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Nature of the business (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net loss	$ (60,044)	$ (49,555)	$ (43,102)	$ (42,253)	$ (109,599)	$ (85,355)
Accumulated deficit	$ (595,087)				$ (595,087)		$ (485,488)

X

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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