This example is intended to help you compare the cost of investing in Institutional Class or Investor Class shares of the Large Cap Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class or Investor Class shares of the Large Cap Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the Large Cap Fund’s operating expenses remain the same throughout those periods. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Large Cap Fund follows a sustainable investing approach, investing in companies that the Adviser believes are well positioned to benefit from the transition to a more sustainable global economy, integrating environmental, social and governance (ESG) analysis and ratings into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of S&P 500 Index companies.

The Fund utilizes the Impax Sustainability Lens, a proprietary tool designed to facilitate a systematic review of the economic opportunities and risks associated with the transition to a more sustainable economy. The tool highlights sub-industries with transition tailwinds and headwinds, assisting the investment team in identifying companies that the Adviser believes present attractive opportunities and lower risks.

The Fund’s investment team also utilizes the Impax Systematic ESG Rating, a fundamental, bottom-up rating by the Adviser of a company’s ESG profile. The rating emphasizes management of ESG-related risks, incorporates ESG trends (taking into account progress or regression in a company’s ESG profile) and takes into account any involvement by the company in significant ESG-related controversies.

Under normal market conditions, the Large Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities (such as common stocks, securities convertible into common or preferred stocks and

warrants) of companies that, when purchased, have capitalizations within the range of the S&P 500 Index as measured by market capitalization. As of December 31, 2021, the S&P 500 Index included companies with market capitalizations ranging from approximately $6.56 billion to $2,901.65 billion.

The Large Cap Fund selects equity securities on a company-by-company basis primarily through the use of fundamental analysis. The Fund may take significant positions in one or more sectors, including the information technology sector. The Large Cap Fund is not constrained by any particular investment style, and may therefore invest in “growth” stocks, “value” stocks or a combination of both. Additionally, it may buy stocks in any sector or industry. The portfolio managers currently expect that the Fund typically will hold between 30 and 60 securities positions.

The Large Cap Fund may invest up to 45% of its assets in securities of non-US issuers, including American Depositary Receipts (“ADRs”). The Large Cap Fund may invest no more than 25% of its assets in securities of non-US issuers other than ADRs. The Large Cap Fund’s investments in securities of non-US issuers may include investments in emerging markets.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

●

Equity Securities Risk The market price of equity securities may fluctuate significantly, rapidly and unpredictably, causing the Fund to experience losses. The prices of equity securities generally are more volatile than the prices of debt securities.

●

Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry or other factors including terrorism, war, natural disasters and the spread of infectious disease including epidemics or pandemics such as the COVID-19 outbreak may adversely affect security prices, thereby reducing the value of the Fund’s investments. To the extent the Fund takes significant positions in one or more specific sectors, countries or regions, the Fund will be subject to the risks associated with such sector(s), country(ies) or region(s) to a greater extent than would be a more broadly diversified fund.

●

Non-US Securities Risk Non-US securities may have less liquidity and more volatile prices than domestic securities, which can make it difficult for the Fund to sell such securities at desired times or prices. Non-US markets may

differ from US markets in material and adverse ways. For example, securities transaction expenses generally are higher, transaction settlement may be slower, recourse in the event of default may be more limited and taxes and currency exchange controls may limit amounts available for distribution to shareholders. Non-US investments are also subject to the effects of local political, social, diplomatic or economic events.

●

Focused Portfolio Risk To the extent the Fund invests its assets in a more limited number of issuers than many other mutual funds, a decline in the market value of a particular security may affect the Fund’s value more than if the Fund invested in a larger number of issuers.

●

Management Risk The Fund is actively managed. The investment techniques and decisions of the investment adviser and the Fund’s portfolio manager(s), including the investment adviser’s assessment of a company’s ESG profile when selecting investments for the Fund, may not produce the desired results and may adversely impact the Fund’s performance, including relative to other funds that do not consider ESG factors or come to different conclusions regarding such factors.

●

Growth Securities Risk The values of growth securities may be more sensitive to changes in current or expected earnings than the values of other securities.

●

Value Securities Risk Value securities are securities the investment adviser believes are selling at a price lower than their true value, perhaps due to adverse business developments or special risks. If that belief is wrong or remains unrecognized by the market, the price of the securities may decline or may not appreciate as anticipated.

●

Medium-Sized Capitalization Company Risk Securities of medium-sized companies may have less liquidity and more volatile prices than securities of larger companies, which can make it difficult for the Fund to sell such securities at desired times or prices.

●

Turnover Risk Frequent changes in the securities held by the Fund increases the Fund’s transaction costs and may result in adverse tax consequences, which together may adversely affect the Fund’s performance.

●

Emerging Markets Risk Investments in emerging markets are likely to have greater exposure to the risks associated with investments in non-US securities generally. Additionally, emerging market countries generally have less mature economies and less developed securities markets with more limited trading activity, are more heavily dependent on international trade and support, have a higher risk of currency devaluation, and may have more volatile inflation rates or longer periods of high inflation than more developed countries.

●

Information Technology Sector Risk Prices of technology companies’ securities historically have been more volatile than those of many other securities, especially over the short term. Technology companies are subject to significant competitive pressures, such as aggressive pricing of their products or services, new market entrants, competition for market share, short product cycles due to an accelerated rate of technological developments, evolving industry standards, changing customer demands and the potential for limited earnings and/or falling profit margins. The failure of a company to adapt to such changes could have a material adverse effect on the company’s business, results of operations, and financial condition. Many technology companies have limited operating histories.

As with all mutual funds, investors may lose money by investing in the Large Cap Fund.

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 118 for more detailed descriptions of the foregoing risks.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart is intended to provide some indication of the risk of investing in the Large Cap Fund by showing changes in the Large Cap Fund’s performance from year to year

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.impaxam.com

Bar Chart [Heading]

rr_BarChartHeading

Institutional Class

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax performance is presented only for Institutional Class shares of the Fund. After-tax returns for Investor Class shares may vary.

1 Year

rr_AverageAnnualReturnYear01

28.71%

^[1],[2]

Since Inception

rr_AverageAnnualReturnSinceInception

18.12%

^[1],[2]

1 Year

rr_AverageAnnualReturnYear01

26.04%

^[2],[3]

Since Inception

rr_AverageAnnualReturnSinceInception

16.37%

^[2],[3]

Trading Symbol

dei_TradingSymbol

PXLIX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.71%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

227

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 883

Annual Return 2018

rr_AnnualReturn2018

(4.79%)

Annual Return 2020

rr_AnnualReturn2020

23.99%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

20.09%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

1 Year

rr_AverageAnnualReturnYear01

30.92%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

19.99%

^[4]

1 Year

rr_AverageAnnualReturnYear01

28.37%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

16.96%

^[4]

1 Year

rr_AverageAnnualReturnYear01

18.79%

^[4]

Since Inception

rr_AverageAnnualReturnSinceInception

15.09%

^[4]

Trading Symbol

dei_TradingSymbol

PAXLX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.97%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

309

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,190

5 Years

rr_AverageAnnualReturnYear05

20.06%

^[4]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 16, 2016

^[4]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fees & Expenses

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in Institutional Class, Investor Class or Class A shares of the Small Cap Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class, Investor Class or Class A shares of the Small Cap Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the Small Cap Fund’s operating expenses remain the same throughout those periods. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Small Cap Fund follows a sustainable investing approach, investing in companies that the Adviser believes are well positioned to benefit from the transition to a more sustainable global economy, integrating environmental, social and governance (ESG) analysis and ratings into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of Russell 2000 Index companies.

