v3.25.3
Expense Example - AMG GW&K Small Cap Growth Fund
Apr. 30, 2025
USD ($)
CLASS N  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 92
Expense Example, with Redemption, 3 Years 299
Expense Example, with Redemption, 5 Years 524
Expense Example, with Redemption, 10 Years 1,172
CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 75
Expense Example, with Redemption, 3 Years 245
Expense Example, with Redemption, 5 Years 432
Expense Example, with Redemption, 10 Years 971
Class Z  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 68
Expense Example, with Redemption, 3 Years 226
Expense Example, with Redemption, 5 Years 399
Expense Example, with Redemption, 10 Years $ 900