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Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Document Type dei_DocumentType 497
Document Period End Date dei_DocumentPeriodEndDate Dec. 31, 2017
Registrant Name dei_EntityRegistrantName PAX WORLD FUNDS SERIES TRUST I
Central Index Key dei_EntityCentralIndexKey 0000076721
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Jun. 29, 2018
Document Effective Date dei_DocumentEffectiveDate Jun. 29, 2018
Prospectus Date rr_ProspectusDate May 01, 2018
Pax Small Cap Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Pax Small Cap Fund

 

(the “Small Cap Fund”)

 

Summary of Key Information

Objective [Heading] rr_ObjectiveHeading

Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Small Cap Fund’s investment objective is to seek long-term growth of capital.
Expense [Heading] rr_ExpenseHeading

Fees & Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy and hold Institutional Class, Investor Class or Class A shares of the Small Cap Fund. 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 Small Cap Fund. More information about these and other discounts is available from your financial intermediary, under “Shareholder Guide—Sales Charges” on page 97 of this Prospectus and under “Distribution and Shareholder Services—Sales Charge Reductions and Waivers” on page 110 in the Statement of Additional Information. “Investors investing in the [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.”
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption

 Annual Fund Operating Expenses

(expenses you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading

Portfolio Turnover
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 Small Cap Fund’s performance. During the Small Cap Fund’s most recent fiscal year, the Small Cap Fund’s portfolio turnover rate was 56% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 56.00%
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 Small Cap Fund.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading

Example of Expenses
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 [Heading] rr_StrategyHeading

Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Small Cap Fund follows a sustainable investing approach, combining rigorous financial analysis with equally rigorous environmental, social and governance (ESG) analysis in order to identify investments.

 

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, 2017, the Russell 2000 Index included companies with market capitalizations from approximately $4 million to $9.5 billion.

 

The Small Cap Fund selects equity securities on a company-by-company basis primarily through the use of fundamental analysis. The portfolio manager may overweight or underweight specific sectors and may take significant positions, including positions in companies in the financial services sector, which could lead to increased volatility. 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. Additionally, 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-U.S. issuers, including American Depositary Receipts (“ADRs”). The Small Cap Fund may invest no more than 25% of its assets in securities of non-U.S. issuers other than ADRs. The Small Cap Fund’s investments in securities of non-U.S. issuers, if any, may be diversified across multiple countries or geographic regions, or may be focused in a single country or geographic region.

 

The Small Cap Fund may utilize derivatives for hedging and for investment purposes.

 

It is possible that, as a result of its investment strategies, the portfolio turnover rate of the Small Cap Fund may be significant. Portfolio turnover is not a principal consideration in investment decisions for the Fund, and the Fund is not subject to any limit on the frequency with which portfolio securities may be purchased or sold. 
Risk [Heading] rr_RiskHeading

Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
●Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry 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.

 

●Derivatives Risk Derivatives involve special risks and may result in losses. The values of derivatives can be very volatile, especially in unusual market conditions, and that volatility can be exacerbated by the use of leverage, which is common for derivative strategies. Derivatives may be illiquid, and may also be subject to the risk of nonperformance by a transaction counterparty. The Fund may not be able to enter into, or terminate, a derivatives position when desired. Derivatives also may be subject to mispricing and improper valuation, and may increase the amount of taxes payable by shareholders.

 

●Non-U.S. Securities Risk Non-U.S. 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-U.S. markets may differ from U.S. 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-U.S. investments are also subject to the effects of local political, social, diplomatic or economic events.

 

●Turnover Risk Frequent changes in the securities held by a 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 Growth securities typically trade at higher multiples of current earnings than other securities. Therefore, 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 and unstable interest rates. Such companies may have concentrated portfolios, such as a high level of loans to real estate developers, 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. Companies in the financial services sector are subject to extensive governmental regulation that may limit the amount and types of loans and other financial commitments they can make, and interest rates and fees that they may charge. In addition, profitability of such companies is largely dependent upon the availability and the cost of capital.

 

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 78 for more detailed descriptions of the foregoing risks.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, investors may lose money by investing in the Small Cap Fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

Performance Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart below presents the calendar year total returns for Investor Class shares of the Small Cap Fund before taxes. 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. As with all mutual funds, past performance (before and after taxes) is not necessarily an indication of future performance.
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 Phone [Text] rr_PerformanceAvailabilityPhone 800.767.1729
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paxworld.com
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 [Heading] rr_BarChartHeading

