This table describes the fees and expenses that you may pay if you buy, hold and sell shares of Small Cap Fund.


		Ordinary Shares			Institutional Shares			R6 Shares


Management Fees	0.80	%	0.80	%	0.80	%
Distribution (12b-1) Fees	0.25	%	None		None
Other Expenses	0.30	%	0.29	%	0.14	%
Total Annual Fund Operating Expenses	1.35	%	1.09	%	0.94	%
Fee Waiver and/or Expense Reimbursement	—		0.12	%⁽¹⁾⁽²⁾	0.00	%⁽²⁾
Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement	—		0.97	%⁽¹⁾⁽²⁾	0.94	%⁽²⁾

(1)The Manager, in its capacity as transfer agent to Pear Tree Funds, has contractually agreed until July 31, 2027 to waive such portion of the fees that it would otherwise receive for serving as transfer agent under its agreement with Pear Tree Funds such that the aggregate transfer agent fee with respect to Institutional Shares would be calculated using an annual rate of 0.04 percent of Small Cap Fund’s net assets attributable to Institutional Shares. This fee waiver only may be terminated with the approval of the Trustees. This fee waiver does not apply to Ordinary Shares and R6 Shares. The Manager does not have a right to recoup from Small Cap Fund amounts that it has waived under that agreement.

(2)The Manager has contractually agreed until July 31, 2027 to reimburse such portion of the expenses of Small Cap Fund attributable to each of Institutional Shares and R6 Shares such that “Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement” with respect to each of Institutional Shares and R6 Shares, other than extraordinary expenses, is not greater than 0.99 percent of Small Cap Fund’s net assets attributable to Institutional Shares, and 0.96 percent of Small Cap Fund’s net assets attributable to R6 Shares, respectively. The aggregate expenses of Small Cap Fund with respect to Ordinary Shares remain unchanged. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Small Cap Fund amounts that it has waived or reimbursed under that agreement.

Expense Example Narrative [Text Block]

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. 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, that your investment has a 5 percent return each year and that Small Cap Fund’s operating expenses remain the same as set forth in the table above. The example also assumes that the fee waiver agreement currently in effect expires July 31, 2027; therefore, amounts for 3-, 5- and 10-year periods do not include any adjustment to reflect any fee waivers or expense reimbursements. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover, Rate

37.00%

Prospectus [Line Items]

Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of Quality Fund.

Annual Fund Operating Expenses [Table]


		Ordinary Shares			Institutional Shares			R6 Shares


Management Fees	1.00	%	1.00	%	1.00	%
Distribution (12b-1) Fees	0.25	%	None		None
Other Expenses	0.27	%	0.27	%	0.12	%
Total Annual Fund Operating Expenses	1.52	%	1.27	%	1.12	%
Fee Waiver and/or Expense Reimbursement⁽¹⁾	0.40	%	0.52	%⁽²⁾⁽³⁾	0.48	%⁽³⁾
Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement⁽¹⁾	1.12	%	0.75	%⁽²⁾⁽³⁾	0.64	%⁽³⁾

(1)The Manager has contractually agreed until July 31, 2027 >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 to 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. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Quality Fund amounts that it has waived under that agreement.

(2)The Manager, in its capacity as transfer agent to Pear Tree Funds, has contractually agreed until July 31, 2027 to waive such portion of the fees that it would otherwise receive for serving as transfer agent under its agreement with Pear Tree Funds such that the aggregate transfer agent fee with respect to Institutional Shares would be calculated using an annual rate of 0.04 percent of Quality Fund’s net assets attributable to Institutional Shares. This fee waiver only may be terminated with the approval of the Trustees. This fee waiver does not apply to Ordinary Shares or R6 Shares. The Manager does not have a right to recoup from Quality Fund amounts that it has waived under that agreement.

(3)The Manager has contractually agreed until July 31, 2027 to reimburse such portion of the expenses of Quality Fund attributable to each of Institutional Shares and R6 Shares such that “Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement” with respect to each of Institutional Shares and R6 Shares, other than extraordinary expenses, is not greater than 0.79 percent of Quality Fund’s net assets attributable to Institutional Shares, and 0.64 percent of Quality Fund’s net assets attributable to R6 Shares, respectively. The aggregate expenses of Quality Fund with respect to Ordinary Shares remain unchanged. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Quality Fund amounts that it has waived or reimbursed under that agreement.

Expense Example Narrative [Text Block]

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, 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. The example also assumes that the fee waiver and expense reimbursement agreements currently in effect expire July 31, 2027; therefore, amounts for 3-, 5- and 10-year periods do not include any adjustment to reflect any fee waivers or expense reimbursements. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover, Rate

53.00%

Prospectus [Line Items]

Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of Environmental Opportunities Fund.

