CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net revenue	$ 982,223	$ 922,654	$ 696,473
Cost of revenue (excluding depreciation expense)	721,308	671,901	489,823
Gross profit	260,915	250,753	206,650
Other operating expenses	165,998	166,552	127,200
Bad debt expense	41,042	79,547	19,516
General and administrative expenses	42,524	49,314	47,897
Impairment of goodwill	251,850	0	0
Restructuring, integration, and other expenses, net	24,405	30,206	18,062
Depreciation and amortization expense	22,743	22,943	20,226
Loss from continuing operations	(287,647)	(97,809)	(26,251)
Interest expense, net	37,313	40,918	44,130
Loss from continuing operations, before income taxes	(324,960)	(138,727)	(70,381)
Income tax provision (benefit)	(21,532)	11,193	1,260
Loss from continuing operations, net of income taxes	(303,428)	(149,920)	(71,641)
Income from discontinued operations, net of income taxes	3,721	2,452	1,987
Net loss	(299,707)	(147,468)	(69,654)
Accrued dividends on preferred stock	(6,120)	0	0
Deemed dividends on preferred stock	(3,690)	0	0
Loss attributable to common stockholders	$ (309,517)	$ (147,468)	$ (69,654)
Loss per common share:
Loss from continuing operations, basic and diluted (in USD per share)	$ (4.56)	$ (2.19)	$ (1.11)
Income (loss) from discontinued operations, basic and diluted (in USD per share)	0.05	0.04	0.03
Income (loss), basic and diluted (in USD per share)	$ (4.51)	$ (2.15)	$ (1.08)
Weighted average common shares outstanding, basic and diluted	68,710	68,476	64,560