CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenues	$ 11,243	$ 19,924	$ 22,476	$ 40,598
Cost of revenues	3,354	4,915	6,108	9,573
Gross profit	7,889	15,009	16,368	31,025
Operating expenses:
Engineering and product development	343	389	657	727
Selling and marketing	6,425	16,161	14,228	32,094
General and administrative	2,932	4,971	6,897	9,014
Loss on sale of assets			843
Total operating expenses	9,700	21,521	22,625	41,835
Loss from continuing operations before interest and other financing expense, net	(1,811)	(6,512)	(6,257)	(10,810)
Interest and other financing expense, net	(292)	56	(625)	(604)
Loss from continuing operations before income taxes	(2,103)	(6,456)	(6,882)	(11,414)
Income tax benefit (expense)	(135)	3,941	(228)	3,577
Loss from continuing operations	(2,238)	(2,515)	(7,110)	(7,837)
Discontinued operations:
Loss from discontinued operations, net of taxes	(125)	(2,058)	(125)	(6,709)
Gain on sale of discontinued operations, net of taxes		10,634		10,593
Net loss	$ (2,363)	$ 6,061	$ (7,235)	$ (3,953)
Basic and diluted net loss per share:
Continuing operations (in dollars per share)	$ (0.10)	$ (0.12)	$ (0.35)	$ (0.39)
Discontinued operations (in dollars per share)	(0.01)	0.4		(0.19)
Basic (in dollars per share)	$ (0.11)	$ 0.28	$ (0.35)	$ (0.20)
Shares used in computing basic and diluted net loss per share	20,768,571	21,488,832	20,837,998	20,308,391
Other comprehensive (loss) income:
Foreign currency translation adjustments	$ (670)	$ 1,386	$ (758)	$ 176
Comprehensive loss	$ (3,033)	$ 7,447	$ (7,993)	$ (3,469)