The Fund utilizes the Impax Sustainability Lens, a proprietary tool designed to facilitate a systematic review of the economic opportunities and risks associated with the transition to a more sustainable economy. The tool highlights sub-industries with transition tailwinds and headwinds, assisting the investment team in identifying companies that the Adviser believes present attractive opportunities and lower risks.

Under normal market conditions, the Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities (such as common stocks, securities convertible into common or preferred stocks and warrants) of companies that, when purchased, have capitalizations within the range of the Russell 2000 Index as measured by market capitalization. As of December 31, 2021, the Russell 2000 Index included companies with market capitalizations from approximately $31.57 million to $13.98 billion.

The Small Cap Fund selects equity securities on a company-by-company basis primarily through the use of fundamental analysis. The Fund may take significant positions in one or more sectors, including the financial services sector. The Small Cap Fund is not constrained by any particular investment style, and may therefore invest in “growth” stocks, “value” stocks or a combination of both. Moreover, it may buy stocks in any sector or industry.

The Small Cap Fund may invest up to 45% of its assets in securities of non-US issuers, including American Depositary Receipts (“ADRs”). The Small Cap Fund may invest no more than 25% of its assets in securities of non-US issuers other than ADRs. The Small Cap Fund’s investments in securities of non-US issuers, if any, may be diversified across multiple countries or geographic regions, or may be focused in a single country or geographic region.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

●

Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry or other factors including terrorism, war, natural disasters and the spread of infectious disease including epidemics or pandemics such as the COVID-19 outbreak may adversely affect security prices, thereby reducing the value of the Fund’s investments. To the extent the Fund takes significant positions in one or more specific sectors, countries or regions, the Fund will be subject to the risks associated with such sector(s), country(ies) or region(s) to a greater extent than would be a more broadly diversified fund.

●

Equity Securities Risk The market price of equity securities may fluctuate significantly, rapidly and unpredictably, causing the Fund to experience losses. The prices of equity securities generally are more volatile than the prices of debt securities.

●

Non-US Securities Risk Non-US securities may have less liquidity and more volatile prices than domestic securities, which can make it difficult for the Fund to sell such securities at desired times or prices. Non-US markets may differ from US markets in material and adverse ways. For example, securities transaction expenses generally are higher, transaction settlement may be slower, recourse in the event of default may be more limited and taxes and currency exchange controls may limit amounts available for distribution to shareholders. Non-US investments are also subject to the effects of local political, social, diplomatic or economic events.

●

Turnover Risk Frequent changes in the securities held by the Fund increases the Fund’s transaction costs and may result in adverse tax consequences, which together may adversely affect the Fund’s performance.

●

Growth Securities Risk The values of growth securities may be more sensitive to changes in current or expected earnings than the values of other securities.

●

Small- and Medium-Sized Capitalization Company Risk Securities of small- and medium-sized companies may have less liquidity and more volatile prices than securities of larger companies, which can make it difficult for the Fund to sell such securities at desired times or prices.

●

Value Securities Risk Value securities are securities the investment adviser believes are selling at a price lower than their true value, perhaps due to adverse business developments or special risks. If that belief is wrong or remains unrecognized by the market, the price of the securities may decline or may not appreciate as anticipated.

●

Financial Services Sector Risk Companies in the financial services sector are subject to the risk of regulatory change, decreased liquidity in credit markets, extensive governmental regulation, and unstable interest rates. Such companies may have concentrated portfolios, which makes them vulnerable to economic conditions that affect that industry. Performance of such companies may be affected by competitive pressures and exposure to investments or agreements that, under certain circumstances, may lead to losses.

●

Management Risk The Fund is actively managed. The investment techniques and decisions of the investment adviser and the Fund’s portfolio manager(s), including the investment adviser’s assessment of a company’s ESG profile when selecting investments for the Fund, may not produce the desired results and may adversely impact the Fund’s performance, including relative to other funds that do not consider ESG factors or come to different conclusions regarding such factors.

As with all mutual funds, investors may lose money by investing in the Small Cap Fund.

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 118 for more detailed descriptions of the foregoing risks.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart is intended to provide some indication of the risk of investing in the Small Cap Fund by showing changes in the Small Cap Fund’s performance from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.impaxam.com

Bar Chart [Heading]

rr_BarChartHeading

Investor Class

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts).

1 Year

rr_AverageAnnualReturnYear01

14.82%

^[5],[6]

10 Years

rr_AverageAnnualReturnYear10

13.23%

^[5],[6]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

11.91%

^[6],[7]

Trading Symbol

dei_TradingSymbol

PXSCX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.15%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

365

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,398

Annual Return 2013

rr_AnnualReturn2013

43.24%

Annual Return 2015

rr_AnnualReturn2015

(3.85%)

Annual Return 2017

rr_AnnualReturn2017

8.77%

Annual Return 2019

rr_AnnualReturn2019

23.29%

Annual Return 2021

rr_AnnualReturn2021

30.19%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2020

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst quarter

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(29.24%)

5 Years

rr_AverageAnnualReturnYear05

10.43%

^[8]

1 Year

rr_AverageAnnualReturnYear01

26.70%

^[8]

10 Years

rr_AverageAnnualReturnYear10

11.07%

^[8]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

7.72%

^[8]

Trading Symbol

dei_TradingSymbol

PXSAX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

^[9]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.15%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

895

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,871

5 Years

rr_AverageAnnualReturnYear05

9.19%

^[8],[10]

Trading Symbol

dei_TradingSymbol

PXSIX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.90%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

287

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,108

5 Years

rr_AverageAnnualReturnYear05

10.72%

^[8]

Risk/Return [Heading]

rr_RiskReturnHeading

Pax US Sustainable Economy Fund (the “US Sustainable Economy Fund”) Summary of Key Information

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The US Sustainable Economy Fund’s investment objective is to seek long-term growth of capital.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy, hold, and sell Institutional Class, Investor Class or Class A shares of the US Sustainable Economy 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. You may qualify for sales charge discounts for Class A shares if you and your spouse or minor children invest, or agree to invest in the future, at least $50,000 in Class A shares of the US Sustainable Economy Fund. More information about these and other discounts is available from your financial intermediary, under “Shareholder Guide—Sales Charges” on page 146 of this Prospectus and under “Distribution and Shareholder Services—Sales Charge Reductions and Waivers” on page 108 in the Statement of Additional Information. Investors investing in the US Sustainable Economy Fund through an intermediary should consult Appendix A to this Prospectus, which includes information regarding financial intermediary specific sales charges and related discount policies that apply to purchases through certain specified intermediaries.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

47.00%

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in Institutional Class, Investor Class or Class A shares of the US Sustainable Economy Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class, Investor Class or Class A shares of the US Sustainable Economy Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the US Sustainable Economy Fund’s operating expenses remain the same throughout those periods. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The US Sustainable Economy Fund follows a sustainable investing approach, investing in companies that the Adviser believes are well positioned to benefit from the transition to a more sustainable economy, integrating environmental, social and governance (ESG) analysis into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of Russell 1000 Index companies.

