Ormat (ORA) 10-K 24 Feb 23 2022 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 22, 2023	Jun. 30, 2022
Document Information [Line Items]
Entity Central Index Key	0001296445
Entity Registrant Name	ORMAT TECHNOLOGIES, INC.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	001-32347
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-0326081
Entity Address, Address Line One	6140 Plumas Street
Entity Address, City or Town	Reno
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89519-6075
City Area Code	775
Local Phone Number	356-9029
Title of 12(b) Security	Common Stock $0.001 Par Value
Trading Symbol	ORA
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 3,521,801,708
Entity Common Stock, Shares Outstanding		56,095,918
Auditor Firm ID	1309
Auditor Name	Kesselman & Kesselman
Auditor Location	Tel Aviv, Israel

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents		$ 95,872	$ 239,278
Marketable securities at fair value		0	43,343
Restricted cash and cash equivalents (primarily related to VIEs)		130,804	104,166
Receivables:
Trade less allowance for credit losses of $90 and $90, respectively (primarily related to VIEs)		128,818	122,944
Other		32,415	18,144
Inventories		22,832	28,445
Costs and estimated earnings in excess of billings on uncompleted contracts	[1]	16,405	9,692
Prepaid expenses and other		29,571	35,920
Total current assets		456,717	601,932
Investment in unconsolidated companies		115,693	105,886
Deposits and other		39,762	78,915
Deferred income taxes		161,365	143,450
Property, plant and equipment, net		2,493,457	2,294,973
Construction-in-process		893,198	721,483
Operating leases right of use		23,411	19,357
Finance leases right of use		3,806	6,414
Intangible assets, net		333,845	363,314
Goodwill		90,325	89,954
Total assets	[2],[3]	4,611,579	4,425,678
Current liabilities:
Accounts payable and accrued expenses		149,423	143,186
Billings in excess of costs and estimated earnings on uncompleted contracts		8,785	9,248
Current portion of long-term debt:
Limited and non-recourse (primarily related to VIEs):		64,044	61,695
Full recourse		101,460	313,846
Financing liability	[4]	16,270	10,835
Operating lease liabilities		2,347	2,564
Finance lease liabilities		1,581	2,782
Total current liabilities		343,910	544,156
Long-term debt, net of current portion:
Financing liability	[4]	225,759	242,029
Operating lease liabilities		19,788	16,462
Finance lease liabilities		2,262	4,361
Liability associated with sale of tax benefits		166,259	134,953
Deferred income taxes		83,465	84,662
Liability for unrecognized tax benefits		6,559	5,730
Liabilities for severance pay		12,833	15,694
Asset retirement obligation		97,660	84,891
Other long-term liabilities		3,317	4,951
Total liabilities		2,581,014	2,417,888
Commitments and contingencies (Note 21)
Redeemable noncontrolling interest		9,590	9,329
Equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 56,095,918 and 56,056,450 issued and outstanding as of December 31, 2022 and December 31, 2021, respectively		56	56
Additional paid-in capital		1,259,072	1,271,925
Treasury stock, at cost (258,667 and 0 shares held as of December 31, 2022 and 2021, respectively)		(17,964)	0
Retained earnings		623,907	585,209
Accumulated other comprehensive gain (loss)		2,500	(2,191)
Total stockholders' equity attributable to Company's stockholders		1,867,571	1,854,999
Noncontrolling interest		153,404	143,462
Total equity		2,020,975	1,998,461
Total liabilities, redeemable noncontrolling interest and equity		4,611,579	4,425,678
Senior Secured Notes [Member]
Long-term debt, net of current portion:
Limited and non-recourse (primarily related to VIEs and less deferred financing costs of $10,272 and $11,304, respectively)		521,885	539,664
Senior Unsecured Bonds [Member]
Long-term debt, net of current portion:
Full recourse (less deferred financing costs of $2,995 and $3,659, respectively)		676,512	740,335
Convertible Senior Notes [Member]
Long-term debt, net of current portion:
Convertible senior notes (less deferred financing costs of $10,445 and $0, respectively)		$ 420,805	$ 0
[1]Contract assets and contract liabilities are presented as "Costs and estimated earnings in excess of billings on uncompleted contracts" and "Billings in excess of costs and estimated earnings on uncompleted contracts", respectively, on the consolidated balance sheets. The contract liabilities balance at the beginning of the year was partially recognized as product revenues during the year ended December 31, 2022 as a result of performance obligations that were partially satisfied.[2]Electricity segment assets include goodwill in the amount of $85.3 million, $20.5 million and $20.1 million as of December 31, 2021, 2020 and 2019, respectively, $65.4 million of which was added in the third quarter of 2021 as a result of the Terra-Gen Transaction as further described under Note 2 to the consolidated financial statements. Energy Storage segment assets include goodwill in the amount of $4.6 million, $4.1 million and $0.0 million as of December 31, 2021, 2020 and 2019, respectively. No goodwill is included in the Product segment assets as of December 31, 2021, 2020 and 2019.[3]Including unconsolidated investments[4]the amounts presented exclude deferred financing costs, if any

