Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Amortization of deferred financing costs	$ 6,000	$ 3,100	$ 3,200
Predecessor
Cash flows from operating activities:
Net loss	(123,373)	(241,745)	(8,341)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Depreciation and amortization	218,205	241,471	217,480
Goodwill impairment	646	81,877	34,703
Bargain purchase gain	(662)	0	0
Accretion on asset retirement obligation	147	134	132
Change in allowance for doubtful accounts	(812)	638	(1,643)
Amortization of deferred financing costs	7,952	3,622	3,176
Amortization of premium on notes	(257)	(261)	(242)
Non-cash compensation	27,723	13,728	14,714
Loss on disposal of assets	1,014	1,602	1,974
Deferred income taxes	(4,403)	(131,171)	87
Reorganization items, non-cash	(332,854)	0	0
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(5,712)	144,430	(41,143)
Inventories	2,112	7,846	(9,798)
Prepaid expenses and other current assets	(239)	(740)	(14,435)
Other assets	(1,094)	(767)	(1,810)
Accounts payable	(6,563)	3,903	5,110
Income tax receivable	557	1,293	(204)
Other liabilities	(4,449)	1,109	11,303
Accrued expenses	70,573	(31,430)	13,473
Net cash (used in) provided by operating activities	(151,489)	95,539	224,536
Cash flows from investing activities:
Purchase of property and equipment	(32,689)	(53,868)	(236,295)
Proceeds from sale of assets	3,284	8,109	39,835
Payments for other long-term assets	0	0	(879)
Payments for businesses, net of cash acquired	0	(16,730)	(16,090)
Net cash used in investing activities	(29,405)	(62,489)	(213,429)
Cash flows from financing activities:
Proceeds from debt	165,000	8,816	16,000
Proceeds from Debtor-in-Possession Financing	38,390	0	0
Payments of debt	(84,881)	(68,635)	(47,894)
Change in restricted cash	(2,429)	0	0
Proceeds from Rights Offering	125,000	0	0
Change in treasury stock	2,837	(5,742)	(12,733)
Tax withholding from exercise of stock options	0	(3)	(362)
Exercise of employee stock options	0	727	4,646
Deferred loan costs and other financing activities	(10,880)	(1,396)	(2,381)
Net cash provided by (used in) financing activities	233,037	(66,233)	(42,724)
Net increase (decrease) in cash and equivalents	52,143	(33,183)	(31,617)
Cash and cash equivalents - beginning of year	46,732	79,915	111,532
Cash and cash equivalents - end of year (2016: Successor; 2015 and 2014: Predecessor)		$ 46,732	$ 79,915
Successor
Cash flows from financing activities:
Cash and cash equivalents - end of year (2016: Successor; 2015 and 2014: Predecessor)	$ 98,875