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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Central Index Key dei_EntityCentralIndexKey 0000722885
Pear Tree Quality Fund  
Risk/Return: rr_RiskReturnAbstract  
Investment Objective, Heading rr_ObjectiveHeading
Investment Objective:
Investment Objective, Primary rr_ObjectivePrimaryTextBlock
Long-term growth of capital.
Expense, Heading rr_ExpenseHeading
Fee Table and Expenses of Quality Fund
Expense, Narrative rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of Quality Fund.
Operating Expenses, Caption rr_OperatingExpensesCaption
Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover, Heading rr_PortfolioTurnoverHeading
Portfolio Turnover
Portfolio Turnover rr_PortfolioTurnoverTextBlock
Quality Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect Quality Fund's performance.  During the most recent fiscal year, Quality Fund's portfolio turnover rate was 49 percent of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 49.00%
Expense Example, Heading rr_ExpenseExampleHeading
Example
Expense Example, Narrative rr_ExpenseExampleNarrativeTextBlock
This example is intended to help you compare the cost of investing in Quality Fund with the cost of investing in other mutual funds.  The Example assumes that you invest $10,000 in Quality Fund for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5 percent return each year and that Quality Fund's operating expenses remain the same as set forth in the table above.  Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading rr_StrategyHeading
Principal Investment Strategies
Investment Strategy, Narrative rr_StrategyNarrativeTextBlock
Under normal market conditions, Quality Fund invests at least 80 percent of its net assets (plus any borrowings for investment purposes) in equity securities of U.S. issuers. Quality Fund principally invests in equity securities of large companies, that is, companies with a market capitalization of greater than $5 billion at time of purchase. However, there is no minimum market capitalization for companies whose securities Quality Fund may purchase.
 
To manage Quality Fund's portfolio, Quality Fund's investment manager, in consultation with its sub-adviser, periodically selects what it believes is a well-managed mutual fund (the “target portfolio”) and then purchases and sells Quality Fund assets such that Quality Fund's portfolio generally holds the same securities and in the same percentages as the target portfolio as of the end of the target portfolio's most recent fiscal quarter.  The Fund's current target portfolio is GMO Quality Fund Class III (ticker symbol: GQETX).  If Quality Fund's assets significantly increase, Quality Fund may select more than one target portfolio.  Among the criteria used to select the target portfolio are the limited availability of the target portfolio to retail investors and the target portfolio's historical performance.
 
From time to time, a target portfolio may invest in non-U.S. securities.  In such cases, Quality Fund typically invests in American Depositary Receipts (or ADRs), which represent interests in such securities.   Quality Fund also may invest in derivatives (i.e., a security or instrument whose value is determined by reference to the value or the change in value of one or more securities, currencies, indices or other financial instruments) for the purpose of hedging the value of the portfolio or to establish a position in the future.  Quality Fund also may lend its securities.  Quality Fund may hold cash, or it may manage its cash by investing in cash equivalents and money market funds.
Strategy Portfolio Concentration rr_StrategyPortfolioConcentration
Under normal market conditions, Quality Fund invests at least 80 percent of its net assets (plus any borrowings for investment purposes) in equity securities of U.S. issuers. Quality Fund principally invests in equity securities of large companies, that is, companies with a market capitalization of greater than $5 billion at time of purchase. However, there is no minimum market capitalization for companies whose securities Quality Fund may purchase.
Risk, Heading rr_RiskHeading
Principal Investment Risks
Risk, Narrative rr_RiskNarrativeTextBlock
It is possible to lose money by investing in Quality Fund.  An investment in Quality Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
 
Market, Industry and Specific Holdings.  The share price of Quality Fund may fall because of weakness in the stock markets, generally, weaknesses with respect to a particular industry in which Quality Fund has significant holdings, or weaknesses associated with one or more specific companies in which Quality Fund may have substantial investments.
 
Difficulty in Comparing Fund Performance with Target Portfolio Performance.  Quality Fund performance typically does not mirror the target portfolio's performance.  Among other things, the holdings of the target portfolio may change significantly during the period between the end of a quarter and the time when those changes are publicly disclosed.  From time to time, Quality Fund may be purchasing specific securities at the same time that the target portfolio is selling them.  In addition, the target portfolio may have lower expenses relative to its assets than Quality Fund.
 