Annual Fund Operating Expenses [Table]


		Ordinary Shares			Institutional Shares			R6 Shares


Management Fees	0.90	%	0.90	%	0.90	%
Distribution (12b-1) Fees	0.25	%	None		None
Other Expenses	0.49	%	0.48	%	0.34	%
Total Annual Fund Operating Expenses	1.64	%	1.38	%	1.24	%
Fee Waiver and/or Expense Reimbursement ⁽²⁾	0.40	%	0.39	%⁽¹⁾	0.29	%
Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement ⁽²⁾	1.24	%	0.99	%⁽¹⁾	0.95	%

(1)The Manager, in its capacity as transfer agent, has contractually agreed until July 31, 2027 to waive such portion of the fees that it would otherwise receive for serving as transfer agent such that the aggregate transfer agent fee with respect to Institutional Shares would be calculated using an annual rate of 0.04 percent of the net assets of the Fund attributable to Institutional Shares. This fee waiver does not apply to Ordinary Shares or R6 Shares. This fee waiver agreement only may be terminated with the consent of the Trustees. The Manager does not have the right to recoup from Environmental Opportunities Fund amounts that it has waived under that agreement.

(2)The Manager has contractually agreed until July 31, 2027 to reimburse such portion of the expenses of the Fund such that “Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement” with respect to Ordinary Shares, Institutional Shares and R6 Shares, excluding AFFE and extraordinary expenses, is not greater than 1.24 percent of the Fund’s net assets attributable to Ordinary Shares, 0.99 percent of the Fund’s net assets attributable to Institutional Shares, and 0.95 percent of the Fund’s net assets attributable to R6 Shares. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Environmental Opportunities Fund amounts that it has waived or reimbursed under that agreement.

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in Environmental Opportunities Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in Environmental Opportunities Fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5 percent return each year and that Environmental Opportunities Fund’s operating expenses remain the same as set forth in the table above. The example also assumes that the fee waiver and expense reimbursement agreements currently in effect expire July 31, 2027; therefore, amounts for 3-, 5- and 10-year periods do not include any adjustment to reflect any fee waivers or expense reimbursements. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover, Rate

56.00%

Prospectus [Line Items]

Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of Foreign Value Fund.

Annual Fund Operating Expenses [Table]


		Ordinary Shares			Institutional Shares			R6 Shares


Management Fees	1.00	%	1.00	%	1.00	%
Distribution (12b-1) Fees	0.25	%	None		None
Other Expenses	0.30	%	0.30	%	0.15	%
Total Annual Fund Operating Expenses	1.55	%	1.30	%	1.15	%
Fee Waiver and/or Expense Reimbursement ⁽¹⁾	0.10	%	0.22	% ⁽²⁾	0.21	% ⁽³⁾
Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement ⁽¹⁾	1.45	%	1.08	% ⁽²⁾	0.94	% ⁽³⁾

(1)The Manager has contractually agreed until July 31, 2027 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 Foreign Value Fund such that the aggregate management fee that the Manager would receive during the waiver period for serving as the investment manager of Foreign Value Fund would be calculated using an annual rate of 0.90 percent of Foreign Value Fund’s net assets. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Foreign Value Fund amounts that it has waived under that agreement.

(2)The Manager, in its capacity as transfer agent to Pear Tree Funds, has contractually agreed until July 31, 2027 to waive such portion of the fees that it would otherwise receive for serving as transfer agent under its agreement with Pear Tree Funds such that the aggregate transfer agent fee with respect to Institutional Shares would be calculated using an annual rate of 0.04 percent of Foreign Value Fund’s net assets attributable to Institutional Shares. This fee waiver only may be terminated with the approval of the Trustees. This fee waiver does not apply to Ordinary Shares or R6 Shares. The Manager does not have a right to recoup from Foreign Value Fund amounts that it has waived under that agreement.

(3)The Manager has contractually agreed until July 31, 2027 to reimburse such portion of the expenses of Foreign Value Fund attributable to R6 Shares such that “Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement” with respect to R6 Shares, other than extraordinary expenses, is not greater than 0.94 percent of Foreign Value Fund’s net assets attributable to R6 Shares. This expense reimbursement agreement does not permit the Manager to recoup any amounts reimbursed by the Manager, and it only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Foreign Value Fund amounts that it has waived under that agreement.

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in Foreign Value Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in Foreign Value Fund for the time periods indicated and then redeem all of your shares at the end of those periods, your investment has a 5 percent return each year and that Foreign Value Fund’s operating expenses remain the same as set forth in the table above. The example also assumes that the fee waiver and expense reimbursement agreements currently in effect expire July 31, 2027; therefore, amounts for 3-, 5- and 10-year periods do not include any adjustment to reflect any fee waivers or expense reimbursements. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover, Rate

29.00%

Prospectus [Line Items]

Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of Foreign Value Small Cap Fund.

