Earnings Per Share - Schedule of Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Diluted earnings per share:
Net income	$ 3,731	$ 519
Shares used in computation:
Weighted-average common stock outstanding	19,307	18,921
Common stock equivalents	527	384
Weighted-average number of shares	19,834	19,305
Diluted earnings per share	$ 0.19	$ 0.03