Under normal market conditions, the Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in large-capitalization US equity securities. The Fund also may invest up to 20% of its assets in non-US issuers, including emerging market investments and American Depository Receipts (ADRs).

The Fund employs a systematic investment strategy that integrates proprietary and external tools and metrics in the portfolio construction process. The Fund incorporates the Impax Sustainability Lens, a tool utilized by the Adviser to facilitate a systematic review of the economic opportunities and risks associated with the transition to a more sustainable economy. The tool highlights sub-industries with transition tailwinds and headwinds, enabling the investment team to construct a portfolio weighted towards companies that the Adviser believes present attractive opportunities and lower risks. The Fund may take significant positions in one or more sectors, including the information technology sector.

The Fund also utilizes the Impax Systematic ESG Rating, a fundamental, bottom-up rating by the Adviser of a company’s ESG profile. The rating emphasizes management of ESG-related risks, incorporates ESG trends (taking into account progress or regression in a company’s ESG profile) and takes into account any involvement by the company in significant ESG-related controversies.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same. The Fund also utilizes an investment approach we call SmartCarbon™, wherein fossil fuel holdings are replaced with energy efficiency stocks. This approach is described more fully below under Sustainable Investing in the About the Funds section of this Prospectus.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

●

Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry or other factors including terrorism, war, natural disasters and the spread of infectious disease including epidemics or pandemics such as the COVID-19 outbreak may adversely affect security prices, thereby reducing the value of the Fund’s investments. To the extent the Fund takes significant positions in one or more specific sectors, countries or regions, the Fund will be subject to the risks associated with such sector(s), country(ies) or region(s) to a greater extent than would be a more broadly diversified fund.

●

Equity Securities Risk The market price of equity securities may fluctuate significantly, rapidly and unpredictably, causing the Fund to experience losses. The prices of equity securities generally are more volatile than the prices of debt securities.

●

Non-US Securities Risk Non-US securities may have less liquidity and more volatile prices than domestic securities, which can make it difficult for the Fund to sell such securities at desired times or prices. Non-US markets may differ from US markets in material and adverse ways. For example, securities transaction expenses generally are higher, transaction settlement may be slower, recourse in the event of default may be more limited and taxes and currency exchange controls may limit amounts available for distribution to shareholders. Non-US investments are also subject to the effects of local political, social, diplomatic or economic events.

●

Turnover Risk Frequent changes in the securities held by the Fund increases the Fund’s transaction costs and may result in adverse tax consequences, which together may adversely affect the Fund’s performance.

●

Growth Securities Risk The values of growth securities may be more sensitive to changes in current or expected earnings than the values of other securities.

●

Value Securities Risk Value securities are securities the investment adviser believes are selling at a price lower than their true value, perhaps due to adverse business developments or special risks. If that belief is wrong or remains unrecognized by the market, the price of the securities may decline or may not appreciate as anticipated.

●

Information Technology Sector Risk Prices of technology companies’ securities historically have been more volatile than those of many other securities, especially over the short term. Technology companies are subject to significant competitive pressures, such as aggressive pricing of their products or services, new market entrants, competition for market share, short product cycles due to an accelerated rate of technological

developments, evolving industry standards, changing customer demands and the potential for limited earnings and/or falling profit margins. The failure of a company to adapt to such changes could have a material adverse effect on the company’s business, results of operations, and financial condition. Many technology companies have limited operating histories.

●

Emerging Markets Risk Investments in emerging markets are likely to have greater exposure to the risks associated with investments in non-US securities generally. Additionally, emerging market countries generally have less mature economies and less developed securities markets with more limited trading activity, are more heavily dependent on international trade and support, have a higher risk of currency devaluation, and may have more volatile inflation rates or longer periods of high inflation than more developed countries.

●

Management Risk The Fund is actively managed. The investment techniques and decisions of the investment adviser and the Fund’s portfolio manager(s), including the investment adviser’s assessment of a company’s ESG profile when selecting investments for the Fund, may not produce the desired results and may adversely impact the Fund’s performance, including relative to other funds that do not consider ESG factors or come to different conclusions regarding such factors.

As with all mutual funds, investors may lose money by investing in the US Sustainable Economy Fund.

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 118 for more detailed descriptions of the foregoing risks.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart is intended to provide some indication of the risk of investing in the US Sustainable Economy Fund by showing changes in the US Sustainable Economy Fund’s performance from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.impaxam.com

Bar Chart [Heading]

rr_BarChartHeading

Investor Class

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax performance is presented only for Investor Class Shares of the Fund. After-tax returns for Class A and Institutional Class shares may vary.

1 Year

rr_AverageAnnualReturnYear01

26.45%

^[11],[12]

10 Years

rr_AverageAnnualReturnYear10

16.54%

^[11],[12]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

16.53%

^[12],[13]

Trading Symbol

dei_TradingSymbol

PXWGX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.18%)

^[15]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 72

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

451

Annual Return 2012

rr_AnnualReturn2012

13.08%

Annual Return 2014

rr_AnnualReturn2014

11.66%

Annual Return 2016

rr_AnnualReturn2016

6.26%

Annual Return 2018

rr_AnnualReturn2018

(4.43%)

Annual Return 2020

rr_AnnualReturn2020

13.34%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.29%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

1 Year

rr_AverageAnnualReturnYear01

30.02%

^[16]

10 Years

rr_AverageAnnualReturnYear10

14.50%

^[16]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

14.56%

^[16]

1 Year

rr_AverageAnnualReturnYear01

20.39%

^[16]

10 Years

rr_AverageAnnualReturnYear10

11.63%

^[16]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.63%

^[14]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.88%

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.70%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

780

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,542

5 Years

rr_AverageAnnualReturnYear05

15.56%

^[16],[18]

Trading Symbol

dei_TradingSymbol

PWGIX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.18%)

^[15]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 46

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

315

1 Year

rr_AverageAnnualReturnYear01

30.35%

^[16]

10 Years

rr_AverageAnnualReturnYear10

14.78%

^[16]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objectives

Expense [Heading]

rr_ExpenseHeading

Fees & Expenses

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

April 30, 2024

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The 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 shares are held in a taxable account. These transaction costs, which are not reflected in “Annual Fund Operating Expenses” or in the “Example of Expenses,” affect the Global Sustainable Infrastructure Fund’s performance. During the Global Sustainable Infrastructure Fund’s most recent fiscal year, the Global Sustainable Infrastructure Fund’s portfolio turnover rate was 127% of the average value of its portfolio.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example of Expenses

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all mutual funds, investors may lose money by investing in the Global Sustainable Infrastructure Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Prior to March 31, 2021, Pax Global Sustainable Infrastructure Fund was known as Pax ESG Beta Dividend Fund and the strategy of the Fund differed from its current strategy. Accordingly, performance of the Fund for periods prior to March 31, 2021 may not be representative of the performance the Fund would have achieved had the Fund been following its current strategy.

