Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (2,785)	$ (894)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, accretion, and amortization of intangible assets	44,813	44,301
Amortization of deferred financing costs and note discount	3,308	2,976
Share-based compensation expense	2,445	2,197
Deferred income tax (benefit)	(281)	(4,060)
Loss on disposal and impairment of assets	5,420	3,194
Other reserves and non-cash items	2,368	(1,198)
Changes in assets and liabilities:
Decrease in accounts and notes receivable, net	12,633	215
Increase in prepaid expenses, deferred costs, and other current assets	(17,995)	(2,726)
Increase in inventory, net	(1,424)	(1,037)
Increase in other assets	(118)	(2,635)
Decrease in accounts payable	(11,581)	(24,206)
Increase in accrued liabilities	18,661	9,906
Decrease in other liabilities	(6,031)	(3,325)
Net cash provided by operating activities	49,433	22,708
Cash flows from investing activities:
Additions to property and equipment	(20,739)	(38,561)
Acquisitions, net of cash acquired		(484,602)
Net cash used in investing activities	(20,739)	(523,163)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facility	143,502	624,199
Repayments of borrowings under revolving credit facility	(150,518)	(133,399)
Tax payments related to share-based compensation	(2,379)	(7,602)
Proceeds from exercises of stock options		3
Net cash (used in) provided by financing activities	(9,395)	483,201
Effect of exchange rate changes on cash, cash equivalents and restricted cash	684	(1,163)
Net increase (decrease) in cash, cash equivalents and restricted cash	19,983	(18,417)
Cash, cash equivalents and restricted cash at beginning of period	99,817	105,747
Cash, cash equivalents and restricted cash at end of period	119,800	87,330
Supplemental disclosure of cash flow information:
Cash paid for interest	7,553	8,277
Cash (refund) paid for income taxes	$ (7,138)	$ 299

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