Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows From Operating Activities:
Net loss	$ (56,519)	$ (37,020)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	38,013	39,450
Amortization of debt issuance costs and discounts	822	899
Deferred income tax benefit	(20,805)	(16,606)
Equity-based compensation	(3,601)	3,198
Other, including loss on sale or disposal of assets, net	(594)	45
Changes in assets and liabilities:
Accounts receivable	7,005	(2,329)
Inventories	(1,459)	(6,964)
Prepaid expenses and other current assets	(9,586)	(628)
Accounts payable and accrued expenses	13,720	1,715
Accrued salaries, wages and benefits	(3,156)	(1,737)
Deferred revenue	25,875	51,697
Other accrued liabilities	(28,349)	5,498
Right of use assets and operating lease obligations	133	128
Other assets and liabilities	(2,266)	342
Net cash (used in) provided by operating activities	(40,767)	37,688
Cash Flows From Investing Activities:
Capital expenditures	(49,249)	(47,937)
Other investing activities		50
Net cash used in investing activities	(49,249)	(47,887)
Cash Flows From Financing Activities:
Repayments of long-term debt	(3,876)	(3,877)
Proceeds from draws on revolving credit facility	272,500	55,000
Repayments of revolving credit facility	(10,000)	(20,000)
Purchase of treasury stock	(12,406)
Payment of tax withholdings on equity-based compensation through shares withheld	(3,160)	(3,606)
Exercise of stock options	203	715
Debt issuance costs	(234)
Other financing activities	(208)	(226)
Net cash provided by financing activities	242,819	28,006
Change in Cash and Cash Equivalents, including Restricted Cash	152,803	17,807
Cash and Cash Equivalents, including Restricted Cash—Beginning of period	40,925	35,007
Cash and Cash Equivalents, including Restricted Cash—End of period	193,728	52,814
Supplemental Disclosure of Noncash Investing and Financing Activities
Capital expenditures in accounts payable	41,208	49,620
Right-of-use assets obtained in exchange for financing lease obligations	$ 208	$ 1,230