Alger Small Cap Growth Fund Annual Total Returns |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Class Y Shares [Member] | Alger Small Cap Growth Fund | Class Y | ||||
| Prospectus [Line Items] | ||||
| Annual Return [Percent] | 7.94% | 9.69% | 17.04% | (37.28%) |