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Leases - Schedule of Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Assets
Operating lease assets	$ 2,308		$ 2,308		$ 3,081
Total leased assets	2,308		2,308		3,081
Liabilities
Current - Operating	994		994		1,074
Noncurrent - Operating	1,500		1,500		2,220
Total leased liabilities	2,494		2,494		$ 3,294
Lease Cost
Net lease cost	$ 186	$ 315	$ 378	$ 648
Lease Term and Discount Rate
Weighted-average remaining lease term (years)	2 years 3 months 18 days		2 years 3 months 18 days		2 years 8 months 12 days
Weighted-average discount rate	6.40%		6.40%		6.00%
SG&A and R&D Expenses [Member]
Lease Cost
Operating lease cost	$ 268	347	$ 544	636
Sublease income	(90)	(19)	(177)	(33)
R&D Expenses [Member]
Lease Cost
Short term lease cost	$ 8	(17)	$ 11	30
SG&A Expenses [Member]
Lease Cost
Short term lease cost		$ 4		$ 15

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