Commitments and Contingencies - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Operating lease costs	$ 2,046	$ 2,216	$ 4,104	$ 5,598
Variable lease costs	434	360	671	564
Cash paid for amounts included in the measurement of operating lease liabilities	$ 1,921	$ 1,637	$ 3,860	$ 3,137
Weighted average remaining lease term (in years)	14 years 3 months 18 days	14 years 9 months 18 days	14 years 3 months 18 days	14 years 9 months 18 days
Weighted average discount rate	3.20%	3.20%	3.20%	3.20%