UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net revenue	$ 168,584	$ 217,810
Cost of revenue (excluding depreciation expense)	113,536	152,936
Gross profit	55,048	64,874
Other operating expenses	39,299	44,319
Bad debt expense	0	7,042
General and administrative expenses	10,669	9,266
Restructuring, acquisition, integration, and other expenses, net	1,882	3,223
Change in fair value of equity linked liabilities	(3,439)	0
Depreciation and amortization expense	6,486	7,165
Interest expense	13,395	12,659
Gain on dispositions	(305)	0
Loss from continuing operations, before income taxes	(12,939)	(18,800)
Income tax expense	48	619
Loss from continuing operations, net of income taxes	(12,987)	(19,419)
Loss from discontinued operations, net of income taxes	(30)	(299)
Net loss	(13,017)	(19,718)
Accrued dividends on preferred stock	(2,481)	(2,214)
Deemed dividends on preferred stock	(176)	(174)
Loss attributable to common stockholders	$ (15,674)	$ (22,106)
Loss per common share:
Loss from continuing operations, basic and diluted (in dollars per share)	$ (0.12)	$ (0.18)
Loss from discontinued operations, basic and diluted (in dollars per share)	0.00	0.00
Loss per common share, basic and diluted (in dollars per share)	$ (0.12)	$ (0.18)
Weighted average common shares outstanding, basic and diluted (in shares)	127,772	118,783