CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net revenue	$ 935,589	$ 982,223	$ 922,654
Cost of revenue (excluding depreciation expense)	669,958	721,308	671,901
Gross profit	265,631	260,915	250,753
Other operating expenses	170,718	165,998	166,552
Bad debt expense	26,799	41,042	79,547
General and administrative expenses	39,225	42,524	49,314
Change in fair value of equity linked liabilities	(10,450)	0	0
Impairment of goodwill	0	251,850	0
Restructuring, acquisition, integration, and other expenses, net	15,859	24,405	30,206
Depreciation and amortization expense	21,551	22,743	22,943
Interest expense	38,235	37,313	40,918
Gain on dispositions	(3,954)	0	0
Loss from continuing operations, before income taxes	(32,352)	(324,960)	(138,727)
Income tax provision (benefit)	2,015	(21,532)	11,193
Loss from continuing operations, net of income taxes	(34,367)	(303,428)	(149,920)
(Loss) income from discontinued operations, net of income taxes	(7,139)	3,721	2,452
Net loss	(41,506)	(299,707)	(147,468)
Accrued dividends on preferred stock	(8,392)	(6,120)	0
Deemed dividends on preferred stock	(692)	(3,690)	0
Loss attributable to common stockholders	$ (50,590)	$ (309,517)	$ (147,468)
Loss per common share:
Loss from continuing operations, basic and diluted (in USD per share)	$ (0.46)	$ (4.56)	$ (2.19)
(Loss) Income from discontinued operations, basic and diluted (in USD per share)	(0.08)	0.05	0.04
Net loss, basic and diluted (in USD per share)	$ (0.54)	$ (4.51)	$ (2.15)
Weighted average common shares outstanding, basic and diluted (in shares)	93,740	68,710	68,476