Leases - Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021
Operating leases
2022	$ 1,344
2023	5,859
2024	5,422
2025	5,584
2026	4,520
Thereafter	8,158
Total undiscounted lease payments	30,887
Less imputed interest	(4,379)
Total lease liabilities	26,508	$ 21,259
Finance leases
2022	120
2023	120
2024	120
2025	120
2026	90
Thereafter	0
Total undiscounted lease payments	570
Less imputed interest	(28)
Total finance lease liabilities	$ 542	$ 0