Investor Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
For the periods shown in the bar chart: Best quarter: 2nd quarter 2009, 19.79%
  Worst quarter: 3rd quarter 2011, -21.71%
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 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 One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Investor Class shares of the Fund.
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 Small Cap Fund. The performance table is intended to provide some indication of the risks of investment in the Small Cap Fund by showing how the Small Cap 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 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.
Pax Small Cap Fund | Institutional Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXSIX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.20%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.95%
One Year rr_ExpenseExampleYear01 $ 97
Three Years rr_ExpenseExampleYear03 303
Five Years rr_ExpenseExampleYear05 525
Ten Years rr_ExpenseExampleYear10 $ 1,166
1 Year rr_AverageAnnualReturnYear01 9.10% [1]
5 Years rr_AverageAnnualReturnYear05 13.89% [1]
Since Inception rr_AverageAnnualReturnSinceInception 10.17% [1]
Pax Small Cap Fund | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXSCX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.19%
One Year rr_ExpenseExampleYear01 $ 121
Three Years rr_ExpenseExampleYear03 378
Five Years rr_ExpenseExampleYear05 654
Ten Years rr_ExpenseExampleYear10 $ 1,443
Annual Return 2009 rr_AnnualReturn2009 37.02%
Annual Return 2010 rr_AnnualReturn2010 30.17%
Annual Return 2011 rr_AnnualReturn2011 (3.50%)
Annual Return 2012 rr_AnnualReturn2012 13.55%
Annual Return 2013 rr_AnnualReturn2013 43.24%
Annual Return 2014 rr_AnnualReturn2014 7.06%
Annual Return 2015 rr_AnnualReturn2015 (3.85%)
Annual Return 2016 rr_AnnualReturn2016 17.90%
Annual Return 2017 rr_AnnualReturn2017 8.77%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 19.79%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (21.71%)
1 Year rr_AverageAnnualReturnYear01 8.77% [1]
5 Years rr_AverageAnnualReturnYear05 13.59% [1]
Since Inception rr_AverageAnnualReturnSinceInception 9.88% [1]
Pax Small Cap Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXSAX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [2]
Management Fee rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.19%
One Year rr_ExpenseExampleYear01 $ 665
Three Years rr_ExpenseExampleYear03 907
Five Years rr_ExpenseExampleYear05 1,168
Ten Years rr_ExpenseExampleYear10 $ 1,914
1 Year rr_AverageAnnualReturnYear01 2.82% [1],[3]
5 Years rr_AverageAnnualReturnYear05 12.31% [1],[3]
Since Inception rr_AverageAnnualReturnSinceInception 9.25% [1],[3]
Pax Small Cap Fund | After Taxes on Distributions | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.11% [1]
5 Years rr_AverageAnnualReturnYear05 12.28% [1]
Since Inception rr_AverageAnnualReturnSinceInception 8.68% [1]
Pax Small Cap Fund | After Taxes on Distributions and Sales | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 5.06% [1]
5 Years rr_AverageAnnualReturnYear05 10.46% [1]
Since Inception rr_AverageAnnualReturnSinceInception 7.69% [1]
Pax Small Cap Fund | Russell 2000 Index (reflects no deduction for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 14.65% [4],[5]
5 Years rr_AverageAnnualReturnYear05 14.12% [4],[5]
Since Inception rr_AverageAnnualReturnSinceInception 10.03% [4],[5]
Pax Small Cap Fund | Lipper Small-Cap Core Funds Index  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 13.95% [5],[6]
5 Years rr_AverageAnnualReturnYear05 13.64% [5],[6]
Since Inception rr_AverageAnnualReturnSinceInception 9.95% [5],[6]
PAX ESG Beta Quality Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Pax ESG Beta Quality Fund

 

(the “ESG Beta Quality Fund”)

 

Summary of Key Information

Objective [Heading] rr_ObjectiveHeading

Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The ESG Beta Quality Fund’s investment objective is to seek long-term growth of capital.
Expense [Heading] rr_ExpenseHeading

Fees & Expenses

Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy and hold Institutional Class, Investor Class or Class A shares of the ESG Beta Quality Fund. 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 ESG Beta Quality Fund. More information about these and other discounts is available from your financial intermediary, under “Shareholder Guide—Sales Charges” on page 97 of this Prospectus and under “Distribution and Shareholder Services—Sales Charge Reductions and Waivers” on page 110 in the Statement of Additional Information. “Investors investing in the [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.”
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption

 Annual Fund Operating Expenses

(expenses you pay each year as a percentage of the value of your investment): 
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading

Portfolio Turnover
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 ESG Beta Quality Fund’s performance. During the ESG Beta Quality Fund’s most recent fiscal year, the ESG Beta Quality Fund’s portfolio turnover rate was 36% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 36.00%
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 ESG Beta Quality Fund.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading

Example of Expenses
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 ESG Beta Quality 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 ESG Beta Quality 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 ESG Beta Quality 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 [Heading] rr_StrategyHeading

Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The ESG Beta Quality Fund follows a sustainable investing approach, combining rigorous financial analysis with equally rigorous environmental, social and governance (ESG) analysis in order to identify investments.

 

“ESG Beta” is a term indicating that the Fund follows a “smart beta” or factor strategy incorporating ESG along with financial factors in its investment approach. In this type of investing, a portfolio of securities is overweighted toward certain factors in an effort to enhance return and/or reduce risk.

 

Under normal market conditions, the Fund invests primarily in large-capitalization domestic equity securities that the Adviser believes have strong Environmental, Social and Governance (ESG) profiles and that exhibit higher “quality” characteristics and reasonable valuations. Specifically, the strategy favors securities with stronger ESG scores (as determined by the Adviser), higher profitability, higher earnings quality (based on a quantitative assessment of operating fundamentals and accruals), lower risk (i.e., the historic volatility of a security relative to the overall market) and lower valuations relative to the Russell 1000 Index. The portfolio managers may take significant positions in companies in the information technology sector, which could lead to increased volatility.

 

The Adviser utilizes a quantitative process, optimizing ESG, quality factors and valuation factors relative to benchmark constraints.

