CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Revenues	$ 6,466	$ 7,097
Cost of revenues	3,295	2,733
Gross profit	3,171	4,364
Operating expenses:
Engineering and product development	338	475
Selling and marketing	2,871	2,975
General and administrative	1,803	1,601
Total operating expenses	5,012	5,051
Operating loss before other income (expense), net	(1,841)	(687)
Other income (expense), net:
Interest expense, net	(363)	(1,346)
Other income (expense), net	21	(132)
Other income (expense), net	(342)	(1,478)
Income (loss) before income taxes	(2,183)	(2,165)
Income tax expense	40	70
Net loss	(2,223)	$ (2,235)
Common Stock [Member]
Net loss	$ (547)
Net loss per share - basic and diluted (in dollars per share)	$ (0.13)	$ (1.03)
Shares used in computing net loss per basic and diluted (in shares)	4,371,369	2,176,731
Series C Preferred Stock [Member]
Net loss	$ (1,676)
Net loss per share - basic and diluted (in dollars per share)	$ (46.54)	$ 0
Shares used in computing net loss per basic and diluted (in shares)	36,002	0