Leases - Operating Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost	$ 2,914	$ 2,914	$ 2,496
Short-term lease cost	1,710	5	0
Variable lease cost	1,171	538	225
Total operating lease cost	$ 5,795	$ 3,457	$ 2,721