas emissions. We assess a company’s commitment to (S)ocial standards including human rights, animal welfare, workplace health and safety, and fair treatment of employees globally. We appraise companies’ adherence to best practices in (G)overnance, including policies favoring transparency and accountability to shareholders, and a commitment to diversity. As a result, we believe ESG research helps improve portfolio quality and financial return potential.

Boston Common’s ESG research process integrates information from disparate sources to form a holistic understanding of corporate performance. The Adviser reviews company filings, trade journals,

and industry reports to understand a company’s products and activities, and place it in context with its peers. We search business and news databases covering over 11,000 publications to capture events and analyses related to corporate practices. Boston Common references additional databases that document defense contracts, legal proceedings, and environmental violations, plus we subscribe to specialized ESG data services. The portfolio managers communicate regularly with trade unions, nongovernmental organizations, activist groups, and government agencies about corporate behavior on the ground and in the far reaches of the world. Boston Common queries corporate management through meetings, letter campaigns, emails, and phone calls about areas of particular concern. Drawing on this mosaic of sources, our analysts distill conclusions about a company’s overall profile across the full set of ESG issue areas.

Boston Common excludes companies that: (1) receive significant revenues (>5%) or have leading market share in production and marketing of tobacco products, including components; (2) receive significant revenues (>5%) or have leading market share in production and marketing of alcoholic beverages, including components; (3) receive significant revenues (>5%) or have leading market share from gambling devices or activities including lotteries and hotels with casinos; (4) operate or have direct equity ownership of nuclear power plants, mine or process uranium for fuel supply crucial components of nuclear power reactors (zero tolerance); (5) receive significant revenues (>10%) from nuclear power plant design, construction, maintenance or parts; (6) demonstrate a history and pattern of marketing unsafe products, asserting false marketing claims, or engaging in irresponsible marketing; (7) engage in irresponsible animal testing or widespread abuses of animals, such as in entertainment and factory farming; (8) receive significant revenues (>5%) from the production of firearms or military weapons systems, including key components; (9) produce or manufacture biological, chemical, or nuclear weapons, anti-personnel landmines, or cluster munitions (zero tolerance); and (10) rank in the top 50 global defense contractors for weapons.

Additionally, Boston Common measures and monitors its ESG engagement related impact by compiling the results of its direct dialogue with various portfolio holdings and the shareholder

proposals initiated by Boston Common. In addition, Boston Common participates in both dialogue and shareholder proposals initiated by various industry-led coalition groups.

The Value Fund will normally invest at least 80% of its net assets, plus borrowings for investment purposes, in the equity securities of U.S. companies that we believe are high quality (lower debt/total capital, earnings stability and stable cash flow), sustainable and undervalued and that meet the Adviser’s ESG criteria. Equity securities include common and preferred stocks, as well as in securities that are convertible into common stocks. The Value Fund may also invest in other investment companies (including business development companies), exchange-traded funds (“ETFs”) and similarly structured pooled investments for the purpose of gaining exposure to certain markets while maintaining liquidity. The Value Fund generally seeks to invest in companies that have market capitalizations of $2 billion or greater. The Fund may, from time to time, have significant exposure to one or more sectors of the market.

Risk [Heading]

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Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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Performance information for the Fund is not included because the Fund had not commenced operations as of the date of this Prospectus. Performance information will be available once the Fund has at least one calendar year of performance. Updated performance information is available on the Fund’s website http://www.bostoncommonfunds.com.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

Performance information for the Fund is not included because the Fund had not commenced operations as of the date of this Prospectus.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

http://www.bostoncommonfunds.com

Boston Common ESG Impact U.S. Value Fund | Risk Lose Money [Member]

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Risk Narrative [Text Block]

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There is the risk that you could lose all or a portion of your investment in the Fund.

Boston Common ESG Impact U.S. Value Fund | Value Company Risk Member

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Risk Narrative [Text Block]

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Value Company Risk: The value investment approach entails the risk that the market will not recognize a security’s intrinsic value for a long time, or that a stock the investment advisor judges to be undervalued may be appropriately priced.

Boston Common ESG Impact U.S. Value Fund | ESG Policy Risk Member

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Risk Narrative [Text Block]

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ESG Policy Risk: The Value Fund’s ESG policy could cause the Value Fund to perform differently compared to similar funds that do not have such a policy. This ESG policy may result in the Value Fund foregoing opportunities to buy certain securities when it might otherwise be advantageous to do so, or selling securities for ESG reasons when it might be otherwise disadvantageous for it to do so. The Value Fund will vote proxies in a manner which is consistent with its ESG criteria, which may not always be consistent with maximizing short-term performance of the issuer.

Boston Common ESG Impact U.S. Value Fund | Large Companies Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Impact Investing Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Impact Investing Risk: The Fund may not succeed in generating a positive ESG and/or social impact. The Fund’s incorporation of ESG and/or social impact criteria into its investment process may cause the Fund to perform differently from a fund that uses a different methodology to identify and/or incorporate ESG and/or social impact criteria or relies solely or primarily on financial metrics. In addition, it may cause it to forego opportunities to buy certain securities that otherwise might be advantageous, or to sell securities when it might otherwise be advantageous to continue to hold these securities. The definition of “impact investing” will vary according to an investor’s beliefs and values. There is no guarantee that Boston Common’s definition of impact investing, ESG security selection criteria, or investment judgment will reflect the beliefs or values of any particular investor. To the extent Boston Common references third-party research and analytics in conducting its proprietary analysis, there is no guarantee that the data will be accurate.

