UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net revenue	$ 232,462	$ 246,897	$ 470,924	$ 491,254
Cost of revenue (excluding depreciation expense)	168,298	182,079	342,528	361,481
Gross profit	64,164	64,818	128,396	129,773
Other operating expenses	40,619	43,314	80,277	84,929
Bad debt expense	4,279	15,165	11,870	23,511
General and administrative expenses	9,414	11,866	20,465	23,565
Impairment of goodwill	0	238,000	0	238,000
Restructuring, acquisition, integration, and other expenses, net	4,291	5,969	6,958	9,673
Depreciation and amortization expense	4,252	6,247	8,790	12,041
Interest expense, net	9,469	9,080	18,881	18,243
Gain on disposition of property and equipment	0	0	(939)	0
Loss from continuing operations, before income taxes	(8,160)	(264,823)	(17,906)	(280,189)
Income tax expense (benefit)	149	(19,921)	172	(17,993)
Loss from continuing operations, net of income taxes	(8,309)	(244,902)	(18,078)	(262,196)
Income (loss) from discontinued operations, net of income taxes	75	94	308	(2,285)
Net loss	(8,234)	(244,808)	(17,770)	(264,481)
Accrued dividends on preferred stock	(2,056)	(1,805)	(4,054)	(2,258)
Deemed dividends on preferred stock	(173)	(2,186)	(345)	(3,350)
Loss attributable to common stockholders	$ (10,463)	$ (248,799)	$ (22,169)	$ (270,089)
Loss per common share:
Loss from continuing operations, basic and diluted (in dollars per share)	$ (0.14)	$ (3.62)	$ (0.32)	$ (3.90)
Loss from discontinued operations, basic and diluted (in dollars per share)	0.00	0.00	0.00	(0.03)
Loss per common share, basic and diluted (in dollars per share)	$ (0.14)	$ (3.62)	$ (0.32)	$ (3.93)
Weighted average common shares outstanding
Weighted average number of common shares outstanding, basic and diluted (in shares)	73,186	68,698	70,978	68,668