Leases - Schedule of Components of Lease Expense and Related Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 299	$ 195	$ 203
Short-term lease cost	27	42	117
Total Lease Cost	326	237	320
Operating cash flows used for operating leases	$ 286	$ 212	$ 198