Leases - Schedule of Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Assets
Operating lease assets	$ 2,546		$ 3,081
Total leased assets	2,546		3,081
Liabilities
Current - Operating	1,036		1,074
Noncurrent - Operating	1,709		2,220
Total leased liabilities	2,745		$ 3,294
Lease Cost
Net lease cost	$ 192	$ 333
Lease Term and Discount Rate
Weighted-average remaining lease term (years)	2 years 6 months		2 years 8 months 12 days
Weighted-average discount rate	6.40%		6.00%
SG&A and R&D Expenses [Member]
Lease Cost
Operating lease cost	$ 276	289
Sublease income	(87)	(14)
R&D Expenses [Member]
Lease Cost
Short term lease cost	$ 3	$ 58