CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net revenues	$ 72,878	$ 82,972	$ 219,576	$ 239,135
Operating costs and expenses:
Costs of sales and services, exclusive of depreciation and amortization	27,504	28,221	79,186	80,160
Costs of customer support	8,145	7,984	25,661	24,212
Sales, general and administrative	15,791	18,170	48,995	57,625
Depreciation and amortization	21,582	23,553	65,715	67,422
Exit activities, restructuring and impairments	3,792	2,347	5,439	3,140
Total operating costs and expenses	76,814	80,275	224,996	232,559
(Loss) income from operations	(3,936)	2,697	(5,420)	6,576
Interest expense	19,913	17,794	56,578	50,138
Loss on foreign currency, net	6	195	328	5
Total non-operating expenses	19,919	17,989	56,906	50,143
Loss before income taxes and equity in earnings of equity-method investment	(23,855)	(15,292)	(62,326)	(43,567)
(Benefit) provision for income taxes	(6)	162	(320)	404
Net loss	(23,849)	(15,454)	(62,006)	(43,971)
Less net income attributable to non-controlling interests	21	25	63	75
Net loss attributable to shareholders	(23,870)	(15,479)	(62,069)	(44,046)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(18)	(98)	152	24
Total other comprehensive (loss) income	(18)	(98)	152	24
Comprehensive loss	$ (23,888)	$ (15,577)	$ (61,917)	$ (44,022)
Basic and diluted net loss per share (in dollars per share)	$ (1.01)	$ (0.77)	$ (2.62)	$ (2.21)
Weighted average shares outstanding used in computing basic and diluted net loss per share (in shares)	23,671	20,206	23,703	19,968