CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenues, net	$ 6,730	$ 7,483
Cost of revenues	2,331	2,874
Gross profit	4,399	4,609
Operating expenses:
Engineering and product development	292	304
Selling and marketing	2,953	3,066
General and administrative	2,102	2,480
Total operating expenses	5,347	5,850
Loss from operations	(948)	(1,241)
Other income (expense), net:
Interest income (expense), net	1	(135)
Other (expense) income, net	1	(135)
Loss before income taxes	(947)	(1,376)
Income tax (expense) benefit	(88)	43
Net loss	(1,035)	(1,333)
Loss attributable to common shares	(1,018)	(1,216)
Loss attributable to Preferred Series C shares	$ (17)	$ (117)
Loss per common share:
Basic (in dollars per share)	$ (0.03)	$ (0.04)
Diluted (in dollars per share)	$ (0.03)	$ (0.04)
Shares used in computing loss per common share:
Basic (in shares)	33,164,321	30,703,501
Diluted (in shares)	33,164,321	30,703,501
Loss per Preferred Series C share - basic and diluted (in dollars per share)	$ (11.42)	$ (14.72)
Shares used in computing loss per basic and diluted Preferred Series C Shares (in shares)	1,480	7,944