Leases - Supplemental Balance Sheet Related to Operating Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Other current liabilities – operating lease current portion	$ 641	$ 645
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Operating lease liabilities - noncurrent	$ 1,697	$ 1,860
Total operating lease liabilities	$ 2,338	$ 2,505