 

ESG scores are calculated based on the Adviser’s assessment of an issuer’s ESG profile. The scores emphasize management of ESG-related risks, incorporate ESG trends (taking into account progress or regression in a company’s ESG profile) and adjust for involvement in significant ESG-related controversies.

 

Quality factors include but are not limited to quantitative determinations of profitability, earnings quality and risk. Valuation is determined by considering a combination of earnings-based valuation measures.

 

The Fund may invest a portion of its assets in securities of non-U.S. issuers, including emerging market investments and American Depositary Receipts (“ADRs”), but may invest no more than 25% of its assets in securities of non-U.S. issuers other than ADRs.

 

The Fund may utilize derivatives for hedging and for investment purposes.
Risk [Heading] rr_RiskHeading

Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
●Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry may adversely affect security prices, thereby reducing the value of the Fund’s investments.

 

●Derivatives Risk Derivatives involve special risks and may result in losses. The values of derivatives can be very volatile, especially in unusual market conditions, and that volatility can be exacerbated by the use of leverage, which is common for derivative strategies. Derivatives may be illiquid, and may also be subject to the risk of nonperformance by a transaction counterparty. The Fund may not be able to enter into, or terminate, a derivatives position when desired. Derivatives also may be subject to mispricing and improper valuation, and may increase the amount of taxes payable by shareholders.

 

●Non-U.S. Securities Risk Non-U.S. 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-U.S. markets may differ from U.S. 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-U.S. investments are also subject to the effects of local political, social, diplomatic or economic events.

 

●Growth Securities Risk Growth securities typically trade at higher multiples of current earnings than other securities. Therefore, the values of growth securities may be more sensitive to changes in current or expected earnings than the values of other securities.

 

●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.

 

●Value Securities Risk The Fund may invest in companies that may not be expected to experience significant earnings growth, but whose securities the investment adviser believes are selling at a price lower than their true value. Companies that issue value securities may have experienced adverse business developments or may be subject to special risks that have caused their securities to be out of favor. If the investment adviser’s assessment of a company’s prospects is wrong, or if the market does not recognize the value of the company, the price of its securities may decline or may not approach the value that the investment adviser anticipates.

 

●Quantitative Models Risk Aperio uses quantitative analyses and models as part of its investment process, and any imperfections, errors, or limitations in those analyses and models could affect the Fund’s performance. By necessity, these analyses and models make simplifying assumptions that limit their efficacy. Models that appear to explain prior market data can fail to predict future market events. Further, the data used in models may be inaccurate or subjective and may not include the most recent information about a company or a security. The Fund also runs the risk that the Adviser’s or Aperio’s assessment of an investment or its attributes may be wrong or that deficiencies in their internal systems or controls will cause losses for the Fund or impair Fund operations.

 

●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-U.S. 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.

 

As with all mutual funds, investors may lose money by investing in the ESG Beta Quality Fund.

 

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 78 for more detailed descriptions of the foregoing risks.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, investors may lose money by investing in the ESG Beta Quality Fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

Performance Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

Effective June 30, 2016, the Pax Growth Fund was renamed the Pax ESG Beta Quality Fund and the strategy of the Fund changed. Accordingly, performance of the Fund for periods prior to June 30, 2016 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 Investor Class shares of the ESG Beta Quality Fund before taxes. The bar chart is intended to provide some indication of the risk of investing in the ESG Beta Quality Fund by showing changes in the ESG Beta Quality 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 Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart is intended to provide some indication of the risk of investing in the ESG Beta Quality Fund by showing changes in the ESG Beta Quality Fund's performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.767.1729
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paxworld.com
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 [Heading] rr_BarChartHeading