The bar chart below presents the calendar year total returns for Institutional Class shares of the Global Sustainable Infrastructure Fund before taxes. The bar chart is intended to provide some indication of the risk of investing in the Sustainable Infrastructure Fund by showing changes in the Sustainable Infrastructure Fund’s performance from year to year. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800.767.1729

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

For the periods shown in the bar chart:	Best quarter: 2nd quarter 2020, 20.20% 6/30/20
	Worst quarter: 1st quarter 2020, -20.06% 3/31/20

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Average Annual Total Returns The performance table below presents the average annual total returns for Institutional Class and Investor Class shares of the Global Sustainable Infrastructure Fund. The performance table is intended to provide some indication of the risks of investment in the Global Sustainable Infrastructure Fund by showing how the Global Sustainable Infrastructure Fund’s average annual total returns compare with the returns of a broad-based securities market index and a performance average of other similar mutual funds, each over a one-year, five-year and since inception period. After-tax performance is presented only for Institutional Class shares of the Fund. After-tax returns for Investor Class shares may vary. After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes. Actual after-tax returns will depend on a shareholder’s own tax situation and may differ from those shown.

After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts). As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

6.86%

^[19],[20]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 16, 2016

^[19],[20]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

9.21%

^[20],[21]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 16, 2016

^[20],[21]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

^[22]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.65%

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.55%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

187

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 791

Annual Return 2018

rr_AnnualReturn2018

(3.84%)

Annual Return 2020

rr_AnnualReturn2020

14.54%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

20.20%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

1 Year

rr_AverageAnnualReturnYear01

14.16%

^[24]

Since Inception

rr_AverageAnnualReturnSinceInception

13.31%

^[24]

1 Year

rr_AverageAnnualReturnYear01

2.27%

^[24]

Since Inception

rr_AverageAnnualReturnSinceInception

9.98%

^[24]

1 Year

rr_AverageAnnualReturnYear01

13.90%

^[24]

Since Inception

rr_AverageAnnualReturnSinceInception

9.98%

^[24]

Trading Symbol

dei_TradingSymbol

PAXDX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.10%)

^[23]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 82

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

478

1 Year

rr_AverageAnnualReturnYear01

13.86%

^[24]

Since Inception

rr_AverageAnnualReturnSinceInception

13.01%

^[24]

Risk/Return [Heading]

rr_RiskReturnHeading

Pax Global Opportunities Fund (the “Global Opportunities Fund”) Summary of Key Information

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Global Opportunities Fund’s investment objective is to seek long term growth of capital by investing in companies benefiting from the transition to a more sustainable global economy.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy, hold, and sell Institutional Class or Investor Class shares of the Global Opportunities 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.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

30.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in Institutional Class or Investor Class shares of the Global Opportunities Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class or Investor Class shares of the Global Opportunities Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the Global Opportunities Fund’s operating expenses remain the same throughout those periods. The amounts shown reflect the contractual reimbursement noted in the Annual Fund Operating Expenses table for the first year. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Global Opportunities Fund follows a sustainable investing approach, investing in companies that the Sub-Adviser believes are well positioned to benefit from the transition to a more sustainable global economy, integrating environmental, social and governance (ESG) analysis and ratings into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of MSCI ACWI Index companies.

The Fund utilizes the Impax Sustainability Lens, a proprietary tool designed to facilitate a systematic review of the economic opportunities and risks associated with the transition to a more sustainable economy. The tool highlights sub-industries with transition tailwinds and headwinds, assisting the investment team in identifying companies that the Sub-Adviser believes present attractive opportunities and lower risks.

Under normal market conditions, the Global Opportunities Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in companies that its Adviser or Sub-Adviser believe will benefit from the transition to a more sustainable global economy – the shift away from a depletive economy to one that preserves ecological and societal balance for the benefit of future generations. The Fund seeks to invest in companies with durable business models that are well positioned to benefit from or avoid the risks associated with this transition. Under normal market conditions, the Global Opportunities Fund will invest primarily in equity securities (such as common stocks, preferred stocks and securities convertible into common or preferred stocks) of companies located around the world, including at least 40% of its net assets in securities of companies organized or located outside the United States or doing a substantial amount of business outside the United States, including those located in emerging markets. The Fund’s investments may be diversified across multiple countries or geographic regions, or may be focused on a select geographic region, although the Global Opportunities Fund will normally have investments in a minimum of three countries other than the United States. The Fund’s investments in securities of non-US issuers may be denominated in currencies other than the US dollar. The Adviser and Sub-Adviser currently expect that the Fund typically will hold between 35 and 45 securities positions.

The Global Opportunities Fund’s Sub-Adviser selects equity securities on a company-by-company basis primarily through the use of fundamental analysis. The Global Opportunities Fund is not constrained by any particular investment style, and may therefore invest in “growth” stocks, “value” stocks or a combination of both. Additionally, it may buy stocks in any sector or industry, and it is not limited to investing in securities of a specific market capitalization.

The Global Opportunities Fund seeks to invest in companies with sustainable competitive advantages, track records of consistent returns on investment, and where the Fund’s Sub-Adviser believes a company’s attractive, bottom-up financial characteristics and long-term opportunities are not reflected in its share price.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

●

Equity Securities Risk The market price of equity securities may fluctuate significantly, rapidly and unpredictably, causing the Fund to experience losses. The prices of equity securities generally are more volatile than the prices of debt securities.

●

Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry or other factors including terrorism, war, natural disasters and the spread of infectious disease including epidemics or pandemics such as the COVID-19 outbreak may adversely affect security prices, thereby reducing the value of the Fund’s investments. To the extent the Fund takes significant positions in one or more specific sectors, countries or regions, the Fund will be subject to the risks associated with such sector(s), country(ies) or region(s) to a greater extent than would be a more broadly diversified fund.

●

Non-US Securities Risk Non-US securities may have less liquidity and more volatile prices than domestic securities, which can make it difficult for the Fund to sell such securities at desired times or prices. Non-US markets may differ from US markets in material and adverse ways. For example, securities transaction expenses generally are higher, transaction settlement may be slower, recourse in the event of default may be more limited and taxes and currency exchange controls may limit amounts available for distribution to shareholders. Non-US investments are also subject to the effects of local political, social, diplomatic or economic events.

●

Emerging Markets Risk Investments in emerging markets are likely to have greater exposure to the risks associated with investments in non-US securities generally. Additionally, emerging market countries generally have less mature economies and less developed securities markets with more limited trading activity, are more heavily dependent on international trade and support, have a higher risk of currency devaluation, and may have more volatile inflation rates or longer periods of high inflation than more developed countries.

●

Currency Risk The US dollar value of your investment in the Fund may go down if the value of the local currency of the non-US markets in which the Fund invests depreciates against the US dollar.

