Lease Commitments - Summary of Other Information Related to Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities
Operating leases - operating cash flows	$ 3,793	$ 3,043
Finance leases - financing cash flows	633	524
Finance leases - operating cash flows	129	119
Non-cash leases activity
Right-of-use assets obtained in exchange for new operating lease liabilities	332	5,160
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 130	$ 969
Weighted average remaining lease terms (in years)
Operating leases	29 years 6 months	30 years
Finance leases	1 year 7 months 6 days	2 years 3 months 18 days
Weighted average discount rate
Operating leases	10.90%	10.80%
Finance leases	9.10%	4.50%