CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenues	$ 22,042	$ 24,379	$ 43,349	$ 52,357
Cost of revenues	7,772	8,631	15,509	19,830
Gross profit	14,270	15,748	27,840	32,527
Operating expenses:
Research and development	2,009	990	3,795	2,439
Sales and marketing	10,673	10,298	20,733	21,401
General and administrative	7,815	5,351	14,257	11,574
Amortization of intangible assets	187	172	364	344
Transaction-related expenses	(62)		1,480
Gain on settlement			(6,168)
Restructuring expenses	193	528	591	1,759
Gain on sale of assets		(856)		(856)
Total operating expenses	20,815	16,483	35,052	36,661
Operating loss	(6,545)	(735)	(7,212)	(4,134)
Other income (expense):
Interest expense, net	(1,709)	(1,881)	(3,416)	(3,862)
Other income (expense), net	(75)	2	(13)	7
Total other income (expense)	(1,784)	(1,879)	(3,429)	(3,855)
Loss from continuing operations before taxes	(8,329)	(2,614)	(10,641)	(7,989)
Income tax (benefit) provision	(1,265)	15	(1,723)	64
Loss from continuing operations	(7,064)	(2,629)	(8,918)	(8,053)
Loss from discontinued operations, net of applicable taxes	(12)	(68)	(74)	(159)
Net loss	$ (7,076)	$ (2,697)	$ (8,992)	$ (8,212)
Net loss per share, basic and diluted:
Continuing operations	$ (0.21)	$ (0.24)	$ (0.32)	$ (0.80)
Discontinued operations	0.00	(0.01)	0.00	(0.02)
Net loss per share, basic and diluted	$ (0.21)	$ (0.24)	$ (0.33)	$ (0.82)
Shares used in calculating basic and diluted net loss per share	34,030	11,047	27,656	10,033