Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Sales, net	$ 16,732	$ 17,699	$ 33,991	$ 32,382
Cost of sales	6,690	6,889	13,417	12,338
Gross profit	10,042	10,810	20,574	20,044
Operating expenses:
Sales and marketing	8,021	6,232	16,258	12,490
Research and development	1,245	1,004	2,323	1,791
General and administrative	7,163	9,128	16,112	18,679
Total operating expenses	16,429	16,364	34,693	32,960
Operating loss	(6,387)	(5,554)	(14,119)	(12,916)
Interest expense, net	(10)	(12)	(18)	(31)
Net loss	$ (6,397)	$ (5,566)	$ (14,137)	$ (12,947)
Basic loss per common share (in dollars per share)	$ (0.09)	$ (0.08)	$ (0.21)	$ (0.20)
Diluted loss per common share (in dollars per share)	$ (0.09)	$ (0.08)	$ (0.21)	$ (0.20)
Basic weighted average common shares outstanding (in shares)	68,336	67,986	68,325	66,086
Diluted weighted average common shares outstanding (in shares)	68,336	67,986	68,325	66,086