Alger 35 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 |
|
| Class Z Shares [Member] | Alger 35 Fund | Class Z | |||||||
| Prospectus [Line Items] | |||||||
| Annual Return [Percent] | 33.17% | 51.30% | 31.41% | (36.36%) | 9.94% | 67.89% | 30.56% |