Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net income	$ 126,990	$ 131,241	$ 133,137
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	292,124	262,863	224,797
Accretion of asset retirement obligation	8,330	7,747	6,164
Stock-based compensation	19,390	20,197	15,478
Income attributable to sale of tax benefits, net of interest expense	(26,252)	(22,145)	(23,462)
Equity in losses (earnings) of investees, net	(960)	425	(35)
Mark-to-market of derivative instruments	550	856	(2,206)
Loss (gain) on disposal of property, plant and equipment	(303)	101	35
Write-off of unsuccessful exploration and storage activities	1,446	3,930	3,733
Impairment of long-lived assets	12,064	1,280	0
Loss (gain) on severance pay fund asset	(294)	(413)	154
Loss (gain) on foreign currency exchange rate	(7,568)	3,428	0
Deferred income tax provision	(33,174)	5,300	(6,017)
Liability for unrecognized tax benefits	4,106	(2,401)	2,114
Changes in operating assets and liabilities, net of businesses acquired:
Receivables	4,468	27,172	(97,640)
Costs and estimated earnings in excess of billings on uncompleted contracts	(210)	(11,614)	(1,962)
Long-term costs and estimated earnings in excess of billings on uncompleted contracts	(48,930)	(26,033)	0
Inventories	(7,176)	6,945	(22,205)
Prepaid expenses and other	821	(8,510)	(3,248)
Change in operating lease right of use asset	5,093	4,368	3,761
Deposits and other	5,759	(4,491)	(7,900)
Accounts payable and accrued expenses	(1,782)	11,426	68,590
Billings in excess of costs and estimated earnings on uncompleted contracts	(11,322)	5,330	9,884
Liabilities for severance pay	1,454	(1,356)	(989)
Change in operating lease liabilities	(6,387)	(9,472)	(3,435)
Other liabilities, net	(3,136)	4,745	10,653
Net cash provided by operating activities	335,101	410,919	309,401
Cash flows from investing activities:
Capital expenditures	(619,776)	(487,678)	(618,383)
Investment in unconsolidated companies	(17,796)	(18,969)	(10,181)
Cash paid for acquisition of a business, net of cash acquired	(88,650)	(274,631)	0
Decrease (increase) in severance pay fund asset, net of payments made to retired employees	(213)	1,024	221
Net cash used in investing activities	(726,435)	(780,254)	(628,343)
Cash flows from financing activities:
Proceeds from long-term loans, net of transaction costs	548,501	514,630	149,837
Proceeds from exercise of options by employees	0	0	314
Proceeds from issuance of common stock, net of stock issuance costs	0	0	341,671
Proceeds from issuance of convertible notes, net of transaction costs	0	44,041	0
Proceeds related to tax monetization transactions	151,986	0	42,329
Proceeds from issuance of commercial paper, net of transaction costs	0	0	99,971
Proceeds from revolving credit lines with banks	1,973,500	185,500	55,000
Repayment of revolving credit lines with banks	(1,893,500)	(205,500)	(35,000)
Cash received from noncontrolling interest	10,276	12,251	7,341
Transaction with noncontrolling interest	0	(9,803)	(30,000)
Repayments of long-term debt and financing liability	(265,462)	(209,280)	(207,039)
Cash paid to noncontrolling interest	(7,834)	(6,373)	(9,856)
Payments under finance lease obligations	(1,840)	(1,383)	(1,963)
Deferred debt and tax monetization transactions issuance costs	(20,809)	(7,058)	(4,229)
Cash dividends paid	(29,072)	(29,109)	(28,412)
Net cash provided by (used in) financing activities	465,746	287,916	379,964
Effect of exchange rate changes on cash and cash equivalents and restricted cash and cash equivalents	682	(579)	72
Net change in cash and cash equivalents and restricted cash and cash equivalents	75,094	(81,998)	61,094
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	205,772	287,770	226,676
Cash and cash equivalents and restricted cash and cash equivalents at end of period	280,866	205,772	287,770
Supplemental disclosure of cash flow information:
Interest, net of interest capitalized	111,700	102,605	72,236
Income taxes, net of refunds	9,846	26,183	26,250
Supplemental non-cash investing and financing activities:
Increase (decrease) in accounts payable related to purchases of property, plant and equipment	(9,396)	(2,501)	(12,417)
Right of use assets obtained in exchange for new lease liabilities	15,851	13,360	6,402
Increase in asset retirement cost and asset retirement obligation	$ (5,696)	$ 740	$ 10,546