Annual Fund Operating Expenses [Table]


		Ordinary Shares			Institutional Shares			R6 Shares


Management Fees	1.00	%	1.00	%	1.00	%
Distribution (12b-1) Fees	0.25	%	None		None
Other Expenses	0.29	%	0.29	%	0.13	%
Total Annual Fund Operating Expenses	1.54	%	1.29	%	1.13	%
Fee Waiver and/or Expense Reimbursement ⁽¹⁾	0.10	%	0.22	% ⁽²⁾	0.10	%
Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement ⁽¹⁾	1.44	%	1.07	% ⁽²⁾	1.03	%

(1)The Manager has contractually agreed until July 31, 2027 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 Foreign Value Small Cap Fund such that the aggregate management fee that the Manager would receive during the waiver period for serving as the investment manager of Foreign Value Small Cap Fund would be calculated using an annual rate of 0.90 percent of Foreign Value Small Cap Fund’s net assets. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from Foreign Value Small Cap Fund amounts that it has waived under that agreement.

(2)The Manager, in its capacity as transfer agent to Pear Tree Funds, has contractually agreed until July 31, 2027 to waive such portion of the fees that it would otherwise receive for serving as transfer agent under its agreement with Pear Tree Funds such that the aggregate transfer agent fee with respect to Institutional Shares would be calculated using an annual rate of 0.04 percent of Foreign Value Small Cap Fund’s net assets attributable to Institutional Shares. This fee waiver only may be terminated with the approval of the Trustees. This fee waiver does not apply to Ordinary Shares or R6 Shares. The Manager does not have a right to recoup from Foreign Value Small Cap Fund amounts that it has waived under that agreement.

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in Foreign Value Small Cap Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in Foreign Value Small Cap Fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5 percent return each year and that Foreign Value Small Cap Fund’s operating expenses remain the same as set forth in the table above. The example also assumes that the fee waiver and expense reimbursement agreements currently in effect expire July 31, 2027; therefore, amounts for 3-, 5- and 10-year periods do not include any adjustment to reflect any fee waivers or expense reimbursements. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover, Rate

27.00%

Prospectus [Line Items]

Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of International Opportunities Fund.

Annual Fund Operating Expenses [Table]


		Ordinary Shares			Institutional Shares			R6 Shares


Management Fees	0.90	%	0.90	%	0.90	%
Distribution (12b-1) Fees	0.25	%	None		None
Other Expenses	0.39	%	0.39	%	0.24	%
Total Annual Fund Operating Expenses	1.54	%	1.29	%	1.14	%
Fee Waiver and/or Expense Reimbursement ⁽¹⁾	0.10	%	0.30	% ⁽²⁾⁽³⁾	0.18	%⁽³⁾
Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement	1.44	%	0.99	% ⁽²⁾⁽³⁾	0.96	% ⁽³⁾

(1)The Manager has contractually agreed until July 31, 2027 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 International Opportunities Fund such that the aggregate management fee that the Manager would receive during the waiver period for serving as the investment manager of International Opportunities Fund would be calculated using an annual rate of 0.80 percent of International Opportunities Fund’s net assets. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from International Opportunities Fund amounts that it has waived under that agreement.

(2)The Manager, in its capacity as transfer agent to Pear Tree Funds, has contractually agreed until July 31, 2027 to waive such portion of the fees that it would otherwise receive for serving as transfer agent under its agreement with Pear Tree Funds such that the aggregate transfer agent fee with respect to Institutional Shares would be calculated using an annual rate of 0.04 percent of International Opportunities Fund’s net assets attributable to Institutional Shares. This fee waiver only may be terminated with the approval of the Trustees. This fee waiver does not apply to Ordinary Shares or R6 Shares. The Manager does not have the right to recoup from International Opportunities Fund amounts that it has waived under that agreement.

(3)The Manager has contractually agreed until July 31, 2027 to reimburse such portion of the expenses of International Opportunities Fund attributable to each of Institutional Shares and R6 Shares such that “Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement” with respect to each of Institutional Shares and R6 Shares, other than extraordinary expenses, is not greater than 0.99 percent of International Opportunities Fund’s net assets attributable to Institutional Shares, and 0.96 percent of International Opportunities Fund’s net assets attributable to R6 Shares, respectively. The aggregate expenses of International Opportunities Fund with respect to Ordinary Shares remain unchanged. This fee waiver only may be terminated with the approval of the Trustees. The Manager does not have a right to recoup from International Opportunities Fund amounts that it has waived or reimbursed under that agreement.

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in International Opportunities Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in International Opportunities Fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5 percent return each year and that International Opportunities Fund’s operating expenses remain the same as set forth in the table above. The example also assumes that the fee waiver agreement currently in effect expires July 31, 2027; therefore, amounts for 3-, 5- and 10-year periods do not include any adjustment to reflect any fee waivers or expense reimbursements. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover, Rate

46.00%