2.4.0.80004 - Document - Pear Tree Columbia Small Cap Fund Summary {Unlabeled}falsefalsetrue1false falsefalseAsOf2013-08-01_custom_S000009493Memberhttp://www.sec.gov/CIK0000722885duration2013-08-01T00:00:002013-08-01T00:00:001false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00Pear Tree Columbia Small Cap Fundfalsefalsefalse1false truefalseAsOf2013-08-01_custom_S000009493Memberhttp://www.sec.gov/CIK0000722885duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePTF_S000009493Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMembernanafalse0Pear Tree Columbia Small Cap Fund2false 4rr_ObjectiveHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Investment Objective:</p>falsefalsefalsexbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Objective [Heading]3false 4rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b></b>Maximum long-term capital appreciation.</p>falsefalsefalsenonnum:textBlockItemTypenaInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Objective, Primary [Text Block]4false 4rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Fee Table and Expenses of Small Cap Fund</b></p>falsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Expense [Heading]5false 4rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of Small Cap Fund.</p>falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Expense Narrative [Text Block]6false 4rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)</p>falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Operating Expenses Caption [Text]7false 4rr_AnnualFundOperatingExpensesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column period compact * column dei_LegalEntityAxis compact PTF_S000009493Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display: none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column period compact * column dei_LegalEntityAxis compact PTF_S000009493Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesData020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisPTF_S000009493MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMemberfalsefalseOrdinary Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_C000025972Memberrr_ProspectusShareClassAxisexplicitMemberPear Tree Columbia Small Cap FundOrdinary SharesRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-08-01T00:00:002013-08-01T00:00:00$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisPTF_S000009493MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMemberfalsefalseInstitutional Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_C000025973Memberrr_ProspectusShareClassAxisexplicitMemberPear Tree Columbia Small Cap FundInstitutional SharesRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-08-01T00:00:002013-08-01T00:00:00$1falseRowprimaryElement*3false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management Fees 0rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01000.0100falsefalsefalse2truetruetrue0.01000.0100falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management Fees2falseRowprimaryElement*4false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (12b-1) Fees 0rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (12b-1) Fees3falseRowprimaryElement*5false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other Expenses 0rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00380.0038falsefalsefalse2truetruetrue0.00380.0038falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other Expenses4falseRowprimaryElement*7false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total Annual Fund Operating Expenses 0rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01630.0163falsefalsefalse2truetruetrue0.01380.0138falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total Annual Fund Operating ExpensesfalseAnnual Fund Operating Expenses Pear Tree Columbia Small Cap FundUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet2471227020ColumnperiodPeriod*Columndei_LegalEntityAxisAxisPTF_S000009493MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No definition available.false0Annual Fund Operating Expenses [Table]8false 4rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Example</b></p>falsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Expense Example [Heading]9false 4rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">This example is intended to help you compare the cost of investing in Small Cap Fund with the cost of investing in other mutual funds.&#160;&#160;The Example assumes that you invest $10,000 in Small Cap Fund for the time periods indicated and then redeem all of your shares at the end of those periods.&#160;&#160;The Example also assumes that your investment has a 5 percent return each year and that Small Cap Fund&#146;s operating expenses remain the same as set forth in the table above.&#160;&#160;Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example Narrative [Text Block]10false 4rr_ExpenseExampleWithRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column period compact * column dei_LegalEntityAxis compact PTF_S000009493Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display: none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column period compact * column dei_LegalEntityAxis compact PTF_S000009493Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExample020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false21 Year USDfalsefalse$2falseColumnprimaryElement*4false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false23 Years USDfalsefalse$3falseColumnprimaryElement*5false 2rr_ExpenseExampleYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false25 Years USDfalsefalse$4falseColumnprimaryElement*6false 2rr_ExpenseExampleYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2Expense Example, With Redemption, 10 Years USDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMemberfalsefalseOrdinary Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_C000025972Memberrr_ProspectusShareClassAxisexplicitMemberPear Tree Columbia Small Cap FundOrdinary SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue165165falsefalsefalse2truefalsetrue514514falsefalsefalse3truefalsetrue887887falsefalsefalse4truefalsetrue19331933falsefalsefalsenanafalse0Ordinary Shares2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMemberfalsefalseInstitutional Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_C000025973Memberrr_ProspectusShareClassAxisexplicitMemberPear Tree Columbia Small Cap FundInstitutional SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue141141falsefalsefalse2truefalsetrue437437falsefalsefalse3truefalsetrue755755falsefalsefalse4truefalsetrue16571657falsefalsefalsenanafalse0Institutional SharesfalseExpense Example Pear Tree Columbia Small Cap Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet426442028ColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No definition available.false0Expense Example, With Redemption [Table]11false 4rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p>falsefalsefalsexbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio Turnover [Heading]12false 4rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">Small Cap Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#147;turns over&#148; its portfolio).&#160;&#160;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.&#160;&#160;These costs, which are not reflected in annual fund operating expenses or in the example, affect Small Cap Fund&#146;s performance.&#160;&#160;During the most recent fiscal year, Small Cap Fund&#146;s portfolio turnover rate was 54 percent of the average value of its portfolio.</p>falsefalsefalsenonnum:textBlockItemTypenaDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio Turnover [Text Block]13false 4rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Principal Investment Strategies</b></p>falsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy [Heading]14false 4rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">Under normal market conditions, Small Cap Fund invests at least 80 percent of its net assets (plus borrowings for investment purposes) in equity securities of small-cap companies.