●

Focused Portfolio Risk To the extent the Fund invests its assets in a more limited number of issuers than many other mutual funds, a decline in the market value of a particular security may affect the Fund’s value more than if the Fund invested in a larger number of issuers.

●

Turnover Risk Frequent changes in the securities held by the Fund increases the Fund’s transaction costs and may result in adverse tax consequences, which together may adversely affect the Fund’s performance.

●

Growth Securities Risk The values of growth securities may be more sensitive to changes in current or expected earnings than the values of other securities.

●

Value Securities Risk Value securities are securities the investment adviser believes are selling at a price lower than their true value, perhaps due to adverse business developments or special risks. If that belief is wrong or remains unrecognized by the market, the price of the securities may decline or may not appreciate as anticipated.

●

Small- and Medium-Sized Capitalization Company Risk Securities of small- and medium-sized companies may have less liquidity and more volatile prices than securities of larger companies, which can make it difficult for the Fund to sell such securities at desired times or prices.

●

Management Risk The Fund is actively managed. The investment techniques and decisions of the investment adviser and the Fund’s portfolio manager(s), including the investment adviser’s assessment of a company’s ESG profile when selecting investments for the Fund, may not produce the desired results and may adversely impact the Fund’s performance, including relative to other funds that do not consider ESG factors or come to different conclusions regarding such factors.

As with all mutual funds, investors may lose money by investing in the Global Opportunities Fund.

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 118 for more detailed descriptions of the foregoing risks.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart is intended to provide some indication of the risk of investing in the Global Opportunities Fund by showing changes in the Global Opportunities Fund’s performance from year to year

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.impaxam.com

Bar Chart [Heading]

rr_BarChartHeading

Institutional Class

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax performance is presented only for Institutional Class shares of the Fund. After-tax returns for Investor Class shares may vary

1 Year

rr_AverageAnnualReturnYear01

18.54%

^[25],[26]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 27, 2018

^[25],[26]

Prospectus [Line Items]

rr_ProspectusLineItems

Since Inception

rr_AverageAnnualReturnSinceInception

17.74%

^[26],[27]

Trading Symbol

dei_TradingSymbol

PXGOX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.07%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 98

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

579

Annual Return 2019

rr_AnnualReturn2019

33.72%

Annual Return 2021

rr_AnnualReturn2021

18.96%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst quarter

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.11%)

Since Inception

rr_AverageAnnualReturnSinceInception

18.16%

^[28]

1 Year

rr_AverageAnnualReturnYear01

18.19%

^[28]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 27, 2018

^[28]

Prospectus [Line Items]

rr_ProspectusLineItems

Since Inception

rr_AverageAnnualReturnSinceInception

14.22%

^[28]

Trading Symbol

dei_TradingSymbol

PAXGX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.32%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 123

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

713

1 Year

rr_AverageAnnualReturnYear01

18.69%

^[28]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 27, 2018

^[28]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fees & Expenses

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

18.00%

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in Institutional Class, Investor Class or Class A shares of the Global Environmental Markets Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class, Investor Class or Class A shares of the Global Environmental Markets Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the Global Environmental Markets Fund’s operating expenses remain the same throughout those periods. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Global Environmental Markets Fund follows a sustainable investing approach, investing in companies that the Sub-Adviser believes are well positioned to benefit from the transition to a more sustainable global economy, integrating environmental, social and governance (ESG) analysis and ratings into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of MSCI ACWI Index companies.

Under normal market conditions, the Global Environmental Markets Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in companies whose businesses and technologies focus on environmental markets, including alternative energy and energy management & efficiency; transportation solutions; water infrastructure & technologies; environmental services & resources; resource efficiency & waste management; digital infrastructure; and sustainable food & agriculture.

Under normal market conditions, the Global Environmental Markets Fund will invest primarily in equity securities (such as common stocks, preferred stocks and securities convertible into common and preferred stocks) of companies located around the world, including at least 40% of its net assets in securities of non-US issuers, including those located in emerging markets. The Fund’s investments may be diversified across multiple countries or geographic regions, or may be focused on a select geographic region, although the Global Environmental Markets Fund will normally have investments in a minimum of three countries other than the United States. The Fund’s investments in securities of non-US issuers may be denominated in currencies other than the US dollar.

The Global Environmental Markets Fund’s Sub-Adviser selects equity securities on a company-by-company basis primarily through the use of fundamental analysis. The Global Environmental Markets Fund is not constrained by any particular investment style, and may therefore invest in “growth” stocks, “value” stocks or a combination of both. Additionally, it may buy stocks in any sector or industry, and it is not limited to investing in securities of a specific market capitalization.

The Global Environmental Markets Fund seeks to invest in companies with positive overall environmental performance and whose products or services help other companies and countries improve their environmental performance, and seeks to avoid investing in companies with significant environmental problems or worsening environmental profiles.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all mutual funds, investors may lose money by investing in the Global Environmental Markets Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart below presents the calendar year total returns for Investor Class shares of the Global Environmental Markets Fund before taxes. The bar chart is intended to provide some indication of the risk of investing in the Global Environmental Markets Fund by showing changes in the Global Environmental Markets Fund’s performance from year to year. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800.767.1729

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

For the periods shown in the bar chart:	Best quarter: 2nd quarter 2020, 21.90% 6/30/20
	Worst quarter: 1st quarter 2020, -21.54% 3/31/20

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Average Annual Total Returns The performance table below presents the average annual total returns for Investor Class, Class A and Institutional Class shares of the Global Environmental Markets Fund. The performance table is intended to provide some indication of the risks of investment in the Global Environmental Markets Fund by showing how the Global Environmental Markets Fund’s average annual total returns compare with the returns of a broad-based securities market index over a one-year, five-year and ten-year period. After-tax performance is presented only for Investor Class shares of the Fund. After-tax returns for Class A and Institutional Class shares may vary. After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes. Actual after-tax returns will depend on a shareholder’s own tax situation and may differ from those shown. After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts). As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

14.40%

^[29],[30]

1 Year

rr_AverageAnnualReturnYear01

20.46%

^[29],[31]

10 Years

rr_AverageAnnualReturnYear10

15.66%

^[29],[31]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.15%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 117

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

633

Annual Return 2012

rr_AnnualReturn2012

19.27%

Annual Return 2014

rr_AnnualReturn2014

(2.78%)

Annual Return 2016

rr_AnnualReturn2016

10.62%

Annual Return 2018

rr_AnnualReturn2018

(14.31%)

Annual Return 2020

rr_AnnualReturn2020

25.71%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.90%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

1 Year

rr_AverageAnnualReturnYear01

21.95%

^[32]

10 Years

rr_AverageAnnualReturnYear10

13.46%

^[32]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

15.65%

^[32]

1 Year

rr_AverageAnnualReturnYear01

13.27%

^[32]

10 Years

rr_AverageAnnualReturnYear10

11.18%

^[32]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.15%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 661

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,148

1 Year

rr_AverageAnnualReturnYear01

15.16%

^[32],[34]

10 Years

rr_AverageAnnualReturnYear10

12.82%

^[32],[34]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.15%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 92

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

498

1 Year

rr_AverageAnnualReturnYear01

22.23%

^[32]

10 Years

rr_AverageAnnualReturnYear10

13.74%

^[32]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fees & Expenses

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

55.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in Institutional Class or Investor Class shares of the Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class or Investor Class shares of the Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the Fund’s operating expenses remain the same throughout those periods. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The International Sustainable Economy Fund follows a sustainable investing approach, investing in companies that the Adviser believes are well positioned to benefit from the transition to a more sustainable economy, integrating environmental, social and governance (ESG) ratings into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of MSCI EAFE Index companies.