Investor Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
For the periods shown in the bar chart: Best quarter: 2nd quarter 2009, 15.98%
  Worst quarter: 4th quarter 2008, -26.10%
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 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 One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Investor Class Shares of the Fund.
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 ESG Beta Quality Fund. The performance table is intended to provide some indication of the risks of investment in the ESG Beta Quality Fund by showing how the ESG Beta Quality 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 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.
PAX ESG Beta Quality Fund | Institutional Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PWGIX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.65% [7]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.65%
One Year rr_ExpenseExampleYear01 $ 66
Three Years rr_ExpenseExampleYear03 208
Five Years rr_ExpenseExampleYear05 362
Ten Years rr_ExpenseExampleYear10 $ 810
1 Year rr_AverageAnnualReturnYear01 22.22% [8],[9]
5 Years rr_AverageAnnualReturnYear05 14.18% [8],[9]
10 Years rr_AverageAnnualReturnYear10 8.00% [8],[9]
PAX ESG Beta Quality Fund | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXWGX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.65% [7]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.90%
One Year rr_ExpenseExampleYear01 $ 92
Three Years rr_ExpenseExampleYear03 287
Five Years rr_ExpenseExampleYear05 498
Ten Years rr_ExpenseExampleYear10 $ 1,108
Annual Return 2008 rr_AnnualReturn2008 (41.52%)
Annual Return 2009 rr_AnnualReturn2009 38.94%
Annual Return 2010 rr_AnnualReturn2010 22.22%
Annual Return 2011 rr_AnnualReturn2011 (2.05%)
Annual Return 2012 rr_AnnualReturn2012 13.08%
Annual Return 2013 rr_AnnualReturn2013 29.61%
Annual Return 2014 rr_AnnualReturn2014 11.66%
Annual Return 2015 rr_AnnualReturn2015 2.20%
Annual Return 2016 rr_AnnualReturn2016 6.26%
Annual Return 2017 rr_AnnualReturn2017 21.89%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 15.98%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (26.10%)
1 Year rr_AverageAnnualReturnYear01 21.89% [9]
5 Years rr_AverageAnnualReturnYear05 13.89% [9]
10 Years rr_AverageAnnualReturnYear10 7.74% [9]
PAX ESG Beta Quality Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXGAX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [2]
Management Fee rr_ManagementFeesOverAssets 0.65% [7]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.90%
One Year rr_ExpenseExampleYear01 $ 637
Three Years rr_ExpenseExampleYear03 821
Five Years rr_ExpenseExampleYear05 1,021
Ten Years rr_ExpenseExampleYear10 $ 1,597
1 Year rr_AverageAnnualReturnYear01 15.26% [3],[9]
5 Years rr_AverageAnnualReturnYear05 12.62% [3],[9]
10 Years rr_AverageAnnualReturnYear10 7.14% [3],[9]
PAX ESG Beta Quality Fund | After Taxes on Distributions | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 20.29% [9]
5 Years rr_AverageAnnualReturnYear05 12.28% [9]
10 Years rr_AverageAnnualReturnYear10 6.94% [9]
PAX ESG Beta Quality Fund | After Taxes on Distributions and Sales | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 13.11% [9]
5 Years rr_AverageAnnualReturnYear05 10.77% [9]
10 Years rr_AverageAnnualReturnYear10 6.11% [9]
PAX ESG Beta Quality Fund | Russell 1000 Index (reflects no deduction for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 21.69% [10],[11]
5 Years rr_AverageAnnualReturnYear05 15.71% [10],[11]
10 Years rr_AverageAnnualReturnYear10 8.59% [10],[11]
PAX ESG Beta Quality Fund | Lipper Multi-Cap Core Funds Index  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 20.54% [11],[12]
5 Years rr_AverageAnnualReturnYear05 14.24% [11],[12]
10 Years rr_AverageAnnualReturnYear10 7.69% [11],[12]
Pax Global Environmental Markets Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Pax Global Environmental Markets Fund

 

(the “Global Environmental Markets Fund”)

 

Summary of Key Information

Objective [Heading] rr_ObjectiveHeading

Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Global Environmental Markets Fund’s investment objective is to seek long term growth of capital by investing in innovative companies around the world whose businesses and technologies focus on environmental markets, including alternative energy and energy efficiency; water infrastructure technologies and pollution control; environmental support services and waste management technologies; and sustainable food, agriculture and forestry.
Expense [Heading] rr_ExpenseHeading

Fees & Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy and hold Institutional Class, Investor Class or Class A shares of the Global Environmental Markets Fund. 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 Global Environmental Markets Fund. More information about these and other discounts is available from your financial intermediary, under “Shareholder Guide—Sales Charges” on page 97 of this Prospectus and under “Distribution and Shareholder Services—Sales Charge Reductions and Waivers” on page 110 in the Statement of Additional Information. “Investors investing in the [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.”
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption

Annual Fund Operating Expenses

(expenses you pay each year as a percentage of the value of your investment):
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2018
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading

Portfolio Turnover
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 Environmental Markets Fund’s performance. During the Global Environmental Markets Fund’s most recent fiscal year, the Global Environmental Markets Fund’s portfolio turnover rate was 18% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 18.00%
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 Global Environmental Markets Fund.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading

Example of Expenses
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. 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 [Heading] rr_StrategyHeading

Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Global Environmental Markets Fund follows a sustainable investing approach, combining rigorous financial analysis with equally rigorous environmental, social and governance (ESG) analysis in order to identify investments.

 

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 efficiency; water infrastructure technologies and pollution control; environmental support services and waste management technologies; and sustainable food, agriculture and forestry. 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-U.S. 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 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 may utilize derivatives for hedging and for investment purposes.

 

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. In addition, as a result of the Fund’s investment strategy, under normal market conditions, the Fund is expected to be fossil fuel-free (not invested in securities of companies that IAM determines are significantly involved in the extraction and/or refining of fossil fuels).

 

It is possible that, as a result of its investment strategies, the portfolio turnover rate of the Global Environmental Markets Fund may be significant. Portfolio turnover is not a principal consideration in investment decisions for the Fund, and the Fund is not subject to any limit on the frequency with which portfolio securities may be purchased or sold.
Risk [Heading] rr_RiskHeading

Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
●Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry may adversely affect security prices, thereby reducing the value of the Fund’s investments.

 

●Derivatives Risk Derivatives involve special risks and may result in losses. The values of derivatives can be very volatile, especially in unusual market conditions, and that volatility can be exacerbated by the use of leverage, which is common for derivative strategies. Derivatives may be illiquid, and may also be subject to the risk of nonperformance by a transaction counterparty. The Fund may not be able to enter into, or terminate, a derivatives position when desired. Derivatives also may be subject to mispricing and improper valuation, and may increase the amount of taxes payable by shareholders.

 

●Non-U.S. Securities Risk Non-U.S. 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-U.S. markets may differ from U.S. 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-U.S. investments are also subject to the effects of local political, social, diplomatic or economic events.

