Loss Per Share - Schedule of Computation of Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended					6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Loss per share, basic and diluted:
Net loss attributable to common shareholders										$ (5,802)	$ (3,891)
Shares used in computation:
Weighted-average common stock outstanding										21,501	20,716
Weighted-average number of shares, basic						20,850		20,951		21,501	20,716
Weighted-average number of shares, diluted						20,850		20,951		21,501	20,716
Loss per share, basic	$ (0.04)	$ (0.09)	$ (0.06)	$ (0.12)	$ 0.01	$ (0.15)	$ (0.01)	$ (0.19)	$ (0.13)	$ (0.27)	$ (0.19)
Loss per share, diluted	$ (0.04)	$ (0.09)	$ (0.06)	$ (0.12)	$ 0.01	$ (0.15)		$ (0.19)	$ (0.13)	$ (0.27)	$ (0.19)