Income Taxes - Variations from Federal Statutory Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Expected federal income tax benefit at statutory rate of 21% in 2021 and 2020	$ (533)	$ 361
Effect of permanent other differences	79	3
Goodwill		(2,079)
Return to provision adjustments	220	58
State income tax expense (benefit), net of federal benefit tax assets	(38)	26
Valuation allowance	474	(380)
Provision for (benefit from) income taxes	$ 202	$ (2,011)