Condensed Consolidated Statements of Cash Flow - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash flows from operating activities:
Net income	$ 44,613	$ 41,034
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	76,364	69,777
Accretion of asset retirement obligation	2,231	2,099
Stock-based compensation	4,724	4,911
Income attributable to sale of tax benefits, net of interest expense	(9,250)	(6,663)
Equity in losses (earnings) of investees	(512)	367
Mark-to-market of derivative instruments	186	939
Disposal of property, plant and equipment	(7)	(321)
Write-off of unsuccessful exploration and storage activities	2,082	516
Write-off of long-lived assets	8,112	0
Loss (gain) on severance pay fund asset	(111)	26
Changes in fair value of equity investments without a readily determinable fair value	(1,714)	0
Bargain purchase gain	(9,618)	0
Induced conversion expense	33,652	0
Loss (gain) on foreign currency exchange rates	345	(2,416)
Deferred income tax provision	(20,423)	(9,401)
Liability for unrecognized tax benefits	(18)	209
Gain from sale of a power plant	(24,756)	0
Changes in operating assets and liabilities, net of businesses acquired:
Receivables	(3,859)	(14,645)
Costs and estimated earnings in excess of billings on uncompleted contracts	(6,418)	8,452
Long-term costs and estimated earnings in excess of billings on uncompleted contracts	(4,659)	(15,122)
Inventories	1,112	(4,015)
Prepaid expenses and other	7,514	(4,571)
Change in operating lease right of use asset	1,389	1,165
Deposits and other	637	2,274
Accounts payable and accrued expenses	(13,610)	(11,821)
Billings in excess of costs and estimated earnings on uncompleted contracts	(8,096)	28,884
Liabilities for severance pay	397	659
Change in operating lease liabilities	(1,268)	(1,060)
Other long-term liabilities	(460)	(3,269)
Net cash provided by operating activities	78,579	88,010
Cash flows from investing activities:
Capital expenditures	(113,787)	(192,602)
Cash received from sale of a power plant	93,136	0
Investment in unconsolidated companies	(25,500)	(15,296)
Cash paid for business acquisition, net of cash acquired	(78,282)	0
Decrease (increase) in severance pay fund asset, net of payments to retired employees	(56)	(50)
Net cash used in investing activities	(124,489)	(207,948)
Cash flows from financing activities:
Proceeds from long-term loans, net of transaction costs	5,238	199,564
Proceeds from exercise of options by employees	0	754
Proceeds from issuance of convertible notes, net of transaction costs	976,500	0
Purchase of treasury stock	(24,395)	0
Proceeds related to tax monetization transactions	46,413	0
Prepayments of convertible notes	(310,862)	0
Proceeds from revolving credit lines with banks	414,000	330,000
Repayment of revolving credit lines with banks	(494,000)	(330,000)
Cash received from noncontrolling interest	5,473	10,276
Repayments of long-term debt	(70,636)	(57,708)
Cash paid to noncontrolling interest	(2,421)	(2,996)
Payments under finance lease obligations	(524)	(379)
Debt issuance costs	(8,628)	(3,385)
Cash dividends paid	(7,506)	(7,273)
Net cash provided by financing activities	528,652	138,853
Effect of exchange rate changes	(666)	19
Net change in cash and cash equivalents and restricted cash and cash equivalents	482,076	18,933
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	280,866	205,772
Cash and cash equivalents and restricted cash and cash equivalents at end of period	762,942	224,705
Supplemental non-cash investing and financing activities:
Change in accounts payable related to purchases of property, plant and equipment	(20,696)	(22,093)
Right of use assets obtained in exchange for new lease liabilities	$ 1,955	$ 1,469