Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 654,645	$ 147,448
Restricted cash and cash equivalents (primarily related to VIEs)	108,297	133,418
Receivables:
Trade less allowance for credit losses of $474 and $308, respectively (primarily related to VIEs)	170,917	164,772
Other	31,333	36,711
Inventories	45,561	45,268
Costs and estimated earnings in excess of billings on uncompleted contracts	35,671	30,011
Prepaid expenses and other	35,801	40,141
Total current assets	1,082,225	597,769
Investment in unconsolidated companies	200,901	162,111
Deposits and other (primarily related to VIEs)	157,536	137,744
Deferred income taxes	127,557	138,903
Property, plant and equipment, net ($3,584,646 and $3,460,079 related to VIEs, respectively)	3,792,223	3,672,569
Construction-in-process ($305,196 and $392,644 related to VIEs, respectively)	923,262	1,048,174
Operating leases right of use ($24,832 and $17,236 related to VIEs, respectively)	48,976	41,756
Finance leases right of use (none related to VIEs)	4,458	4,690
Intangible assets, net	267,224	274,548
Goodwill	168,076	168,244
Total assets	6,772,438	6,246,508
Current liabilities:
Accounts payable and accrued expenses	190,710	234,757
Short term revolving credit lines with banks (full recourse)	0	80,000
Commercial paper (less deferred financing costs of $16 and $17, respectively)	99,984	99,983
Convertible senior notes (less deferred financing costs of $5,463)	360,112	0
Billings in excess of costs and estimated earnings on uncompleted contracts	5,256	13,159
Current portion of long-term debt:
Limited and non-recourse (primarily related to VIEs)	125,211	79,885
Full recourse	214,301	214,207
Current portion of financing liability	9,962	9,749
Operating lease liabilities	5,357	4,764
Finance lease liabilities	1,807	1,884
Total current liabilities	1,012,700	738,388
Long-term debt, net of current portion:
Limited and non-recourse (primarily related to VIEs and less deferred financing costs of $12,906 and $13,488, respectively)	586,703	645,803
Full recourse (less deferred financing costs of $3,961 and $4,248, respectively)	959,349	1,009,090
Convertible senior notes (less deferred financing costs of $19,089 and $4,103, respectively)	805,911	472,334
Financing liability	203,822	206,647
Operating lease liabilities	36,501	29,760
Finance lease liabilities	2,713	2,850
Liability associated with sale of tax benefits	181,384	190,168
Deferred income taxes	72,467	68,661
Liability for unrecognized tax benefits	10,360	10,378
Liabilities for severance pay	12,339	11,942
Asset retirement obligation	138,334	135,574
Other long-term liabilities	31,308	33,637
Total liabilities	4,053,890	3,555,232
Commitments and contingencies (Note 9)
Redeemable noncontrolling interest	10,088	10,402
The Company's stockholders' equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 61,935,012 and 61,104,078 shares issued; 61,451,752 and 60,845,411 shares outstanding, respectively	62	61
Additional paid-in capital	1,666,043	1,654,635
Treasury stock, at cost (483,260 and 258,667 shares held, respectively)	(42,359)	(17,964)
Retained earnings	945,905	909,343
Accumulated other comprehensive income (loss)	1,288	(2,132)
Total stockholders' equity attributable to Company's stockholders	2,570,939	2,543,943
Noncontrolling interest	137,521	136,931
Total equity	2,708,460	2,680,874
Total liabilities, redeemable noncontrolling interest and equity	$ 6,772,438	$ 6,246,508