Alger Concentrated Equity Fund Expense Example - Class A C Shares [Member] - Alger Concentrated Equity Fund |
Oct. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 603 |
| Expense Example, with Redemption, 3 Years | 1,045 |
| Expense Example, with Redemption, 5 Years | 1,649 |
| Expense Example, with Redemption, 10 Years | 3,277 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 259 |
| Expense Example, with Redemption, 3 Years | 776 |
| Expense Example, with Redemption, 5 Years | 1,559 |
| Expense Example, with Redemption, 10 Years | $ 3,616 |