 

●Turnover Risk Frequent changes in the securities held by a 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 Growth securities typically trade at higher multiples of current earnings than other securities. Therefore, 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.

 

●Emerging Markets Risk Investments in emerging markets are likely to have greater exposure to the risks associated with investments in non-U.S. 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.

 

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

 

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 78 for more detailed descriptions of the foregoing risks.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, investors may lose money by investing in the Global Environmental Markets Fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

Performance Information
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 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 Environmental Markets Fund by showing changes in the Global Environmental Markets Fund's performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.767.1729
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paxworld.com
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 [Heading] rr_BarChartHeading

Investor Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
For the periods shown in the bar chart: Best quarter: 2nd quarter 2009, 29.43%
  Worst quarter: 3rd quarter 2011, -21.05%
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 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 One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Investor Class shares of the Fund.
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 since inception 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.
Pax Global Environmental Markets Fund | Institutional Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PGINX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.80%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.22%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.02%
Contractual Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.04%) [13]
Net Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.98%
One Year rr_ExpenseExampleYear01 $ 104
Three Years rr_ExpenseExampleYear03 325
Five Years rr_ExpenseExampleYear05 563
Ten Years rr_ExpenseExampleYear10 $ 1,248
1 Year rr_AverageAnnualReturnYear01 26.79% [14]
5 Years rr_AverageAnnualReturnYear05 12.39% [14]
Since Inception rr_AverageAnnualReturnSinceInception 6.79% [14]
Pax Global Environmental Markets Fund | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PGRNX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.80%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.21%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.26%
Contractual Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [13]
Net Annual Fund Operating Expenses rr_NetExpensesOverAssets 1.23%
One Year rr_ExpenseExampleYear01 $ 128
Three Years rr_ExpenseExampleYear03 400
Five Years rr_ExpenseExampleYear05 692
Ten Years rr_ExpenseExampleYear10 $ 1,523
Annual Return 2009 rr_AnnualReturn2009 37.52%
Annual Return 2010 rr_AnnualReturn2010 11.20%
Annual Return 2011 rr_AnnualReturn2011 (10.39%)
Annual Return 2012 rr_AnnualReturn2012 19.27%
Annual Return 2013 rr_AnnualReturn2013 32.01%
Annual Return 2014 rr_AnnualReturn2014 (2.78%)
Annual Return 2015 rr_AnnualReturn2015 (1.45%)
Annual Return 2016 rr_AnnualReturn2016 10.62%
Annual Return 2017 rr_AnnualReturn2017 26.42%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 29.43%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (21.05%)
1 Year rr_AverageAnnualReturnYear01 26.42% [14]
5 Years rr_AverageAnnualReturnYear05 12.09% [14]
Since Inception rr_AverageAnnualReturnSinceInception 6.52% [14]
Pax Global Environmental Markets Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXEAX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [2]
Management Fee rr_ManagementFeesOverAssets 0.80%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.21%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.26%
Contractual Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.03%) [13]
Net Annual Fund Operating Expenses rr_NetExpensesOverAssets 1.23%
One Year rr_ExpenseExampleYear01 $ 671
Three Years rr_ExpenseExampleYear03 928
Five Years rr_ExpenseExampleYear05 1,204
Ten Years rr_ExpenseExampleYear10 $ 1,989
1 Year rr_AverageAnnualReturnYear01 19.54% [3],[14]
5 Years rr_AverageAnnualReturnYear05 10.83% [3],[14]
Since Inception rr_AverageAnnualReturnSinceInception 5.91% [3],[14]
Pax Global Environmental Markets Fund | After Taxes on Distributions | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 25.43% [14]
5 Years rr_AverageAnnualReturnYear05 11.63% [14]
Since Inception rr_AverageAnnualReturnSinceInception 6.19% [14]
Pax Global Environmental Markets Fund | After Taxes on Distributions and Sales | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 15.69% [14]
5 Years rr_AverageAnnualReturnYear05 9.58% [14]
Since Inception rr_AverageAnnualReturnSinceInception 5.20% [14]
Pax Global Environmental Markets Fund | MSCI ACWI (Net) Index (reflects no deduction for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 23.97% [15],[16]
5 Years rr_AverageAnnualReturnYear05 10.80% [15],[16]
Since Inception rr_AverageAnnualReturnSinceInception 5.77% [15],[16]
Pax Global Environmental Markets Fund | FTSE Environmental Opportunities Index Series (reflects no deduction for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 31.02% [16],[17]
5 Years rr_AverageAnnualReturnYear05 13.65% [16],[17]
Pax High Yield Bond Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

Pax High Yield Bond Fund

 

(the “High Yield Bond Fund”)

 

Summary of Key Information

Objective [Heading] rr_ObjectiveHeading

Investment Objectives
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The High Yield Bond Fund’s primary investment objective is to seek high current income.

