CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]
Revenues	$ 8,702	$ 7,739	$ 15,974	$ 15,359
Cost of revenues	3,173	3,139	5,906	6,561
Gross profit	5,529	4,600	10,068	8,798
Operating expenses:
Engineering and product development	423	634	898	1,159
Selling and marketing	3,077	3,523	6,227	7,233
General and administrative	1,720	1,901	3,321	4,002
Total operating expenses	5,220	6,058	10,446	12,394
Operating profit (loss) before other income (expense), net	309	(1,458)	(378)	(3,596)
Other income (expense), net:
Interest expense, net	(1,575)	(1,178)	(2,921)	(2,396)
Change in fair value of warrant liability	128	3,199	(4)	5,184
Other income, net	6	(4)	6	(4)
Other income (expense), net	(1,441)	2,017	(2,919)	2,784
(Loss) income before income taxes	(1,132)	559	(3,297)	(812)
Income tax expense	(73)	(61)	(143)	(127)
Net (loss) income	$ (1,205)	$ 498	$ (3,440)	$ (939)
Net (loss) income per share:
Basic (in dollars per share)	$ (0.52)	$ 0.24	$ (1.53)	$ (0.45)
Diluted (in dollars per share)	$ (0.52)	$ (1.17)	$ (1.53)	$ (2.76)
Shares used in computing net (loss) income per share:
Basic (in shares)	2,327,041	2,117,897	2,252,301	2,092,914
Diluted (in shares)	2,327,041	2,311,047	2,252,301	2,216,181