Stock-Based Compensation - Summary of share based compensation expense (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | $ 8,856 | $ 9,954 | $ 24,462 | $ 21,443 |
| Research and development expenses | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | 4,137 | 4,797 | 11,556 | 8,602 |
| General and administrative expenses | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock-based compensation expense | $ 4,719 | $ 5,157 | $ 12,906 | $ 12,841 |