Objective, Secondary [Text Block] rr_ObjectiveSecondaryTextBlock

As a secondary investment objective the High Yield Bond Fund seeks capital appreciation.
Expense [Heading] rr_ExpenseHeading

Fees & Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy and hold Institutional Class, Investor Class or Class A shares of the High Yield Bond Fund. 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 97 of this Prospectus and under “Distribution and Shareholder Services—Sales Charge Reductions and Waivers” on page 110 in the Statement of Additional Information. “Investors investing in the [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.”
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (Fees Paid Directly From Your Investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption

Annual Fund Operating Expenses

(expenses you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading

Portfolio Turnover
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 91% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 91.00%
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 Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading

Example of Expenses
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 High Yield Bond 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 High Yield 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 High Yield 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 [Heading] rr_StrategyHeading

Principal Investment Strategies 
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The High Yield Bond Fund follows a sustainable investing approach, combining rigorous financial analysis with equally rigorous environmental, social and governance (ESG) analysis in order to identify investments. 

 

Under normal market conditions, the High Yield Bond Fund invests at least 80% of its assets (plus any borrowings for investment purposes) in high-yield, fixed income securities (such as bonds, notes or debentures) that are rated below BBB- by Standard & Poor’s Ratings Group or below Baa3 by Moody’s Investors Service, similarly rated by another major rating service, or unrated and determined by the High Yield Bond Fund’s investment adviser to be of comparable quality. These fixed income securities are commonly referred to as “junk bonds.” The Fund may invest in securities of any maturity. The High Yield Bond Fund may, on a short-term basis pending longer term investment, invest in exchange traded funds that invest primarily in high-yield securities. The High Yield Bond Fund treats these short-term investments as high-yield, fixed income securities for purposes of its 80% policy. 

 

In determining which securities to buy for the High Yield Bond Fund, the portfolio managers seek to establish if each security’s return is appropriate for its level of risk. 

 

In making this determination, the portfolio managers generally perform fundamental credit analysis. The High Yield Bond Fund may invest up to 40% of its assets in securities of non-U.S. issuers, including investments in emerging markets. 

 

The High Yield Bond Fund may utilize derivatives for hedging and for investment purposes, and may invest in credit default swaps on indices of high-yield securities on a short-term basis (generally less than 90 days) pending longer term investment.

 

It is possible that, as a result of its investment strategies, the portfolio turnover rate of the High Yield Bond Fund may be significant. Portfolio turnover is not a principal consideration in investment decisions for the Fund, and the Fund is not subject to any limit on the frequency with which portfolio securities may be purchased or sold. 
Risk [Heading] rr_RiskHeading

Principal Risks 
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
●Market Risk Conditions in a broad or specialized market, a sector thereof or an individual industry may adversely affect security prices, thereby reducing the value of the Fund’s investments.

 

●Derivatives Risk Derivatives involve special risks and may result in losses. The values of derivatives can be very volatile, especially in unusual market conditions, and that volatility can be exacerbated by the use of leverage, which is common for derivative strategies. Derivatives may be illiquid, and may also be subject to the risk of nonperformance by a transaction counterparty. The Fund may not be able to enter into, or terminate, a derivatives position when desired. Derivatives also may be subject to mispricing and improper valuation, and may increase the amount of taxes payable by shareholders.

 

●Non-U.S. Securities Risk Non-U.S. 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-U.S. markets may differ from U.S. 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-U.S. 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. A period of rising interest rates may negatively affect the Fund’s 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. The Fund may have to lower the selling price, sell other investments, or forego another, more appealing investment opportunity. Changing regulatory and market conditions, including a decline in the number or capacity of financial institutions to make markets in the Fund’s investments, as well as increases in interest rates or credit spreads, may adversely affect the liquidity of the Fund’s investments. Illiquid investments may also be more difficult to value, and judgment plays a larger role in valuing these investments as compared to valuing more liquid investments.

 

●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.

 

●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.

 

●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.

 

●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.

 

●Emerging Markets Risk Investments in emerging markets are likely to have greater exposure to the risks associated with investments in non-U.S. 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.

 

●Turnover Risk Frequent changes in the securities held by a 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 High Yield Bond Fund.

 

The foregoing descriptions are only summaries. Please see “About the Funds—Principal Risks” on page 78 for more detailed descriptions of the foregoing risks.
Risk Lose Money [Text] rr_RiskLoseMoney As with all mutual funds, investors may lose money by investing in the High Yield Bond Fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

Performance Information
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 Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns 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.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.767.1729
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paxworld.com
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 [Heading] rr_BarChartHeading

