Supplemental Balance Sheet Information Related to Operating Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Right of Use Asset	$ 6,109	$ 11,760
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherCurrentLiabilitiesMember	us-gaap:OtherCurrentLiabilitiesMember
Operating lease liabilities in other current liabilities	$ 2,459	$ 3,671
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherNoncurrentLiabilitiesMember	us-gaap:OtherNoncurrentLiabilitiesMember
Operating lease liabilities in other long-term liabilities	$ 3,657	$ 8,549
Total operating lease liabilities	$ 6,116	$ 12,220