Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net loss	$ (265,319)	$ (186,561)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	164,141	181,488
Goodwill impairment	646	81,877
Bargain purchase gain on acquisition	(662)	0
Accretion on asset retirement obligation	109	99
Change in allowance for doubtful accounts	(690)	261
Amortization of deferred financing costs	6,085	2,831
Amortization of premium on notes	(209)	(194)
Non-cash compensation	7,355	10,537
Loss on disposal of assets	133	1,119
Deferred income taxes	(4,403)	(101,366)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	7,038	122,234
Inventories	3,274	5,658
Income tax receivable	555	804
Prepaid expenses and other current assets	1,245	(1,729)
Other assets	(837)	(535)
Accounts payable	(13,962)	(3,687)
Other liabilities	(4,770)	4,133
Accrued expenses	28,466	(23,898)
Net cash (used in) provided by operating activities	(71,805)	93,071
Cash flows from investing activities:
Purchase of property and equipment	(22,907)	(47,288)
Proceeds from sale of assets	2,781	7,558
Payments for businesses, net of cash acquired	0	(16,730)
Net cash used in investing activities	(20,126)	(56,460)
Cash flows from financing activities:
Payments of debt	(37,962)	(55,367)
Proceeds from debt	165,000	0
Change in restricted cash	(28,677)
Purchase of treasury stock	(640)	(4,626)
Tax withholding from exercise of stock options	0	(3)
Exercise of employee stock options	0	727
Deferred loan costs and other financing activities	(18,184)	(1,285)
Net cash provided by (used in) financing activities	79,537	(60,554)
Net decrease in cash and equivalents	(12,394)	(23,943)
Cash and cash equivalents - beginning of period	46,732	79,915
Cash and cash equivalents - end of period	$ 34,338	$ 55,972