Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Condensed Consolidated Statements of Operations [Abstract]
Revenues, net	$ 7,041	$ 5,827
Cost of revenues	2,913	2,114
Gross profit	4,128	3,713
Operating expenses:
Engineering and product development	163	384
Selling and marketing	3,616	2,932
General and administrative	2,652	2,789
Total operating expenses	6,431	6,105
Loss from operations	(2,303)	(2,392)
Other income (expense):
Interest expense	(199)	(30)
Interest income	0	8
Other income (expense), net	(199)	(22)
Income (loss) before income taxes	(2,502)	(2,414)
Income tax expense	0	(4)
Net loss	$ (2,502)	$ (2,418)
Net loss per share of common stock - basic (in dollars per share)	$ (0.07)	$ (0.07)
Net loss per share of common stock - diluted (in dollars per share)	$ (0.07)	$ (0.07)
Weighted average shares of common stock outstanding - basic (in shares)	34,679,246	33,802,129
Weighted average shares of common stock outstanding - diluted (in shares)	34,679,246	33,802,129