UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 1,468	$ 2,058	$ 2,777	$ 3,893
Cost of revenue	330	916	643	1,819
Gross profit	1,138	1,142	2,134	2,074
Operating expenses:
Sales and marketing	1,423	1,568	3,161	2,774
Research and development	1,451	1,486	3,247	3,136
General and administrative	1,185	2,049	2,691	4,109
Operating loss	(2,921)	(3,961)	(6,965)	(7,945)
Interest and other income	0	1	41	2
Interest expense	(208)	(525)	(939)	(596)
Gain on lease termination	0	420	0	420
Net loss	$ (3,129)	$ (4,065)	$ (7,863)	$ (8,119)
Net loss per share:
Basic	$ (0.15)	$ (0.21)	$ (0.37)	$ (0.42)
Diluted	$ (0.15)	$ (0.21)	$ (0.37)	$ (0.42)
Weighted average common shares outstanding:
Basic	21,383	19,372	21,225	19,238
Diluted	21,383	19,372	21,225	19,238