Under normal market conditions, the Fund invests more than 80% of its net assets (plus any borrowings for investment purposes) in large-capitalization equity securities in non-US developed markets, including American Depository Receipts, Global Depository Receipts and Euro Depository Receipts. The Fund may take significant positions in one or more non-US developed markets, including the Asia and Pacific region and the European Union. The Fund’s investments in securities of non-US issuers may be denominated in currencies other than the U.S. dollar.

The Fund employs a systematic investment strategy that integrates proprietary and external tools and metrics in the portfolio construction process. The Fund incorporates the Impax Sustainability Lens, a tool utilized by the Adviser to facilitate a systematic review of the economic opportunities and risks associated with the transition to a more sustainable economy. The tool highlights sub-

industries with transition tailwinds and headwinds, enabling the investment team to construct a portfolio weighted towards companies that the Adviser believes present attractive opportunities and lower risks.

The Fund also utilizes ESG ratings determined by MSCI ESG Research. MSCI ESG Research evaluates companies’ ESG characteristics and derives corresponding ESG scores and ratings. Companies are ranked by ESG score against sector peers to determine their eligibility for the MSCI ESG indices and for the Fund. The rating system is based on general and industry-specific ESG criteria, assigning ratings on a 9-point scale from AAA (highest) to C (lowest). ESG research or ratings provided by MSCI ESG Research might reflect assessments that differ from those the Adviser would make.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same. The Fund also utilizes an investment approach we call SmartCarbon™, wherein fossil fuel holdings are replaced with energy efficiency stocks. This approach is described more fully below under Sustainable Investing in the About the Funds section of this Prospectus.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all mutual funds, investors may lose money by investing in the International Sustainable Economy Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Prior to March 31, 2021, Pax International Sustainable Economy Fund was known as Pax MSCI EAFE ESG Leaders Index Fund (the “EAFE ESG Index Fund”) and the strategy of the Fund differed from its current strategy. Accordingly, performance of the Fund for periods prior to March 31, 2021 may not be representative of the performance the Fund would have achieved had the Fund been following its current strategy. Effective March 31, 2014, the EAFE ESG Index Fund acquired the assets of Pax World International Fund, a series of Pax World Funds Series Trust I, and of Pax MSCI EAFE ESG Index ETF, a series of Pax World Funds Trust II, pursuant to an Agreement and Plan of Reorganization dated December 13, 2013 (the “Reorganizations”). Because the EAFE ESG Index Fund had no investment operations prior to the closing of the Reorganizations, and based on the similarity of the EAFE ESG Index Fund to Pax MSCI EAFE ESG Index ETF, Pax MSCI EAFE ESG Index ETF (the “Predecessor Fund”) is treated as the survivor of the Reorganizations for accounting and performance reporting purposes. Accordingly, all performance and other information shown for the International Sustainable Economy Fund for periods prior to March 31, 2014 is that of the Predecessor Fund.

The bar chart below presents the calendar year total returns for Institutional Class shares of the International Sustainable Economy Fund before taxes. The bar chart is intended to provide some indication of the risk of investing in the International Sustainable Economy Fund by showing changes in the International Sustainable Economy Fund’s performance from year to year. All performance information shown for the International Sustainable Economy Fund for periods

prior to March 31, 2014 is that of the Predecessor Fund. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800.767.1729

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

For the periods shown in the bar chart:	Best quarter: 2nd quarter 2020, 16.74% 6/30/20
	Worst quarter: 1st quarter 2020, -21.20% 3/31/20

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns may not be relevant to investors who hold shares of the Fund through tax-advantaged arrangements (such as 401(k) plans or individual retirement accounts).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Average Annual Total Returns The performance table below presents the average annual total returns for Institutional Class and Investor Class shares of the Fund. The performance table is intended to provide some indication of the risk of investing in the Fund by showing how the Fund’s average annual total returns compare with the returns of a broad-based securities market index and a performance average of other similar mutual funds, each over a one-year, five-year and ten-year period. All performance information shown for the Fund for periods prior to March 31, 2014 is that of the Predecessor Fund. After-tax performance is presented only for Institutional Class Shares of the Fund. After-tax returns for Investor Class shares would be lower. After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes. Actual after-tax returns will depend on a shareholder’s own tax situation and may differ from those shown. After-tax returns may not be relevant to investors who hold shares of the Fund through tax-advantaged arrangements (such as 401(k) plans or individual retirement accounts). As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

9.55%

^[35],[36]

1 Year

rr_AverageAnnualReturnYear01

12.16%

^[36],[37]

10 Years

rr_AverageAnnualReturnYear10

7.41%

^[36],[37]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.47%

^[38]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.47%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

151

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 591

Annual Return 2013

rr_AnnualReturn2013

24.96%

Annual Return 2015

rr_AnnualReturn2015

1.16%

Annual Return 2017

rr_AnnualReturn2017

23.34%

Annual Return 2019

rr_AnnualReturn2019

23.01%

Annual Return 2021

rr_AnnualReturn2021

11.19%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst quarter

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.20%)

5 Years

rr_AverageAnnualReturnYear05

10.22%

^[39]

1 Year

rr_AverageAnnualReturnYear01

9.41%

^[39]

10 Years

rr_AverageAnnualReturnYear10

7.38%

^[39]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

7.66%

^[39]

Trading Symbol

dei_TradingSymbol

PXINX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 74

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

401

1 Year

rr_AverageAnnualReturnYear01

10.88%

^[39],[40]

10 Years

rr_AverageAnnualReturnYear10

8.10%

^[39],[40]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Expense [Heading]

rr_ExpenseHeading

Fees & Expenses

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

48.00%

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in Institutional Class or Investor Class shares of the Core Bond Fund with the cost of investing in other mutual funds.

The table assumes that an investor invests $10,000 in Institutional Class or Investor Class shares of the Core Bond Fund for the time periods indicated and then redeems all of his or her shares at the end of those periods. The table also

assumes that the investment has a 5% return each year, that all dividends and distributions are reinvested and that the Core Bond Fund’s operating expenses remain the same throughout those periods. Although an investor’s actual expenses may be higher or lower than those shown in the table, based on these assumptions his or her expenses would be:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Core Bond Fund follows a sustainable investing approach, investing in companies and issuers that the Adviser believes are well positioned to benefit from the transition to a more sustainable global economy, integrating environmental, social and governance (ESG) analysis and ratings into portfolio construction and managing the portfolio within certain risk parameters relative to the Fund’s benchmark universe of Bloomberg US Aggregate Bond Index companies. For corporate issuers, the Fund utilizes the Impax Sustainability Lens, a proprietary tool designed to facilitate a systematic review of the economic opportunities and risks associated with the transition to a more sustainable economy. The tool highlights sub-industries with transition tailwinds and headwinds, assisting the investment team in identifying companies that the Adviser believes present attractive opportunities and lower risks.