Investor Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
For the periods shown in the bar chart: Best quarter: 2nd quarter 2009, 11.79%
  Worst quarter: 4th quarter 2008, -17.51%
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 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 One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is presented only for Investor Class shares of the Fund.
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.
Pax High Yield Bond Fund | Institutional Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXHIX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.50%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.24%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.74%
One Year rr_ExpenseExampleYear01 $ 76
Three Years rr_ExpenseExampleYear03 237
Five Years rr_ExpenseExampleYear05 411
Ten Years rr_ExpenseExampleYear10 $ 918
1 Year rr_AverageAnnualReturnYear01 6.64% [18]
5 Years rr_AverageAnnualReturnYear05 4.02% [18]
10 Years rr_AverageAnnualReturnYear10 5.65% [18]
Pax High Yield Bond Fund | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PAXHX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fee rr_ManagementFeesOverAssets 0.50%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.24%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.99%
One Year rr_ExpenseExampleYear01 $ 101
Three Years rr_ExpenseExampleYear03 315
Five Years rr_ExpenseExampleYear05 547
Ten Years rr_ExpenseExampleYear10 $ 1,213
Annual Return 2008 rr_AnnualReturn2008 (20.61%)
Annual Return 2009 rr_AnnualReturn2009 38.70%
Annual Return 2010 rr_AnnualReturn2010 10.35%
Annual Return 2011 rr_AnnualReturn2011 2.00%
Annual Return 2012 rr_AnnualReturn2012 13.41%
Annual Return 2013 rr_AnnualReturn2013 6.91%
Annual Return 2014 rr_AnnualReturn2014 (1.41%)
Annual Return 2015 rr_AnnualReturn2015 (5.74%)
Annual Return 2016 rr_AnnualReturn2016 13.81%
Annual Return 2017 rr_AnnualReturn2017 6.37%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 11.79%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (17.51%)
1 Year rr_AverageAnnualReturnYear01 6.37% [18]
5 Years rr_AverageAnnualReturnYear05 3.76% [18]
10 Years rr_AverageAnnualReturnYear10 5.39% [18]
Pax High Yield Bond Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol PXHAX
Maximum sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [2]
Management Fee rr_ManagementFeesOverAssets 0.50%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.24%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.99%
One Year rr_ExpenseExampleYear01 $ 546
Three Years rr_ExpenseExampleYear03 751
Five Years rr_ExpenseExampleYear05 972
Ten Years rr_ExpenseExampleYear10 $ 1,608
1 Year rr_AverageAnnualReturnYear01 1.53% [3],[18]
5 Years rr_AverageAnnualReturnYear05 2.85% [3],[18]
10 Years rr_AverageAnnualReturnYear10 4.92% [3],[18]
Pax High Yield Bond Fund | After Taxes on Distributions | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 4.02% [18]
5 Years rr_AverageAnnualReturnYear05 1.20% [18]
10 Years rr_AverageAnnualReturnYear10 2.54% [18]
Pax High Yield Bond Fund | After Taxes on Distributions and Sales | Investor Class  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 3.58% [18]
5 Years rr_AverageAnnualReturnYear05 1.67% [18]
10 Years rr_AverageAnnualReturnYear10 2.96% [18]
Pax High Yield Bond Fund | ICE BofA Merrill Lynch U.S. High Yield BB-B (Constrained 2%) Index (reflects no deduction for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 6.98% [19],[20]
5 Years rr_AverageAnnualReturnYear05 5.58% [19],[20]
10 Years rr_AverageAnnualReturnYear10 7.33% [19],[20]
Pax High Yield Bond Fund | Lipper High Yield Bond Funds Index  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.53% [20],[21]
5 Years rr_AverageAnnualReturnYear05 5.22% [20],[21]
10 Years rr_AverageAnnualReturnYear10 6.47% [20],[21]
[1] The Fund's inception date is March 27, 2008. The Fund's investment adviser assumed certain expenses during the 5-year and since-inception periods; total returns would have been lower had these expenses not been assumed. For more recent month-end performance data, please visit www.paxworld.com or call us at 800.767.1729.
[2] This charge applies to investors who purchase $1 million or more of Class A shares without an initial sales charge and redeem them within 18 months of purchase, with certain exceptions. See "Shareholder Guide-Sales Charges."
[3] Inception of Class A shares is May 1, 2013. The performance information shown for Class A shares includes the performance of Investor Class shares, adjusted to reflect the sales charge applicable to Class A shares, for the period prior to Class A inception.
[4] The Russell 2000 Index measures the performance of the small-cap segment of the U.S. equity universe. The Russell 2000 Index is a subset of the Russell 3000 Index representing approximately 10% of the total market capitalization of that index. It includes approximately 2000 of the smallest securities based on a combination of their market cap and current index membership.
[5] Unlike the Small Cap Fund, the Russell 2000 Index and the Lipper Small-Cap Core Funds Index are not investments, are not professionally managed and have no policy of sustainable investing. One cannot invest directly in any index.
[6] The Lipper Small-Cap Core Funds Index tracks the results of the 30 largest mutual funds in the Lipper Small Cap Core Funds Average. The Lipper Small-Cap Core Funds Average is a total return performance average of the mutual funds tracked by Lipper, Inc. that, by portfolio practice, invest at least 75% of their equity assets in companies with market capitalizations (on a three-year weighted basis) below Lipper's USDE small-cap ceiling. Small-cap core funds have more latitude in the small-cap companies in which they invest. These funds typically have characteristics (i.e., price-to-earnings ratio, price-to-book ratio) that resemble the "average" of the common stocks of the S&P SmallCap 600 Index. The Lipper Small-Cap Core Funds Index is not what is typically considered to be an "index" because it tracks the performance of other mutual funds rather than the changes in the value of a group of securities, a securities index or some other traditional economic indicator. The Lipper Small-Cap Core Funds Index reflects deductions for fees and expenses of the constituent funds.
[7] The management fee is a unified fee that includes all of the operating costs and expenses of the Fund (other than taxes, charges of governmental agencies, interest, brokerage commissions incurred in connection with portfolio transactions, distribution and/or service fees payable under a plan pursuant to Rule 12b-1 under the Investment Company Act of 1940, acquired fund fees and expenses and extraordinary expenses), including accounting expenses, administrator, transfer agent and custodian fees, Fund legal fees and other expenses.
