CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Revenues	$ 7,272	$ 7,620
Cost of revenues	2,733	3,422
Gross profit	4,539	4,198
Operating expenses:
Engineering and product development	475	525
Selling and marketing	3,150	3,710
General and administrative	1,601	2,101
Total operating expenses	5,226	6,336
Operating loss before other income (expense), net	(687)	(2,138)
Other income (expense), net:
Interest expense, net	(1,346)	(1,218)
Change in fair value of warrant liability	(132)	1,985
Other income (expense), net	(1,478)	767
Loss before income taxes	(2,165)	(1,371)
Income tax expense	(70)	(66)
Net loss	$ (2,235)	$ (1,437)
Net loss per share:
Basic (in dollars per share)	$ (1.03)	$ (0.70)
Diluted (in dollars per share)	$ (1.03)	$ (1.30)
Shares used in computing net loss per share:
Basic (in shares)	2,176,731	2,067,931
Diluted (in shares)	2,176,731	2,661,585