Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating activities:
Net income (loss)	$ (62,183)	$ (239,393)	$ (209,467)
Reconciliation of net income (loss) to cash provided by operating activities:
Depreciation, amortization, and accretion	116,159	129,595	155,015
Impairments of long-lived assets	14,876	18,172	44,158
Impairment of goodwill	0	106,205	177,006
Provision (benefit) for deferred income taxes	(3,048)	(1,808)	(379)
Equity-based compensation expense	7,727	13,747	16,887
Provision for doubtful accounts	1,428	2,436	5,387
Excess decommissioning/abandoning costs	0	2,629	2,661
Other Noncash Income (Expense)	65	(1,724)	(4,271)
Amortization of deferred financing costs	4,743	4,141	3,961
Proceeds from Insurance Settlement, Operating Activities Reconciliation	(2,352)	0	0
Offering Costs of Preferred Units	37	4,066	0
Paid-in-Kind Interest	7,328	2,659	0
Liabilities, Fair Value Adjustment	2,975	(4,404)	0
Fair Value Adjustment of Warrants	(5,301)	2,106	0
Gain (Loss) on Disposition of Property Plant Equipment	674	5,461	4,375
Gain (Loss) on Extinguishment of Debt		(1,400)
Changes in operating assets and liabilities, net of assets acquired:
Accounts receivable	(55,197)	64,331	38,025
Inventories	(11,332)	1,384	70,431
Prepaid expenses and other current assets	(1,608)	3,348	(1,806)
Trade accounts payable and accrued expenses	58,937	(54,092)	(97,356)
Decommissioning liabilities	(565)	(4,040)	(10,305)
Other	(1,340)	(494)	2,888
Net cash provided by operating activities	64,595	55,659	197,002
Investing activities:
Purchases of property, plant, and equipment	(51,923)	(21,066)	(120,597)
Proceeds from sale of property, plant, and equipment	862	3,354	7,135
Proceeds from Insurance Settlement, Investing Activities	2,352	0	0
Other investing activities	616	3,456	(1,525)
Net cash provided by (used in) investing activities	(48,093)	(14,256)	(114,987)
Financing activities:
Proceeds from long-term debt	384,550	458,580	535,896
Principal payments on long-term debt	(384,100)	(689,783)	(598,070)
CCLP distributions	(18,826)	(28,956)	(37,816)
Proceeds from issuance of common stock, net of underwriters' discount	0	168,275	0
Proceeds from Convertible Debt, net of offering costs	0	66,935	0
Proceeds from sale of common stock and exercise of stock options	0	68	303
Payments Related to Tax Withholding for Share-based Compensation	(803)	(1,679)	(1,051)
Financing costs and other financing activities	(2,157)	(6,073)	(3,750)
Net cash provided by (used in) financing activities	(21,336)	(32,633)	(104,488)
Effect of exchange rate changes on cash	1,122	(1,987)	(2,854)
Increase (decrease) in cash and cash equivalents	(3,712)	6,783	(25,327)
Cash and cash equivalents at beginning of period	29,840	23,057	48,384
Cash and cash equivalents at end of period	26,128	29,840	23,057
Supplemental cash flow information:
Interest paid	46,286	54,506	52,491
Taxes paid (refunded)	$ 6,782	$ 4,254	$ 6,710