Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows From Operating Activities:
Net income (loss)	$ 89,476	$ 44,788	$ (202,386)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Goodwill impairment charge			269,332
Depreciation and amortization	160,557	160,955	163,294
Amortization of debt issuance costs and discounts	3,446	4,461	4,812
Loss on impairment or disposal of assets, net	4,616	19,681	13,525
Loss on early extinguishment of debt and write-off of discounts and debt issuance costs		8,150	8,143
Deferred income tax provision (benefit)	37,998	16,894	(86,477)
Equity-based compensation	11,106	22,152	23,203
Changes in assets and liabilities:
Accounts receivable	10,865	(24,347)	(3,005)
Inventories	721	(4,620)	(3,285)
Prepaid expenses and other current assets	(27,359)	(2,275)	3,336
Accounts payable and accrued expenses	2,733	13,317	7,347
Accrued salaries, wages and benefits	(5,467)	6,051	(6,456)
Deferred revenue	665	25,611	2,368
Other accrued liabilities	57,684	3,417	(3,692)
Right-of-use assets and operating lease obligations	501
Other assets and liabilities	874	(300)	2,398
Net cash (used in) provided by operating activities	348,416	293,935	192,457
Cash Flows From Investing Activities:
Capital expenditures	(195,217)	(179,770)	(172,517)
Other investing activities, net	24	(259)	1,644
Net cash (used in) provided by investing activities	(195,193)	(180,029)	(170,873)
Cash Flows From Financing Activities:
Proceeds from the issuance of debt		543,935	998,306
Repayments of long-term debt	(15,506)	(565,592)	(1,026,909)
Proceeds from draw on revolving credit facility	294,000	95,000	95,649
Repayments of revolving credit facility	(274,000)	(80,000)	(105,000)
Purchase of treasury stock	(150,000)	(98,032)
Payment of tax withholdings on equity-based compensation through shares withheld	(4,841)	(3,977)	(2,088)
Exercise of stock options	3,795	4,282	11
Debt issuance costs		(8,086)	(15,390)
Other financing activities	(753)	(426)	(1,544)
Net cash provided by (used in) financing activities	(147,305)	(112,896)	(56,965)
Change in Cash and Cash Equivalents, including Restricted Cash	5,918	1,010	(35,381)
Cash and Cash Equivalents, including Restricted Cash—Beginning of year	35,007	33,997	69,378
Cash and Cash Equivalents, including Restricted Cash—End of year	40,925	35,007	33,997
Supplemental Disclosures of Noncash Investing and Financing Activities
Capital expenditures in accounts payable and accrued expenses	$ 39,538	$ 30,760	$ 24,626