Alger Capital Appreciation Institutional 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 R Shares [Member] | Alger Capital Appreciation Institutional Fund | Class I | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 31.99% | 49.59% | 42.88% | (36.81%) | 17.90% | 41.34% | 33.12% | (0.87%) | 31.01% | 0.46% |