Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenue	$ 1,960	$ 1,655	$ 3,812	$ 3,450
Cost of revenue	733	651	1,358	1,398
Gross profit	1,227	1,004	2,454	2,052
Operating expenses:
Sales and marketing	3,652	485	6,341	995
Research and development	1,530	907	2,999	1,660
General and administrative	1,696	326	2,668	582
Operating loss	(5,651)	(714)	(9,554)	(1,185)
Interest and other income	66	1	68	7
Interest expense	(1)	(2)	(3)	(2)
Gain on the extinguishment of debt	635	0	635	0
Net loss	(4,951)	(715)	(8,854)	(1,180)
Preferred stock dividends accrued	0	(33)	0	(66)
Net loss attributable to common stockholders	$ (4,951)	$ (748)	$ (8,854)	$ (1,246)
Net loss per share attributable to common stockholders:
Basic	$ (0.28)	$ (0.05)	$ (0.50)	$ (0.09)
Diluted	$ (0.28)	$ (0.05)	$ (0.50)	$ (0.09)
Weighted average common shares outstanding:
Basic	17,620	13,784	17,581	13,743
Diluted	17,620	13,784	17,581	13,743