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Trade, allowance for credit losses	$ 90	$ 90
Property, plant and equipment, net	2,493,457	2,294,973
Construction-in-process	893,198	721,483
Operating leases right of use	23,411	19,357
Finance leases right of use	$ 3,806	$ 6,414
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	56,095,918	56,056,450
Common stock, shares outstanding (in shares)	56,095,918	56,056,450
Treasury stock, shares (in shares)	258,667	0
Senior Secured Notes [Member]
Deferred financing costs	$ 10,272	$ 11,304
Senior Unsecured Bonds [Member]
Deferred financing costs	2,995	3,659
Convertible Senior Notes [Member]
Deferred financing costs	10,445	0
Variable Interest Entity, Primary Beneficiary [Member]
Property, plant and equipment, net	2,326,491	2,159,696
Construction-in-process	360,508	366,924
Operating leases right of use	9,662	7,825
Finance leases right of use	$ 75	$ 192

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Cost of revenues:
Cost of revenues		465,335	398,746	429,067
Gross profit		268,824	264,338	276,275
Operating expenses:
Research and development expenses		5,078	4,129	5,395
Selling and marketing expenses		16,193	15,199	17,384
General and administrative expenses		61,274	75,901	60,226
Impairment of long-lived assets		32,648	0	0
Write-off of unsuccessful exploration activities		828	0	0
Business interruption insurance income		0	(248)	(20,743)
Operating income		152,803	169,357	214,013
Other income (expense):
Interest income		3,417	2,124	1,717
Interest expense, net		(87,743)	(82,658)	(77,953)
Derivatives and foreign currency transaction gains (losses)		(6,044)	(14,720)	3,802
Income attributable to sale of tax benefits		33,885	29,582	25,720
Other non-operating income (expense), net		(709)	(134)	1,418
Income from operations before income tax and equity in earnings (losses) of investees		95,609	103,551	168,717
Income tax (provision) benefit		(14,742)	(24,850)	(67,003)
Equity in earnings (losses) of investees, net		(3,072)	(2,624)	92
Net income		77,795	76,077	101,806
Net income attributable to noncontrolling interest		(11,954)	(13,985)	(16,350)
Net income attributable to the Company's stockholders		65,841	62,092	85,456
Comprehensive income:
Net income		77,795	76,077	101,806
Other comprehensive income (loss), net of related taxes:
Change in foreign currency translation adjustments		(2,486)	(3,236)	3,813
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment that qualifies as a cash flow hedge		8,370	3,892	(3,975)
Change in unrealized gains or losses in respect of a cross currency swap derivative instrument that qualifies as a cash flow hedge (net of related tax of $464 and $817, respectively)		(1,825)	2,379	3,366
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax)		40	(40)	0
Other changes in comprehensive income		59	228	274
Comprehensive income		81,953	79,300	105,284
Comprehensive income attributable to noncontrolling interest		(11,421)	(12,779)	(17,794)
Comprehensive income attributable to the Company's stockholders		$ 70,532	$ 66,521	$ 87,490
Earnings per share attributable to the Company's stockholders:
Basic: (in dollars per share)		$ 1.17	$ 1.11	$ 1.66
Diluted: (in dollars per share)		$ 1.17	$ 1.10	$ 1.65
Weighted average number of shares used in computation of earnings per share attributable to the Company's stockholders:
Basic (in shares)		56,063	56,004	51,567
Diluted (in shares)		56,503	56,402	51,937
Electricity [Member]
Revenues:
Revenue		$ 631,727	$ 585,771	$ 541,393
Cost of revenues:
Cost of revenues		380,361	337,019	300,059
Product [Member]
Revenues:
Revenue		71,414	46,920	148,125
Cost of revenues:
Cost of revenues		60,479	41,374	114,948
Energy Storage and Management Services [Member]
Revenues:
Revenue		31,018	30,393	15,824
Cost of revenues:
Cost of revenues		$ 24,495	$ 20,353	$ 14,060
[1]Revenues as reported in the geographic area in which they originate.