Boston Common ESG Impact U.S. Value Fund | Equity Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Depositary Receipt Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | ETF Trading Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Investments In Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Management Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Management Risk: Boston Common may fail to implement the Value Fund’s investment strategies or meet its investment objective.

Boston Common ESG Impact U.S. Value Fund | General Market Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Mid And Small-Capitalization Company Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Mid and Small-Capitalization Company Risk: Securities of mid-capitalization and small- capitalization companies may have comparatively greater price volatility and less liquidity than the securities of companies that have larger market capitalizations and/or that are traded on major stock exchanges. These securities may also be more difficult to value.

Boston Common ESG Impact U.S. Value Fund | New Fund Risk Member

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Risk Narrative [Text Block]

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Newer Fund Risk: As a new fund, there can be no assurance that the Fund will grow or maintain an economically viable size.

Boston Common ESG Impact U.S. Value Fund | Real Estate Investment Trust Risk Member

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Sector Focus Risk Member

Prospectus [Line Items]

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Risk Narrative [Text Block]

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Boston Common ESG Impact U.S. Value Fund | Boston Common ESG Impact U.S. Value Fund

Prospectus [Line Items]

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Trading Symbol

dei_TradingSymbol

BCVIX

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

1.41%

^[5],[6]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

2.11%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.21%)

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.90%

^[7]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 92

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

$ 419

[1]	The Adviser has contractually agreed to reduce its fees and/or pay International Fund expenses (excluding acquired fund fees and expenses, interest expense in connection with investment activities, taxes, extraordinary expenses, shareholder servicing fees and any other class specific expenses) in order to limit Total Annual Fund Operating Expenses After Fee Reduction and/or Expense Reimbursement to 0.86% of the International Fund’s average daily net assets (the “Expense Cap”). The Expense Cap is indefinite, but will remain in effect until at least January 31, 2025 and may be terminated at any time by the Trust’s Board of Trustees (the “Board”) upon 60 days’ notice to the Adviser, or by the Adviser with consent of the Board. The Adviser is permitted, with Board approval, to be reimbursed for fee reductions and/or expense payments made in the prior three years. This reimbursement may be requested if the aggregate amount actually paid by the International Fund toward operating expenses for such period (taking into account any reimbursement) does not exceed the lesser of the Expense Cap in place at the time of waiver or at the time of reimbursement.
[2]	The Adviser has contractually agreed to reduce its fees and/or pay U.S. Equity Fund expenses (excluding acquired fund fees and expenses, interest expense in connection with investment activities, taxes, extraordinary expenses, shareholder servicing fees and any other class specific expenses) in order to limit Total Annual Fund Operating Expenses After Fee Reduction and/or Expense Reimbursement to 1.00% of the U.S. Equity Fund’s average daily net assets (the “Expense Cap”). The Expense Cap is indefinite, but will remain in effect until at least January 31, 2025 and may be terminated at any time by the Trust’s Board of Trustees (the “Board”) upon 60 days’ notice to the Adviser, or by the Adviser with consent of the Board. The Adviser is permitted, with Board approval, to be reimbursed for fee reductions and/or expense payments made in the prior three years. This reimbursement may be requested if the aggregate amount actually paid by the U.S. Equity Fund toward operating expenses for such period (taking into account any reimbursement) does not exceed the lesser of the Expense Cap in place at the time of waiver or at the time of reimbursement.
[3]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies, including money market funds and other mutual funds, closed end funds, business development companies or certain exchange-traded funds.
[4]	The Adviser has contractually agreed to reduce its fees and/or pay Emerging Markets Fund expenses (excluding acquired fund fees and expenses, interest expense in connection with investment activities, taxes, extraordinary expenses, shareholder servicing fees and any other class specific expenses) in order to limit Total Annual Fund Operating Expenses After Fee Reduction and/or Expense Reimbursement to 0.99% of the Fund’s average daily net assets (the “Expense Cap”). The Expense Cap is indefinite, but will remain in effect until at least January 31, 2025 and may be terminated at any time by the Trust’s Board of Trustees (the “Board”) upon 60 days’ notice to the Adviser, or by the Adviser with consent of the Board. The Adviser is permitted, with Board approval, to be reimbursed for fee reductions and/or expense payments made in the prior three years from the date the fees were waived and/or expenses were paid. This reimbursement may be requested if the aggregate amount actually paid by the Emerging Markets Fund toward operating expenses for such period (taking into account any reimbursement) does not exceed the lesser of the Expense Cap in place at the time of waiver or at the time of reimbursement.
[5]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies, including money market funds and other mutual funds, closed end funds, business development companies or certain exchange-traded funds.
[6]	Other Expenses are based on estimated amounts for the current fiscal year.
[7]	The Adviser has contractually agreed to reduce its fees and/or pay Value Fund expenses (excluding acquired fund fees and expenses, interest expense in connection with investment activities, taxes, extraordinary expenses, shareholder servicing fees and any other class specific expenses) in order to limit Total Annual Fund Operating Expenses After Fee Reduction and/or Expense Reimbursement to 0.90% of the Fund’s average daily net assets (the “Expense Cap”). The Expense Cap is indefinite, but will remain in effect until at least January 31, 2025 and may be terminated at any time by the Trust’s Board of Trustees (the “Board”) upon 60 days’ notice to the Adviser, or by the Adviser with consent of the Board. The Adviser is permitted, with Board approval, to be reimbursed for fee reductions and/or expense payments made in the prior three years from the date the fees were waived and/or expenses were paid. This reimbursement may be requested if the aggregate amount actually paid by the Fund toward operating expenses for such period (taking into account any reimbursement) does not exceed the lesser of the Expense Cap in place at the time of waiver or at the time of reimbursement.