Inability to Conduct Due Diligence on Target Portfolio's Investment Adviser.  Quality Fund's investment manager and sub-adviser may be able to perform only limited due diligence on the target portfolio's investment adviser to determine, among other things, whether the investment adviser is adhering to the target portfolio's investment guidelines and whether the risks disclosed in the target portfolio's offering documents reflect the risks of the target portfolio.
 
Potential Impact on Target Portfolio.  Quality Fund's purchases and sales of securities for its own portfolio may adversely impact the management of a target portfolio and thus, Quality Fund itself.
 
Accuracy of Target Portfolio Information.  Any failure by a target portfolio to file accurate and timely portfolio information could affect the performance of Quality Fund.
 
Large- and Mid-Capitalization Securities.  Securities issued by large- and mid-cap companies tend to be less volatile than securities issued by smaller companies.  Larger companies, however, may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods, and may be unable to respond as quickly to competitive challenges.
 
Foreign Investing.  Quality Fund's investments in foreign securities (primarily through ADRs) may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar.
 
Non-Diversification.  Quality Fund is “non-diversified”, which means that it may invest a higher percentage of its assets in a smaller number of issuers.  As a result, a decline in the value of the securities of one issuer could have a significant negative effect on Quality Fund.
 
Sector. Quality Fund may have significant investments in one or more specific industry sectors, subjecting it to risks greater than general market risk.
 
Liquidity Risk.  Quality Fund may not be able to sell some or all of its securities at desired prices or may be unable to sell the securities at all.
 
Securities Lending.  Securities lending involves two primary risks: investment risk and borrower default risk. Investment risk is the risk that Quality Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that Quality Fund will lose money due to the failure of a borrower to return a borrowed security in a timely manner.
 
Derivatives. Quality Fund's investments in derivative instruments are subject to a number of risks, such as counterparty risk, the risk of mispricing or improper valuation, and the risk that the value of the instrument may not increase or decrease as expected.
 
Please refer to “Fund Objectives, Strategies and Risks” in the Prospectus for further details.
Risk, Lose Money rr_RiskLoseMoney
It is possible to lose money by investing in Quality Fund.
Risk, Nondiversified Status rr_RiskNondiversifiedStatus
Non-Diversification.  Quality Fund is “non-diversified”, which means that it may invest a higher percentage of its assets in a smaller number of issuers.  As a result, a decline in the value of the securities of one issuer could have a significant negative effect on Quality Fund.
Risk, Not Insured Depository Institution rr_RiskNotInsuredDepositoryInstitution
An investment in Quality Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading
Performance
Performance, Narrative rr_PerformanceNarrativeTextBlock
The following bar charts and tables provide some indication of the risks of investing in Quality Fund by showing changes in Quality Fund's performance over time. The tables also compare Quality Fund's performance to a broad measure of market performance that reflects the type of securities in which Quality Fund invests. Past performance does not necessarily indicate how Quality Fund will perform (before and after taxes) in the future.  Performance shown for periods prior to January 27, 2011 does not reflect the current investment strategy or the performance of the current sub-adviser.  Updated performance information is available at www.peartreefunds.com.
Performance, Information Illustrates Variability of Returns rr_PerformanceInformationIllustratesVariabilityOfReturns
The following bar charts and tables provide some indication of the risks of investing in Quality Fund by showing changes in Quality Fund's performance over time.
Performance Additional Market Index [Text] rr_PerformanceAdditionalMarketIndex
The tables also compare Quality Fund's performance to a broad measure of market performance that reflects the type of securities in which Quality Fund invests.
Performance Availability Website Address rr_PerformanceAvailabilityWebSiteAddress
www.peartreefunds.com
Performance Past Does Not Indicate Future rr_PerformancePastDoesNotIndicateFuture
Past performance does not necessarily indicate how Quality Fund will perform (before and after taxes) in the future.
Bar Chart, Heading rr_BarChartHeading
Annual Return Ordinary Shares (Calendar year ended December 31)
Bar Chart, Closing rr_BarChartClosingTextBlock
Returns for Institutional Shares will differ from the Ordinary Share returns due to differences in expenses between the classes. 
 
