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Leases - Schedule of Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Assets
Operating lease assets	$ 1,384		$ 1,384		$ 1,848
Total leased assets	1,384		1,384		1,848
Liabilities
Current - Operating	993		993		1,010
Noncurrent - Operating	532		532		1,007
Total leased liabilities	1,525		1,525		$ 2,017
Lease Cost
Net lease cost	$ 84	$ 186	$ 170	$ 378
Lease Term and Discount Rate
Weighted-average remaining lease term (years)	2 years 1 month 6 days		2 years 1 month 6 days		2 years 4 months 24 days
Weighted-average discount rate	6.40%		6.40%		6.00%
SG&A and R&D Expenses [Member]
Lease Cost
Operating lease cost	$ 191	268	$ 381	544
Sublease income	(110)	(90)	(218)	(177)
R&D Expenses [Member]
Lease Cost
Short term lease cost	$ 3	$ 8	$ 7	$ 11

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