Stock-based compensation - Schedule of Share-Based Payment Arrangement, Expensed and Capitalized, Amount (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock compensation expense	$ 21,648	$ 11,217	$ 34,612	$ 18,417
Service-based vesting options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock compensation expense	18	41	37	87
Restricted stock and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock compensation expense	$ 21,630	$ 11,176	$ 34,575	$ 18,330

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details