Calendar year-to-date return of the Ordinary Shares of Quality Fund as of 6/30/2015 is (0.23)%.
 
Best Quarter:
Q2 2009
   15.53 %
Worst Quarter:
Q4 2008
   (23.84 )%
Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2015
Year to Date Return rr_BarChartYearToDateReturn (0.23%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel
Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 15.53%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel
Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (23.84%)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred
The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.
Performance Table, One Class of after Tax Shown rr_PerformanceTableOneClassOfAfterTaxShown
After-tax returns are shown only for Ordinary Shares and after-tax returns for Institutional Shares may vary.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher
Actual after-tax returns may differ depending on your individual circumstances.
Performance Table, Closing rr_PerformanceTableClosingTextBlock
After-Tax Returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances and may differ from those shown. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. After-tax returns are shown only for Ordinary Shares and after-tax returns for Institutional Shares may vary.  Actual after-tax returns may differ depending on your individual circumstances.
Pear Tree Quality Fund | S&P 500 Index  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes
Reflects no deductions for fees, expenses or taxes
1 Year rr_AverageAnnualReturnYear01 13.69%
5 Years rr_AverageAnnualReturnYear05 15.45%
10 Years rr_AverageAnnualReturnYear10 7.67%
Pear Tree Quality Fund | Ordinary Shares  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.29%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.54%
Fee Waiver and/or Expense Reimbursement [1] rr_FeeWaiverOrReimbursementOverAssets 0.25%
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 1.29%
1 Year rr_ExpenseExampleYear01 $ 131
3 Years rr_ExpenseExampleYear03 462
5 Years rr_ExpenseExampleYear05 816
10 Years rr_ExpenseExampleYear10 $ 1,813
Annual Return 2005 rr_AnnualReturn2005 10.56%
Annual Return 2006 rr_AnnualReturn2006 16.38%
Annual Return 2007 rr_AnnualReturn2007 (2.09%)
Annual Return 2008 rr_AnnualReturn2008 (41.52%)
Annual Return 2009 rr_AnnualReturn2009 20.75%
Annual Return 2010 rr_AnnualReturn2010 7.10%
Annual Return 2011 rr_AnnualReturn2011 12.78%
Annual Return 2012 rr_AnnualReturn2012 10.84%
Annual Return 2013 rr_AnnualReturn2013 24.54%
Annual Return 2014 rr_AnnualReturn2014 11.01%
1 Year rr_AverageAnnualReturnYear01 11.01%
5 Years rr_AverageAnnualReturnYear05 13.10%
10 Years rr_AverageAnnualReturnYear10 5.11%
Pear Tree Quality Fund | Ordinary Shares | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.88%
5 Years rr_AverageAnnualReturnYear05 12.30%
10 Years rr_AverageAnnualReturnYear10 4.68%
Pear Tree Quality Fund | Ordinary Shares | After Taxes on Distributions and Sales  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.55%
5 Years rr_AverageAnnualReturnYear05 10.48%
10 Years rr_AverageAnnualReturnYear10 4.09%
Pear Tree Quality Fund | Institutional Shares  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 1.00%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.29%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.29%
Fee Waiver and/or Expense Reimbursement [1] rr_FeeWaiverOrReimbursementOverAssets 0.25%
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 1.04%
1 Year rr_ExpenseExampleYear01 $ 106
3 Years rr_ExpenseExampleYear03 384
5 Years rr_ExpenseExampleYear05 684
10 Years rr_ExpenseExampleYear10 $ 1,535
1 Year rr_AverageAnnualReturnYear01 11.28%
5 Years rr_AverageAnnualReturnYear05 13.57%
10 Years rr_AverageAnnualReturnYear10 5.38%
[1] The Manager has contractually agreed until July 31, 2016 to waive such portion of the management fees that it would otherwise receive under its agreement with Pear Tree Funds for serving as investment manager to Quality Fund, such that the aggregate management fee that the Manager would receive during the waiver period for serving as the investment manager of Quality Fund would be calculated using (a) an annual rate of 0.75 percent for the first $125 million of Quality Fund's net assets, and (b) an annual rate of 0.50 percent for Quality Fund's net assets in excess of $125 million.