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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Stock-based compensation - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing stock price (in USD per share)	$ 55.30		$ 55.30
Service-based Vesting Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation cost	$ 100,000	$ 200,000	$ 300,000	$ 700,000
Unrecognized stock-based compensation cost	300,000		$ 300,000
Unrecognized stock-based compensation cost, expected weighted-average period of recognition			1 year 2 months 12 days
Performance-based and Market-based Vesting Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	$ 0	0	$ 0	0
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested RSAs outstanding (in shares)	341,802		341,802
Restricted Stock Awards and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation cost	$ 7,200,000	$ 5,000,000	$ 21,600,000	$ 13,900,000
Unrecognized stock-based compensation cost, expected weighted-average period of recognition			2 years 1 month 6 days
Unvested RSAs outstanding (in shares)	2,499,990		2,499,990		2,275,742
Unrecognized stock-based compensation cost	$ 51,200,000		$ 51,200,000