Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net (loss) income	$ (161,307)	$ 62,951
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation, accretion, and amortization of intangible assets	134,106	97,214
Amortization of deferred financing costs and note discount	9,317	8,636
Share-based compensation expense	9,971	15,780
Deferred income tax (benefit) expense	(6,198)	15,731
Loss (gain) on disposal and impairment of assets	26,170	(475)
Other reserves and non-cash items	(1,182)	686
Goodwill and intangible asset impairment	194,521
Changes in assets and liabilities:
Increase in accounts and notes receivable, net	(122)	(4,122)
Increase in prepaid expenses, deferred costs, and other current assets	(23,567)	(7,142)
Increase in inventory, net	(3,619)	(360)
Increase in other assets	(12,488)	(6,585)
(Decrease) increase in accounts payable	(20,951)	5,126
Increase in accrued liabilities	21,364	24,151
(Decrease) increase in other liabilities	(1,731)	2,340
Net cash provided by operating activities	164,284	213,931
Cash flows from investing activities:
Additions to property and equipment	(111,424)	(76,050)
Acquisitions, net of cash acquired	(487,077)	(19,701)
Proceeds from sale of assets and businesses		9,348
Net cash used in investing activities	(598,501)	(86,403)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facility	968,365	221,268
Repayments of borrowings under revolving credit facility	(827,351)	(311,361)
Proceeds from borrowings of long-term debt	300,000
Debt issuance costs	(5,476)
Tax payments related to share-based compensation	(8,359)
Proceeds from exercises of stock options	105	579
Additional tax benefit related to share-based compensation		338
Repurchase of common shares		(3,959)
Net cash provided by (used in) financing activities	427,284	(93,135)
Effect of exchange rate changes on cash	(5,103)	(1,169)
Net (decrease) increase in cash and cash equivalents	(12,036)	33,224
Cash and cash equivalents as of beginning of period	73,534	26,297
Cash and cash equivalents as of end of period	61,498	59,521
Supplemental disclosure of cash flow information:
Cash paid for interest	19,284	13,832
Cash paid for income taxes	$ 3,567	$ 9,499