CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues, net	$ 5,827	$ 6,730
Cost of revenues	2,114	2,331
Gross profit	3,713	4,399
Operating expenses:
Engineering and product development	384	292
Selling and marketing	2,932	2,953
General and administrative	2,789	2,102
Total operating expenses	6,105	5,347
Income (loss) from operations	(2,392)	(948)
Other (expense) income, net:
Interest (expense) income, net	(22)	1
Other (expense) income, net	(22)	1
Loss before income taxes	(2,414)	(947)
Income tax expense	(4)	(88)
Net loss	$ (2,418)	$ (1,035)
Loss per common share:
Basic (in dollars per share)	$ (0.07)	$ (0.03)
Diluted (in dollars per share)	$ (0.07)	$ (0.03)
Shares used in computing loss per common share:
Basic (in shares)	33,802,129	33,164,321
Diluted (in shares)	33,802,129	33,164,321
Loss per Preferred Series C share basic and diluted (in dollars per share)	$ 0	$ (11.42)
Shares used in computing loss per basic and diluted Preferred Series C shares (in shares)	0	1,480
Preferred Series C Shares [Member]
Other (expense) income, net:
Loss attributable to each class	$ 0	$ (17)
Loss per common share:
Basic (in dollars per share)	$ 0	$ (11.42)
Diluted (in dollars per share)	$ 0	$ (11.42)
Common Shares [Member]
Other (expense) income, net:
Net loss	$ 0	$ 0
Loss attributable to each class	$ (2,418)	$ (1,018)
Loss per common share:
Basic (in dollars per share)	$ (0.07)	$ (0.03)
Diluted (in dollars per share)	$ (0.07)	$ (0.03)