Alger Weatherbie Specialized Growth Fund Annual Total Returns |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Class Y Shares [Member] | Alger Weatherbie Specialized Growth Fund | Class Y | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 0.94% | 14.13% | 11.76% | (37.87%) | 5.94% | 57.45% | 39.73% | (3.82%) |