CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues	$ 27,978	$ 34,206
Cost of revenues	11,199	9,719
Gross profit	16,779	24,487
Operating expenses:
Research and development	1,449	3,641
Sales and marketing	11,103	14,940
General and administrative	6,223	9,004
Amortization of intangible assets	172	255
Restructuring expenses	1,231	89
Total operating expenses	20,178	27,929
Operating loss	(3,399)	(3,442)
Other income (expense):
Interest expense, net	(1,981)	(981)
Other income (expense), net	5	198
Total other income (expense)	(1,976)	(783)
Loss from continuing operations before taxes	(5,375)	(4,225)
Income tax provision	49	23
Loss from continuing operations	(5,424)	(4,248)
Loss from discontinued operations, net of applicable taxes	(91)	(2,369)
Net loss	$ (5,515)	$ (6,617)
Net loss per share, basic and diluted:
Continuing operations, net loss per share, basic and diluted (in dollars per share)	$ (0.60)	$ (0.50)
Discontinued operations, net loss per share, basic and diluted (in dollars per share)	(0.01)	(0.28)
Net loss per basic and diluted share (in dollars per share)	$ (0.61)	$ (0.78)
Shares used in calculating basic and diluted net loss per share (in shares)	9,005	8,466