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 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Class I Shares [Member] | Alger Weatherbie Specialized Growth Fund | Class I | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 0.42% | 13.70% | 11.28% | (38.11%) | 5.55% | 56.83% | 39.21% | (4.24%) | 37.90% | 3.74% |