[8] Inception of Institutional Class shares is April 2, 2007. The performance information shown for Institutional Class shares includes the performance of Investor Class shares for the period prior to Institutional Class inception. Expenses have not been adjusted to reflect the expenses allocable to Institutional Class shares. If such expenses were reflected, the returns would be higher than those shown.
[9] The Fund's investment adviser assumed certain expenses during the 5- and 10-year periods; total returns would have been lower had these expenses not been assumed. For more recent month-end performance data, please visit www.paxworld.com or call 800.767.1729.
[10] The Russell 1000 Index measures the performance of the 1,000 largest U.S. companies, as measured by market capitalization. It is a subset of the Russell 3000 Index, which measures the largest 3,000 companies. The Russell 1000 Index is comprised of over 90% of the total market capitalization of all listed U.S. stocks.
[11] Unlike the ESG Beta Quality Fund, the Russell 1000 Index and the Lipper Multi-Cap Core Funds Index are not investments, are not professionally managed and have no policy of sustainable investing. One cannot invest directly in any index.
[12] The Lipper Multi-Cap Core Funds Index tracks the results of the 30 largest mutual funds in the Lipper Multi-Cap Core Funds Index Average. The Lipper Multi-Cap Core Funds Index Average is a total return performance average of mutual funds tracked by Lipper, Inc. that invest in a variety of market capitalization ranges without concentrating 75% of their equity assets in any one market capitalization range over an extended period of time. These funds typically have characteristics (i.e., price-to-earnings ratio, price-to-book ratio) that resemble the "average" of the common stocks of the S&P SuperComposite 1500 Index. The Lipper Multi-Cap Core Funds Index is not what is typically considered to be an "index" because it tracks the performance of other mutual funds rather than the changes in the value of a group of securities, a securities index, or some other traditional economic indicator. The Lipper Multi-Cap Core Funds Index reflects deductions for fees and expenses of the constituent funds.
[13] The Global Environmental Markets Fund's investment adviser has contractually agreed to reimburse expenses (other than interest, commissions, taxes, extraordinary expenses and Acquired Fund Fees and Expenses, if any) allocable to Institutional Class, Investor Class and Class A shares of the Global Environmental Markets Fund to the extent such expenses exceed 0.98%, 1.23% and 1.23% of the average daily net assets of Institutional Class, Investor Class and Class A shares, respectively. This reimbursement arrangement may not be amended or terminated without the approval of the Fund's Board of Trustees before December 31, 2018.
[14] The Fund's inception date is March 27, 2008. The Fund's investment adviser assumed certain expenses during each period shown; total returns would have been lower had these expenses not been assumed. For more recent month-end performance data, please visit www.paxworld.com or call us at 800.767.1729.
[15] The MSCI AC World (Net) Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets. The MSCI AC World consists of 46 country indexes comprising 23 developed and 23 emerging market country indexes. The developed market country indexes included are: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, United Kingdom and the United States. The emerging market country indexes included are: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Pakistan, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates. Performance for the MSCI ACWI Index is shown "net," which includes dividend reinvestments after deduction of foreign withholding tax.
[16] Unlike the Global Environmental Markets Fund, the MSCI AC World (Net) Index and the FTSE Environmental Opportunities Index Series are not investments, are not professionally managed and have no policy of sustainable investing. One cannot invest directly in any index.
[17] The FTSE Environmental Opportunities Index Series measures the performance of global companies that have significant involvement in environmental business activities, including renewable and alternative energy, energy efficiency, water technology; waste and pollution control; and food, agriculture and forestry. The FTSE Environmental Opportunities Index Series requires companies to have at least 20% of their business derived from environmental markets and technologies. The FTSE Environmental Opportunities Index Series is published by a joint venture of FTSE International and Impax Asset Management, Ltd. Impax Asset Management Ltd. is the sub-adviser to the Pax Global Environmental Markets Fund.
[18] The Fund's investment adviser assumed certain expenses during the 10-year period; total returns would have been lower had these expenses not been assumed. For more recent month-end performance data, please visit www.paxworld.com or call 800.767.1729.
[19] The ICE BofA Merrill Lynch U.S. High Yield-Cash Pay-BB-B (Constrained 2%) Index tracks the performance of BB- and B-rated fixed income securities publicly issued in the major domestic or eurobond markets, with total index allocation to an individual issuer limited to 2%.
[20] Unlike the High Yield Bond Fund, the ICE BofA Merrill Lynch U.S. High Yield-Cash Pay-BB-B (Constrained 2%) Index and the Lipper High Yield Bond Funds Index are not investments, are not professionally managed and have no policy of sustainable investing. One cannot invest directly in any index.
[21] The Lipper High Yield Bond Funds Index tracks the results of the 30 largest mutual funds in the Lipper High Yield Bond Funds Average. The Lipper High Yield Bond Funds Average is a total return performance average of mutual funds tracked by Lipper, Inc. that aim at high (relative) current yield from fixed income securities, have no quality or maturity restrictions and tend to invest in lower grade debt issues. The Lipper High Yield Bond Funds Index is not what is typically considered an "index" because it tracks the performance of other mutual funds rather than changes in the value of a group of securities, a securities index or some other traditional economic indicator. The Lipper High Yield Bond Funds Index reflects deductions for fees and expenses of the constituent funds.