&#160;&#160;Small Cap Fund considers a small-cap company to be a company having at time of purchase a market capitalization of an issuer in the Russell 2000&#174; Index (at the time of the index&#146;s most recent rebalancing, stocks with capitalizations of approximately $100 million to $3 billion).</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&#160;</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">The sub-adviser to Small Cap Fund utilizes a series of well-defined, established processes in order to select and reevaluate securities in the growth and value categories.&#160;&#160;The sub-adviser begins with a universe of securities.&#160;&#160;Each security in that universe is then evaluated using a series of proprietary screens involving fundamental, quantitative, qualitative and technical analysis.&#160;&#160;Once a security has been subjected to those analytical filters, the sub-adviser performs a detailed assessment; develops an investment thesis; sets a price target and initiates a portfolio position.&#160;&#160;From time to time, holdings may be diversified by company and industry, although Small Cap Fund is not obligated to remain diversified.&#160;&#160;While most assets are typically invested in U.S. common stocks, Small Cap Fund may invest in American Depositary Receipts, or ADRs, and other foreign stocks traded on U.S. exchanges in keeping with Small Cap Fund&#146;s objectives.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&#160;</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">The sub-adviser generally considers growth stocks to be equity securities issued by companies that have sustainable competitive advantages and products or services that potentially could generate significantly greater-than-average revenue and earnings growth.&#160;&#160;The sub-adviser generally considers value stocks to be equity securities issued by companies that have underappreciated but stable earnings and cash flow and where there are visible and imminent inflection points and catalysts that will result in increased earnings and cash flow, driving stock appreciation.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&#160;</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">Small Cap Fund may lend its securities.&#160;&#160;Small Cap Fund may hold cash, or it may manage its cash by investing in cash equivalents and money market funds.&#160;&#160;Small Cap Fund also may take temporary defensive positions that are inconsistent with its principal investment strategies.</p>falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. 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A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk Narrative [Text Block]17false 4rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>Performance</b></p>falsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table [Heading]18false 4rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">The following bar charts and tables provide some indication of the risks of investing in Small Cap Fund by showing changes in the Fund&#146;s performance over time. The tables also compare Small Cap Fund&#146;s performance to a broad measure of market performance that reflects the type of securities in which Small Cap Fund invests. 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Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2012falseAnnual Total Returns UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet11009110014ColumnperiodPeriod*Columndei_LegalEntityAxisAxisPTF_S000009493MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to BarChartData.No definition available.false0Bar Chart [Table]21false 4rr_BarChartClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">Calendar year-to-date return of the Ordinary Shares of Small Cap Fund as of 6/30/2013 is 14.91%</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&#160;</p> <table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 25%; border-top: black 1pt solid; border-bottom: black 1.5pt solid"><font style="font-size: 10pt">Best Quarter:</font></td> <td style="width: 40%; border-top: black 1pt solid; border-bottom: black 1.5pt solid"><font style="font-size: 10pt">Q3 2009</font></td> <td style="width: 35%; border-top: black 1pt solid; border-bottom: black 1.5pt solid"><font style="font-size: 10pt">17.75%</font></td></tr> <tr style="vertical-align: top"> <td style="border-bottom: black 1.5pt solid"><font style="font-size: 10pt">Worst Quarter:</font></td> <td style="border-bottom: black 1.5pt solid"><font style="font-size: 10pt">Q4 2008</font></td> <td style="border-bottom: black 1.5pt solid"><font style="font-size: 10pt">(33.47)%</font></td></tr> </table> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&#160;</p>falsefalsefalsenonnum:textBlockItemTypenaIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. 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Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_C000025972Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberPear Tree Columbia Small Cap FundOrdinary SharesAfter Taxes on DistributionsRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00After Taxes on Distributionsfalsefalsefalse2truetruetrue0.13390.1339falsefalsefalse3truetruetrue-0.0151-0.0151falsefalsefalse4truetruetrue0.07540.0754falsefalsefalsenanafalse0Ordinary Shares After Taxes on Distributions3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap 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Sales4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMemberfalsefalseInstitutional Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_C000025973Memberrr_ProspectusShareClassAxisexplicitMembertruefalse[PerformanceMeasureDomain]rr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberPear Tree Columbia Small Cap FundInstitutional Shares[PerformanceMeasureDomain]RatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Before Taxesfalsefalsefalse2truetruetrue0.13640.1364falsefalsefalse3truetruetrue-0.0123-0.0123falsefalsefalse4truetruetrue0.08400.0840falsefalsefalsenanafalse0Institutional Shares5falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2013-08-01T00:00:002013-08-01T00:00:00falsefalsePear Tree Columbia Small Cap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_S000009493Memberdei_LegalEntityAxisexplicitMembertruefalse[ShareClassDomain]rr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell 2000 Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiPTF_Russell2000IndexMemberrr_PerformanceMeasureAxisexplicitMemberPear Tree Columbia Small Cap Fund[ShareClassDomain]Russell 2000 IndexRatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Russell 2000 Indexfalsefalsefalse2truetruetrue0.16350.1635falsefalsefalse3truetruetrue0.03560.0356falsefalsefalse4truetruetrue0.09720.0972falsefalsefalsenanafalse0Russell 2000 IndexfalseAverage Annual Total Returns Pear Tree Columbia Small Cap FundUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet45252465096ColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisPTF_S000009493MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No definition available.false0Performance [Table]23false 4rr_PerformanceTableClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 10pt Times New Roman, Times, Serif; margin: 0"><b>After-tax returns.</b> 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.&#160;&#160;Actual after-tax returns may differ depending on your individual circumstances.</p>falsefalsefalsenonnum:textBlockItemTypenaIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii false0Performance Table Closing [Text Block]falsePear Tree Columbia Small Cap Fund Summary (Pear Tree Columbia Small Cap Fund)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://peartreefunds.com/role/PearTreeColumbiaSmallCapFundSummaryUnlabeled123