Alger Concentrated Equity Fund Expense Example, No Redemption - Class A C Shares [Member] - Alger Concentrated Equity Fund - Class C |
Oct. 31, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 159 |
| Expense Example, No Redemption, 3 Years | 776 |
| Expense Example, No Redemption, 5 Years | 1,559 |
| Expense Example, No Redemption, 10 Years | $ 3,616 |