Leases - Summary of Operating and Finance Lease Costs Weighted Average Lease Terms and Discount Rates (Detail)	Mar. 31, 2021	Mar. 31, 2020
Weighted average remaining lease term (in years):
Operating leases	7 years 4 months 24 days	7 years
Finance leases	5 years 3 months 18 days	6 years 3 months 18 days
Weighted average discount rate:
Operating leases	5.40%	5.40%
Finance leases	5.40%	5.40%