Income (Loss) per Share - Computation of Basic and Diluted Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
NET INCOME (LOSS)	$ 1,972	$ 664	$ 819	$ (167)
Denominator:
Weighted shares outstanding - basic	18,165,611	17,945,053	18,098,694	18,077,506
Net Income (loss) per common share - basic	$ 0.11	$ 0.04	$ 0.05	$ (0.01)
Weighted Average Shares:
Weighted shares outstanding - basic	18,165,611	17,945,053	18,098,694	18,077,506
Common stock option grants	70	0	46	0
Weighted shares outstanding - diluted	18,187,075	17,961,686	18,213,753	18,077,506
Net Income (loss) per common share - diluted	$ 0.11	$ 0.04	$ 0.04	$ (0.01)
Restricted Stock [Member]
Weighted Average Shares:
Restricted shares subject to vesting	21,394	16,633	115,013	0