CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS [Abstract]
Revenues, net	$ 29,855	$ 31,763
Cost of revenues	12,735	12,998
Gross profit	17,120	18,765
Operating expenses:
Engineering and product development	1,065	1,711
Selling and marketing	10,624	11,249
General and administrative	8,786	7,604
Total operating expenses	20,475	20,564
Income (loss) from operations	(3,355)	(1,799)
Other (expense) income, net:
Interest expense, net	(1,142)	(3,196)
Change in fair value of warrant liability	0	595
Change in fair value of embedded conversion feature	0	3,158
Other income, net	200	17
Income (loss) on extinguishment of debentures	0	(20,160)
Total other (expense) income, net	(942)	(19,586)
Income (loss) before income taxes	(4,297)	(21,385)
Income tax benefit (expense)	264	(129)
Net income (loss)	(4,033)	(21,514)
Loss attributable to common shares	(2,909)	(8,851)
Loss attributable to Preferred Series C shares	$ (1,124)	$ (12,663)
Loss per common share
Basic (in dollars per share)	$ (0.15)	$ (3.26)
Diluted (in dollars per share)	$ (0.15)	$ (3.26)
Shares used in computing loss per common share
Basic (in shares)	19,589,031	2,713,782
Diluted (in shares)	19,589,031	2,713,782
Loss per Preferred Series C share - basic and diluted (in dollars per share)	$ (55.20)	$ (1,212.47)
Shares used in computing loss per basic and diluted Preferred Series C share (in shares)	20,368	10,444
Other comprehensive loss:
Foreign currency translation adjustments	$ 0	$ (2)
Comprehensive loss	$ (4,033)	$ (21,516)