Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows From Operating Activities:
Net income	$ 194,143	$ 242,180
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	114,396	114,379
Amortization of debt issuance costs and discounts	4,608	4,685
Deferred income tax provision	62,139	78,056
Equity-based compensation	12,809	13,975
Other, including loss on sale or disposal of assets, net	22,236	11,906
Changes in assets and liabilities:
Accounts receivable	(13,181)	1,160
Inventories	413	(30,739)
Prepaid expenses and other current assets	3,699	(4,401)
Accounts payable and accrued expenses	(6,823)	11,176
Accrued salaries, wages and benefits	6,989	(2,996)
Deferred revenue	(4,383)	17,815
Other accrued liabilities	9,095	7,779
Right of use assets and operating lease liabilities	329	469
Other assets and liabilities	(8,012)	3,430
Net cash provided by operating activities	398,457	468,874
Cash Flows From Investing Activities:
Capital expenditures	(234,218)	(150,729)
Net cash used in investing activities	(234,218)	(150,729)
Cash Flows From Financing Activities:
Repayments of long-term debt	(9,000)	(9,000)
Proceeds from draws on revolving credit facility	20,000
Repayments of revolving credit facility	(20,000)
Purchase of treasury stock	(17,861)	(617,756)
Payment of tax withholdings on equity-based compensation through shares withheld	(6,561)	(22,182)
Exercise of stock options	2,738	2,695
Debt issuance costs		(469)
Other financing activities	(649)	(427)
Net cash used in financing activities	(31,333)	(647,139)
Change in Cash and Cash Equivalents, including Restricted Cash	132,906	(328,994)
Cash and Cash Equivalents, including Restricted Cash—Beginning of period	82,320	444,486
Cash and Cash Equivalents, including Restricted Cash—End of period	215,226	115,492
Supplemental Disclosure of Noncash Investing and Financing Activities
Capital expenditures in accounts payable	34,466	32,671
Right-of-use assets obtained in exchange for financing lease obligations	$ 2,900	$ 5,298