CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) (USD $) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenues	$ 17,998	$ 28,013	$ 58,595	$ 103,826
Cost of revenues	4,341	5,876	13,914	19,153
Gross profit	13,657	22,137	44,681	84,673
Operating expenses:
Engineering and product development	239	484	967	1,416
Selling and marketing	14,277	21,021	46,371	73,894
General and administrative	3,450	8,245	12,463	23,731
Total operating expenses	17,966	29,750	59,801	99,041
Loss from continuing operations before interest and other financing expense, net	(4,309)	(7,613)	(15,120)	(14,368)
Interest and other financing expense, net	(332)	(4,009)	(936)	(4,443)
Loss from continuing operations before income taxes	(4,641)	(11,622)	(16,056)	(18,811)
Income tax expense	(658)	(287)	2,919	701
Loss from continuing operations	$ (5,299)	(11,909)	(13,137)	(18,110)
Discontinued operations:
Loss from discontinued operations, net of taxes		$ (3,034)	(6,708)	$ (4,658)
Gain on sale of discontinued operations, net of taxes	$ 190		10,783
Net loss	$ (5,109)	$ (14,943)	$ (9,062)	$ (22,768)
Basic and diluted net loss per share:
Continuing operations (in dollars per share)	$ (0.25)	$ (0.64)	$ (0.66)	$ (0.97)
Discontinued operations (in dollars per share)	0.01	(0.16)	(0.45)	(0.25)
Basic and diluted net income (loss) per share (in dollars per share)	$ (0.24)	$ (0.8)	$ (1.11)	$ (1.22)
Shares used in computing basic and diluted net loss per share (in shares)	21,488,832	18,724,419	19,958,623	18,722,459
Other comprehensive loss:
Foreign currency translation adjustments	$ (745)	$ (1,678)	$ (568)	$ (649)
Comprehensive loss	$ (5,854)	$ (16,621)	$ (9,630)	$ (23,417)