CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Revenues	$ 23,002	$ 23,099	$ 66,351	$ 75,456
Cost of revenues	8,088	8,587	23,597	28,417
Gross profit	14,914	14,512	42,754	47,039
Operating expenses:
Research and development	3,157	1,044	6,952	3,483
Sales and marketing	10,956	10,015	31,689	31,416
General and administrative	7,914	4,403	22,171	15,977
Amortization of intangible assets	187	172	551	516
Transaction-related expenses	66		1,546
Gain on settlement			(6,168)
Restructuring expenses	167	139	758	1,898
Gain on sale of assets				(856)
Total operating expenses	22,447	15,773	57,499	52,434
Operating loss	(7,533)	(1,261)	(14,745)	(5,395)
Interest and other expense, net	(1,754)	(1,822)	(5,183)	(5,677)
Loss from continuing operations before taxes	(9,287)	(3,083)	(19,928)	(11,072)
Income tax (benefit) provision	26	(7)	(1,697)	57
Loss from continuing operations	(9,313)	(3,076)	(18,231)	(11,129)
Loss from discontinued operations, net of applicable taxes	(42)	(61)	(116)	(220)
Net loss	$ (9,355)	$ (3,137)	$ (18,347)	$ (11,349)
Net loss per share, basic and diluted:
Continuing operations	$ (0.22)	$ (0.22)	$ (0.56)	$ (0.98)
Discontinued operations	0.00	(0.01)	0.00	(0.02)
Net loss per share, basic and diluted	$ (0.22)	$ (0.23)	$ (0.56)	$ (1.00)
Shares used in calculating basic and diluted net loss per share	42,497	13,938	32,658	11,349