Under normal market conditions, the Core Bond Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in bonds, which include debt obligations such as mortgage-related securities, securities issued by the United States government or its agencies and instrumentalities, municipal bonds, corporate bonds and high-impact bonds (which provide financing to support solutions to global sustainability challenges) across the spectrum of issuers, each of which is, at the time of purchase, rated at least investment grade (rated BBB- or higher by Standard & Poor’s Ratings Group or Baa3 or higher by Moody’s Investors Service) or unrated and determined by the Adviser to be of comparable quality. The Fund also may have a small allocation of higher-rated high yield bonds, also commonly

known as “junk bonds” (rated B or lower by Standard & Poor’s Ratings Group or Moody’s Investors Service). Although the Fund is not constrained with respect to duration, it seeks to maintain an average duration within .50 years of the duration of the Bloomberg US Aggregate Bond Index, which had a duration of 6.72 years as of December 31, 2021.

In determining which securities to buy for the Core Bond Fund, the portfolio manager seeks to determine the most attractive asset class and establish if each security’s return is appropriate for its level of risk. In making these determinations, the portfolio manager generally performs a relative value analysis at the asset class level.

The Core Bond Fund may invest up to 45% of its assets in securities of non-US issuers, including emerging market investments.

Under normal market conditions, and as a result of the Adviser’s focus on risks and opportunities accompanying the transition to a more sustainable economy, the Fund is fossil fuel-free - not invested in securities of companies that the Adviser determines derive revenues or profits from exploration, production, refining or processing of thermal coal, oil or gas, or significant (generally more than 5%) revenues or profits from storage, distribution or power generation from the same.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

●

Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry or other factors including terrorism, war, natural disasters and the spread of infectious disease including epidemics or pandemics such as the COVID-19 outbreak may adversely affect security prices, thereby reducing the value of the Fund’s investments. To the extent the Fund takes significant positions in one or more specific sectors, countries or regions, the Fund will be subject to the risks associated with such sector(s), country(ies) or region(s) to a greater extent than would be a more broadly diversified fund.

●

Non-US Securities Risk Non-US securities may have less liquidity and more volatile prices than domestic securities, which can make it difficult for the Fund to sell such securities at desired times or prices. Non-US markets may differ from US markets in material and adverse ways. For example, securities transaction expenses generally are higher, transaction settlement may be slower, recourse in the event of default may be more limited and taxes and currency exchange controls may limit amounts available for distribution to shareholders. Non-US investments are also subject to the effects of local political, social, diplomatic or economic events.

●

Interest Rate Risk The value of debt securities tends to decrease when nominal interest rates rise. Longer-duration securities tend to be more sensitive to interest rate changes, and thus more volatile, than shorter-

duration securities. As of the date of this prospectus, interest rates are low by historic standards, and an increase in interest rates could decrease the price of debt securities held by the Fund and negatively impact its performance. For example, if a debt security has a duration of four years, a 1% increase in interest rates could be expected to result in a 4% decrease in the value of the security.

●

Liquidity Risk Liquidity risk is the risk associated with a lack of marketability of investments, which may make it difficult to sell an investment at a desirable time or price. A lack of liquidity may cause the value of an investment to decline. Liquidity risk also may refer to the risk that the Fund could not meet requests to redeem shares of the Fund without significant dilution of remaining investors’ interests in the Fund.

●

Credit Risk Changing economic conditions may adversely affect an obligated entity’s actual or perceived ability to pay interest or principal on a fixed income security when due, which in turn can adversely affect the price of or income derived from the security.

●

Management Risk The Fund is actively managed. The investment techniques and decisions of the investment adviser and the Fund’s portfolio manager(s), including the investment adviser’s assessment of a company’s ESG profile when selecting investments for the Fund, may not produce the desired results and may adversely impact the Fund’s performance, including relative to other funds that do not consider ESG factors or come to different conclusions regarding such factors.

●

US Government Securities Risk US government securities that are not issued or guaranteed by the US Treasury are generally more susceptible to loss than are securities that are so issued or guaranteed.

●

Mortgage Risk Mortgage related securities tend to become more sensitive to interest rate changes as interest rates rise, increasing their volatility. When interest rates decline, underlying borrowers may pay off their loans sooner than expected, forcing the Fund to reinvest disposition proceeds at lower prevailing interest rates.

●

Reinvestment Risk Income from the Fund’s investments may decline if the Fund is forced to invest the proceeds from matured, called or otherwise disposed of debt securities or convertible securities at interest rates that are below the Fund’s earnings rate at that time.

●

Emerging Markets Risk Investments in emerging markets are likely to have greater exposure to the risks associated with investments in non-US securities generally. Additionally, emerging market countries generally have less mature economies and less developed securities markets with more limited trading activity, are more heavily dependent on international trade

and support, have a higher risk of currency devaluation, and may have more volatile inflation rates or longer periods of high inflation than more developed countries.

●

High Yield Securities Risk High yield securities (“junk bonds”) are considered predominately speculative with respect to the issuer’s continuing ability to make principal and interest payments when due. Investments in such securities tend to increase the Fund’s exposure to interest rate risk, credit risk and liquidity risk.

●

Turnover Risk Frequent changes in the securities held by the Fund increases the Fund’s transaction costs and may result in adverse tax consequences, which together may adversely affect the Fund’s performance.

As with all mutual funds, investors may lose money by investing in the Core Bond Fund.

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 118 for more detailed descriptions of the foregoing risks.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart is intended to provide some indication of the risk of investing in the Core Bond Fund by showing changes in the Core Bond Fund’s performance from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.impaxam.com

Bar Chart [Heading]

rr_BarChartHeading

Institutional Class

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax performance is presented only for Institutional Class shares of the Fund. After-tax returns for Investor Class shares may vary.

