Commitments and Contingencies - Information related to Right-of-use Assets and Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Cash paid for operating lease liabilities	$ 254	$ 246
Right-of-use assets obtained in exchange for new operating lease obligations	$ 574	$ 150
Weighted-average remaining lease term	2 years 8 months 12 days	3 years 8 months 12 days
Weighted-average discount rate	12.30%	12.30%