Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities:
Net income	$ 362,065	$ 354,857	$ 357,422
Noncash items included in net income:
Depreciation and amortization	210,105	178,845	157,203
Allowance for credit losses	3,412	1,955	3,074
Deferred income taxes	63,221	10,070	21,634
Loss from property disposals, net	4,477	910	50
Stock-based compensation	14,243	11,636	8,827
Changes in operating assets and liabilities:
Accounts receivable	(14,661)	(23,391)	(16,624)
Accounts payable	(816)	10,752	(9,523)
Change in other assets and liabilities, net	(58,344)	32,311	(49,037)
Net cash provided by operating activities	583,702	577,945	473,026
Investing Activities:
Acquisition of property and equipment	(1,043,557)	(439,879)	(367,429)
Proceeds from disposal of property and equipment	2,694	2,727	1,917
Other	4,999	(11,544)	0
Net cash used in investing activities	(1,035,864)	(448,696)	(365,512)
Financing Activities:
Repayments of revolving credit facility	(1,060,100)	0	(1,000)
Borrowings of revolving credit facility	1,154,100	0	1,000
Borrowings on private shelf agreement	100,000	0	0
Proceeds from stock option exercises	2,574	4,875	4,511
Shares withheld for taxes	(9,107)	(9,216)	(11,752)
Repayment of finance leases	(10,193)	(14,520)	(19,471)
Other financing activity	(1,854)	(1,563)	0
Net cash (used in) provided by financing activities	175,420	(20,424)	(26,712)
Net Increase (Decrease) in Cash and Cash Equivalents	(276,742)	108,825	80,802
Cash and cash equivalents, beginning of year	296,215	187,390	106,588
Cash and cash equivalents, end of year	$ 19,473	$ 296,215	$ 187,390