Leases - Component of Lease Cost and Consolidated Balance Sheet Amounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Mar. 31, 2021
Leases [Abstract]
Operating lease cost	$ 499	$ 547	$ 1,366	$ 1,599
Short-term lease cost	325	50	983	251
Variable lease cost	174	241	464	532
Total lease cost	998	$ 838	2,813	$ 2,382
Operating leases
Operating lease ROU assets	7,099		7,099		$ 7,757
Operating lease liabilities	$ 7,892		$ 7,892		$ 8,445
Weighted-average remaining lease term
Operating leases	13 years 10 months		13 years 10 months		13 years 9 months
Weighted-average discount rate
Operating leases	4.33%		4.33%		4.37%