Summary of Calculations for Basic Net Loss Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net loss	$ (4,558)	$ (2,719)
Less: accretion of Series B convertible preferred stock dividends	(248)	(313)
Net loss available to common stockholders	$ (4,806)	$ (3,032)
Denominator:
Weighted average common shares outstanding - basic	23,368	22,794
Weighted average common shares outstanding - diluted	23,368	22,794
Net loss per common share - basic	$ (0.21)	$ (0.13)
Net loss per common share - diluted	$ (0.21)	$ (0.13)