Condensed Consolidated Statements of Cash Flow - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities:
Net income	$ 93,941	$ 88,616
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	214,789	192,813
Accretion of asset retirement obligation	6,379	5,839
Stock-based compensation	14,474	14,887
Income attributable to sale of tax benefits, net of interest expense	(20,612)	(24,365)
Equity in earnings of investees	(861)	(437)
Mark-to-market of derivative instruments	(1,206)	870
Disposal of property, plant and equipment	(317)	63
Write-off of unsuccessful exploration and storage activities	1,144	1,456
Write-off of long-lived assets	0	1,280
Gain on severance pay fund asset	(167)	(43)
Gain on foreign currency exchange rates	(8,139)	(218)
Deferred income tax provision	(22,036)	(30,601)
Liability for unrecognized tax benefits	853	(813)
Changes in operating assets and liabilities, net of businesses acquired:
Receivables	19,139	42,527
Costs and estimated earnings in excess of billings on uncompleted contracts	6,623	(12,978)
Long-term costs and estimated earnings in excess of billings on uncompleted contracts	(40,063)	(12,252)
Inventories	(6,512)	(2,371)
Prepaid expenses and other	(1,535)	(10,713)
Change in operating lease right of use asset	3,741	2,950
Deposits and other	2,527	(3,518)
Accounts payable and accrued expenses	(34,734)	7,022
Billings in excess of costs and estimated earnings on uncompleted contracts	8,196	(8,664)
Liabilities for severance pay	890	(1,610)
Change in operating lease liabilities	(3,656)	(5,730)
Other long-term liabilities	(2,796)	8,290
Net cash provided by operating activities	230,061	252,300
Cash flows from investing activities:
Capital expenditures	(474,693)	(359,941)
Investment in unconsolidated companies	(16,296)	(1,815)
Buyout of Class B membership in Opal Geo	0	(9,800)
Cash paid for business acquisition, net of cash acquired	(88,650)	(274,632)
Decrease (increase) in severance pay fund asset, net of payments to retired employees	(158)	1,073
Net cash used in investing activities	(579,797)	(645,115)
Cash flows from financing activities:
Proceeds from long-term loans, net of transaction costs	444,580	442,639
Proceeds from exercise of options by employees	0	150
Proceeds from issuance of convertible notes, net of transaction costs	0	44,203
Proceeds related to tax monetization transactions	109,828	0
Proceeds from revolving credit lines with banks	1,448,500	134,500
Repayment of revolving credit lines with banks	(1,413,500)	(154,500)
Cash received from noncontrolling interest	10,276	12,251
Repayments of long-term debt	(203,264)	(164,616)
Cash paid to noncontrolling interest	(7,388)	(6,075)
Payments under finance lease obligations	(1,284)	(1,023)
Debt issuance costs	(16,837)	(3,652)
Cash dividends paid	(21,830)	(21,847)
Net cash provided by financing activities	349,081	282,030
Effect of exchange rate changes	620	(210)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(35)	(110,995)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	205,772	287,770
Cash and cash equivalents and restricted cash and cash equivalents at end of period	205,737	176,775
Supplemental non-cash investing and financing activities:
Change in accounts payable related to purchases of property, plant and equipment	(11,197)	(36,245)
Right of use assets obtained in exchange for new lease liabilities	$ 7,789	$ 9,045