Income Taxes - Schedule of uncertain tax positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Beginning gross unrecognized tax benefits	$ 575	$ 575	$ 575
Decreases related to prior year tax positions	(575)	0	0
Increases related to current year tax positions	562	0	0
Ending gross unrecognized tax benefits	$ 562	$ 575	$ 575