CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Revenues	$ 31,757	$ 18,495
Cost of revenues	12,636	13,719
Gross profit	19,121	4,776
Operating expenses:
Engineering and product development	1,929	2,029
Selling and marketing	13,152	9,194
General and administrative	7,637	10,028
Total operating expenses	22,718	21,251
Operating loss before other income (expense), net	(3,597)	(16,475)
Other income (expense), net:
Interest expense, net	(4,900)	(10,200)
Change in fair value of warrant liability	5,396	1,814
Other income, net	21	33
Other income (expense), net	517	(8,353)
Loss before income taxes	(3,080)	(24,828)
Income tax expense	255	119
Net loss	(3,335)	(24,947)
Deemed dividend related to warrant modification	0	(2,962)
Net loss attributable to common stockholders	$ (3,335)	$ (27,909)
Net loss per share:
Basic (in dollars per share)	$ (0.31)	$ (3.27)
Diluted (in dollars per share)	$ (0.75)	$ (3.27)
Shares used in computing net loss per share:
Basic (in shares)	10,595,068	8,536,699
Diluted (in shares)	11,578,573	8,536,699
Other comprehensive income (loss):
Foreign currency translation adjustments	$ 1	$ 1
Comprehensive loss	$ (3,334)	$ (27,908)