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Stock-based compensation - Classification of expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Compensation
Stock-based compensation expense	$ 9,114	$ 6,992	$ 17,961	$ 14,186
Stock options
Share-Based Compensation
Stock-based compensation expense	5,688	4,845	11,302	10,004
Restricted stock units
Share-Based Compensation
Stock-based compensation expense	3,426	2,147	6,659	4,182
Research and development
Share-Based Compensation
Stock-based compensation expense	4,447	2,529	7,745	5,143
Selling, general and administrative
Share-Based Compensation
Stock-based compensation expense	$ 4,667	$ 4,463	$ 10,216	$ 9,043

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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+ References

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