v3.26.1
Expense Example, No Redemption
May 01, 2026
USD ($)
Royce Premier Fund - A Class | Royce Premier Fund | Royce Premier Fund - A Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 668 [1]
Royce Small-Cap Fund - A Class | Royce Small-Cap Fund | Royce Small-Cap Fund - A Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 651 [2]
Royce Small-Cap Special Equity Fund - A Class | Royce Small-Cap Special Equity Fund | Royce Small-Cap Special Equity Fund - A Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 668 [3]
[1] Assumes your investment is subject to the maximum initial sales charge of 5.25%.
[2] Assumes your investment is subject to the maximum initial sales charge of 5.25%.
[3] Assumes your investment is subject to the maximum initial sales charge of 5.25%.