Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net income	$ 20,939	$ 246,012
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	63,052	55,812
Gain on disposition of assets	(3,710)	(3,146)
Deferred tax provision	(3,752)	(200,658)
Stock-based compensation expense	7,305	8,082
Contract liabilities, net	5,292	(2,707)
Contract assets, net	(1,063)	(1,980)
Deferred contract costs, net	11,032	4,893
Other assets, noncurrent	1,346	2,577
Other liabilities, noncurrent	(587)	16,870
Other	1,691	1,501
Changes in operating assets and liabilities:
Accounts receivable	33,655	(25,996)
Prepaid expenses and other current assets	(6,173)	(6,122)
Current income tax assets	0	(85,266)
Accounts payable and accrued liabilities	(39,982)	3,965
Taxes payable	885	(3,094)
Net cash provided by operating activities	89,930	10,743
Investing activities:
Capital expenditures	(51,342)	(58,953)
Proceeds from disposition of assets, net of disposal costs	7,719	348
Net cash used in investing activities	(43,623)	(58,605)
Financing activities:
Borrowings under revolving credit facility	0	20,000
Repayments under revolving credit facility	0	(15,000)
Principal payments of finance leases	(8,894)	(10,503)
Net cash used in financing activities	(8,894)	(5,503)
Net change in cash, cash equivalents and restricted cash	37,413	(53,365)
Cash, cash equivalents and restricted cash, beginning of period	138,688	97,334
Cash, cash equivalents and restricted cash, end of period	$ 176,101	$ 43,969