Lease Commitments - Summary of Other Information Related to Leases (Detail) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating leases - operating cash flows	$ 1,821	$ 1,476
Finance leases - financing cash flows	356	210
Finance leases - operating cash flows	65	44
Non-cash leases activity
Right-of-use assets obtained in exchange for new operating lease liabilities	56	4,625
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 93	$ 28
Weighted average remaining lease terms (in years)
Operating leases	29 years 8 months 12 days
Finance leases	2 years
Weighted average discount rate
Operating leases	10.90%
Finance leases	9.20%