Summary of Calculations for Basic and Diluted Net Income (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income (loss)	$ (5,489)	$ (392)	$ 1,620
Less: accretion of Series B convertible preferred stock dividends	(1,266)	(1,206)	(1,148)
Net income (loss) available to common stockholders	$ (6,755)	$ (1,598)	$ 472
Denominator:
Weighted average common shares outstanding - basic	23,068	22,659	21,340
Net income (loss) per common share - basic	$ (0.29)	$ (0.07)	$ 0.02
Dilutive securities:
Stock options, RSUs, and warrants			927
Weighted average common shares outstanding - diluted	23,068	22,659	22,267
Net income (loss) per common share - diluted	$ (0.29)	$ (0.07)	$ 0.02
Diluted net income (loss) per common share:
Net income (loss) available to common stockholders	$ (6,755)	$ (1,598)	$ 472
Net income (loss) available to common stockholders	$ (6,755)	$ (1,598)	$ 472