Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenues, net	$ 17,731	$ 20,019
Cost of revenues	11,635	12,795
Gross profit	6,096	7,224
Operating expenses:
Sales and marketing	6,520	6,997
Research and development	10,235	11,832
General and administrative	8,871	10,396
Impairment loss on long-lived assets	3,276	0
Total operating expenses	28,902	29,225
Loss from operations	(22,806)	(22,001)
Other income, net	739	4,079
Loss before provision for (benefit from) income taxes	(22,067)	(17,922)
Income tax benefit, net	(150)	305
Net loss	(21,917)	(18,227)
Foreign currency translation adjustments	(32)	79
Comprehensive loss	$ (21,949)	$ (18,148)
Net loss per share available to common stockholders, basic	$ (1.24)	$ (1.15)
Net loss per share available to common stockholders, diluted	$ (1.24)	$ (1.15)
Weighted-average shares used to compute net loss per share available to common stockholders, basic	17,656,000	15,891,000
Weighted-average shares used to compute net loss per share available to common stockholders, diluted	17,656,000	15,891,000