1 Year

rr_AverageAnnualReturnYear01

(1.54%)

^[41],[42]

Since Inception

rr_AverageAnnualReturnSinceInception

3.77%

^[41],[42]

1 Year

rr_AverageAnnualReturnYear01

(1.17%)

^[42],[43]

Since Inception

rr_AverageAnnualReturnSinceInception

4.13%

^[42],[43]

Trading Symbol

dei_TradingSymbol

PXBIX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.46%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

148

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 579

Annual Return 2018

rr_AnnualReturn2018

(0.01%)

Annual Return 2020

rr_AnnualReturn2020

7.16%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.41%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2021

1 Year

rr_AverageAnnualReturnYear01

(1.38%)

^[44]

Since Inception

rr_AverageAnnualReturnSinceInception

3.42%

^[44]

1 Year

rr_AverageAnnualReturnYear01

(2.15%)

^[44]

Since Inception

rr_AverageAnnualReturnSinceInception

2.27%

^[44]

1 Year

rr_AverageAnnualReturnYear01

(0.79%)

^[44]

Since Inception

rr_AverageAnnualReturnSinceInception

2.15%

^[44]

Trading Symbol

dei_TradingSymbol

PAXBX

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.71%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

227

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 883

5 Years

rr_AverageAnnualReturnYear05

3.00%

^[41],[44]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 16, 2016

^[41],[44]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objectives

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

As a secondary investment objective, the High Yield Bond Fund seeks capital appreciation.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy, hold, and sell Institutional Class, Investor Class or Class A shares of the High Yield Bond 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. You may qualify for sales charge discounts for Class A shares if you and your spouse or minor children invest, or agree to invest in the future, at least $50,000 in Class A shares of the High Yield Bond Fund. More information about these and other discounts is available from your financial intermediary, under “Shareholder Guide—Sales Charges” on page 146 of this Prospectus and under “Distribution and Shareholder Services—Sales Charge Reductions and Waivers” on page 108 in the Statement of Additional Information. Investors investing in the High Yield Bond Fund through an intermediary should consult Appendix A to this Prospectus, which includes information regarding financial intermediary specific sales charges and related discount policies that apply to purchases through certain specified intermediaries.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The 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 shares are held in a taxable account. These transaction costs, which are not reflected in “Annual Fund Operating Expenses” or in the “Example of Expenses,” affect the High Yield Bond Fund’s performance. During the High Yield Bond Fund’s most recent fiscal year, the High Yield Bond Fund’s portfolio turnover rate was 51% of the average value of its portfolio.

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts for Class A shares if you and your spouse or minor children invest, or agree to invest in the future, at least $50,000 in Class A shares of the High Yield Bond Fund.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example of Expenses

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Lose Money [Text]

rr_RiskLoseMoney

As with all mutual funds, investors may lose money by investing in the High Yield Bond Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart below presents the calendar year total returns for Investor Class shares of the High Yield Bond Fund before taxes. The bar chart is intended to provide some indication of the risk of investing in the High Yield Bond Fund by showing changes in the High Yield Bond Fund’s performance from year to year. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800.767.1729

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

For the periods shown in the bar chart:	Best quarter: 2nd quarter 2020, 8.66% 6/30/20
	Worst quarter: 1st quarter 2020, -9.50% 3/31/20

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Average Annual Total Returns The performance table below presents the average annual total returns for Investor Class, Class A and Institutional Class shares of the High Yield Bond Fund. The performance table is intended to provide some indication of the risks of investment in the High Yield Bond Fund by showing how the High Yield Bond Fund’s average annual total returns compare with the returns of a broad-based securities market index and a performance average of other similar mutual funds, each over a one-year, five-year and ten-year period. After-tax performance is presented only for Investor Class shares for the Fund. After-tax returns for Class A and Institutional Class shares may vary. After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes. Actual after-tax returns will depend on a shareholder’s own tax situation and may differ from those shown. After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts). As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

6.04%

^[45],[46]

1 Year

rr_AverageAnnualReturnYear01

5.85%

^[46],[47]

10 Years

rr_AverageAnnualReturnYear10

6.24%

^[46],[47]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.50%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.18%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 95

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

515

Annual Return 2012

rr_AnnualReturn2012

13.41%

Annual Return 2014

rr_AnnualReturn2014

(1.41%)

Annual Return 2016

rr_AnnualReturn2016

13.81%

Annual Return 2018

rr_AnnualReturn2018

(3.07%)

Annual Return 2020

rr_AnnualReturn2020

7.80%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best quarter

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

8.66%

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

1 Year

rr_AverageAnnualReturnYear01

2.96%

^[48]

10 Years

rr_AverageAnnualReturnYear10

5.28%

^[48]

Prospectus [Line Items]

rr_ProspectusLineItems

5 Years

rr_AverageAnnualReturnYear05

3.42%

^[48]

1 Year

rr_AverageAnnualReturnYear01

1.73%

^[48]

10 Years

rr_AverageAnnualReturnYear10

2.99%

^[48]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.50%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.50%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.18%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 541

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

942

1 Year

rr_AverageAnnualReturnYear01

(1.55%)

^[48],[50]

10 Years

rr_AverageAnnualReturnYear10

4.83%

^[48],[50]

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.50%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.19%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 70

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

384

1 Year

rr_AverageAnnualReturnYear01

3.36%

^[48]

10 Years

rr_AverageAnnualReturnYear10

5.56%

^[48]

Prospectus [Line Items]

rr_ProspectusLineItems

Objective [Heading]

rr_ObjectiveHeading

Investment Objectives

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

As a secondary investment objective, the Sustainable Allocation Fund seeks long-term growth of capital.

Expense Narrative [Text Block]

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The tables below describe the fees and expenses that you may pay if you buy, hold, and sell Institutional Class or Investor Class shares of the Sustainable Allocation 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.

Operating Expenses Caption [Text]

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

Portfolio Turnover [Text Block]

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The 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 shares are held in a taxable account. These transaction costs, which are not reflected in “Annual Fund Operating Expenses” or in the “Example of Expenses,” affect the Sustainable Allocation Fund’s performance. During the Sustainable Allocation Fund’s most recent fiscal year, the Sustainable Allocation Fund’s portfolio turnover rate was 4% of the average value of its portfolio.

Expense Example [Heading]

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Example of Expenses

Strategy [Heading]

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Principal Investment Strategies

Risk [Heading]

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Principal Risks

Risk Lose Money [Text]

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As with all mutual funds, investors may lose money by investing in the Sustainable Allocation Fund.

Performance Narrative [Text Block]

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The bar chart below presents the calendar year total returns for Investor Class shares of the Sustainable Allocation Fund before taxes. The bar chart is intended to provide some indication of the risk of investing in the Sustainable Allocation Fund by showing changes in the Sustainable Allocation Fund’s performance from year to year. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Performance Availability Phone [Text]

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800.767.1729

Performance Past Does Not Indicate Future [Text]

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As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.

Bar Chart Closing [Text Block]

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For the periods shown in the bar chart:	Best quarter: 2nd quarter 2020, 12.96% 6/30/20
	Worst quarter: 1st quarter 2020, -10.79% 3/31/20

Performance Table Not Relevant to Tax Deferred

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After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts).

Performance Table Narrative

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Average Annual Total Returns The performance table below presents the average annual total returns for Investor Class and Institutional Class shares of the Sustainable Allocation Fund. The performance table is intended to provide some indication of the risks of investment in the Sustainable Allocation Fund by showing how the Sustainable Allocation Fund’s average annual total returns compare with the returns of a broad-based securities market index and a performance average of other similar mutual funds, each over a one-year, five-year and ten-year period. After-tax performance is presented only for Investor Class shares of the Fund. After-tax returns for Institutional Class shares may vary. After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the effect of local, state or foreign taxes. Actual after-tax returns will depend on a shareholder’s own tax situation and may differ from those shown. After-tax returns may not be relevant to shareholders who hold their shares through tax-advantaged arrangements (such as 401(k) plans and individual retirement accounts). As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.