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Stock-based compensation - Classification of expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-Based Compensation
Stock-based compensation expense	$ 6,992	$ 6,313	$ 14,186	$ 12,563
Stock options
Share-Based Compensation
Stock-based compensation expense	4,845	5,093	10,004	10,268
Restricted stock units
Share-Based Compensation
Stock-based compensation expense	2,147	1,220	4,182	2,295
Research and development
Share-Based Compensation
Stock-based compensation expense	2,529	2,227	5,143	4,685
Selling, general and administrative
Share-Based Compensation
Stock-based compensation expense	$ 4,463	$ 4,086	$ 9,043	$ 7,878

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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+ References

No definition available.

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