Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current:
State	$ 16	$ 129
Total current	16	129
Deferred:
Federal	(1,892)	47
State	(135)	4
Total deferred	(2,027)	51
Provision for (benefit from) income taxes	$ (2,011)	$ 180