Operating Leases - ROU Assets and Lease Liability Obligations - Schedule of Right-of-use Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Lessee Disclosure [Abstract]
Right-of-use assets	$ 1,346	$ 1,418
Lease liability, current	309	304
Lease liability, net of current portion	1,181	1,260
Total lease liability obligations	$ 1,490	$ 1,564
Weighted-average remaining lease term	4 years 3 months 29 days	4 years 6 months 29 days
Weighted-average discount rate	3.00%	3.00%