Alger Focus Equity Fund Expense Example - Class A C Shares [Member] - Alger Focus Equity Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 621 |
| Expense Example, with Redemption, 3 Years | 824 |
| Expense Example, with Redemption, 5 Years | 1,043 |
| Expense Example, with Redemption, 10 Years | 1,674 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 277 |
| Expense Example, with Redemption, 3 Years | 548 |
| Expense Example, with Redemption, 5 Years | 944 |
| Expense Example, with Redemption, 10 Years | $ 2,052 |