Stock-based compensation - Summary of Employee Service Share Based Compensation Allocation of Recognized Period Costs (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | $ 120,298 | $ 118,880 | $ 56,783 |
| Cost of sales | |||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | 16,696 | 11,927 | 10,764 |
| Selling general and administrative expense | |||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | 92,004 | 98,532 | 38,325 |
| Research and development | |||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | $ 11,598 | $ 8,421 | $ 7,694 |