v3.26.1
Shareholder Fees
May 01, 2026
Impax Large Cap Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Large Cap Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Small Cap Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Small Cap Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Small Cap Fund | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [1]
Impax US Sustainable Economy Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax US Sustainable Economy Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax US Sustainable Economy Fund | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [2]
Impax Global Opportunities Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Global Opportunities Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Global Environmental Markets Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Global Environmental Markets Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Global Environmental Markets Fund | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [3]
Impax International Sustainable Economy Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax International Sustainable Economy Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Core Bond Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Core Bond Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax High Yield Bond Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) (2.00%) [4]
Impax High Yield Bond Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) (2.00%) [4]
Impax High Yield Bond Fund | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 4.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [5]
Redemption Fee (as a percentage of Amount Redeemed) (2.00%) [4]
Impax Sustainable Allocation Fund | Institutional Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Impax Sustainable Allocation Fund | Investor Class  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
[1] 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.”
[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] 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.”
[4] The redemption fee may apply to shares that are redeemed or exchanged within 30 days of purchase (including through exchanges). Redemption fees are paid to and retained by the High Yield Bond Fund and are not sales charges (loads). See “Shareholder Guide – How to Sell Shares – Redemption Fee” below.
[5] 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.”