Stock-based compensation - Classification of expense (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-Based Compensation | ||
| Stock-based compensation expense | $ 7,674 | $ 8,762 |
| Stock options | ||
| Share-Based Compensation | ||
| Stock-based compensation expense | 3,460 | 4,137 |
| Restricted and performance stock units | ||
| Share-Based Compensation | ||
| Stock-based compensation expense | 4,214 | 4,625 |
| Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||
| Share-Based Compensation | ||
| Stock-based compensation expense | 4,059 | 4,073 |
| Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||
| Share-Based Compensation | ||
| Stock-based compensation expense | $ 3,615 | $ 4,689 |