Consolidated Statements of Op_2

Consolidated Statements of Operations and Comprehensive Income (Loss) (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge, tax	$ 464	$ 817
Change in unrealized gains or losses on marketable securities available-for-sale, tax	$ 0	$ 0

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands		Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock Outstanding [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Cross Currency Interest Rate Contract [Member] Common Stock [Member]	Cross Currency Interest Rate Contract [Member] Additional Paid-in Capital [Member]	Cross Currency Interest Rate Contract [Member] Treasury Stock [Member]	Cross Currency Interest Rate Contract [Member] Retained Earnings [Member]	Cross Currency Interest Rate Contract [Member] AOCI Attributable to Parent [Member]	Cross Currency Interest Rate Contract [Member] Parent [Member]	Cross Currency Interest Rate Contract [Member] Noncontrolling Interest [Member]	Cross Currency Interest Rate Contract [Member]	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2019										51,032																	51,032
Balance in Other comprehensive income (loss) beginning of period at Dec. 31, 2019		$ 0	$ 0	$ 0	$ (755)	$ 0	$ (755)	$ 0	$ (755)		$ 51	$ 913,150	$ 0	$ 487,118	$ (8,654)	$ 1,391,665	$ 122,990	$ 1,514,655										$ 51	$ 913,150	$ 0	$ 487,873	$ (8,654)	$ 1,392,420	$ 122,990	$ 1,515,410
Stock-based compensation																												0	9,830	0	0	0	9,830	0	9,830
Exercise of options by employees and directors (*) (in shares)	[1]																										178
Exercise of options by employees and directors (*)	[1]																											0	0	0	0	0	0	0	0
Cash paid to noncontrolling interest																												0	0	0	0	0	0	(6,756)	(6,756)
Cash dividend declared																												0	0	0	(22,471)	0	(22,471)	0	(22,471)
Common stock issuance (in shares)																											4,773
Common stock issuance																												5	339,466	0	0	0	339,471	0	339,471
Increase in noncontrolling interest																												0	0	0	0	0	0	2,754	2,754
Net income																												0	0	0	85,456	0	85,456	15,020	100,476
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total																												0	0	0	0	2,369	2,369	1,444	3,813
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment that qualifies as a cash flow hedge																												0	0	0	0	(3,975)	(3,975)	0	(3,975)
Change in respect of derivative instruments designated for cash flow hedge																			$ 0	$ 0	$ 0	$ 0	$ 3,366	$ 3,366	$ 0	$ 3,366									3,366
Other																												0	0	0	0	274	274	0	274
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax)																																			0
Balance (in shares) at Dec. 31, 2020																											55,983
Balance in Other comprehensive income (loss) end of period at Dec. 31, 2020																												56	1,262,446	0	550,103	(6,620)	1,805,985	135,452	1,941,437
Stock-based compensation																												0	9,168	0	0	0	9,168	0	9,168
Exercise of options by employees and directors (*) (in shares)	[1]																										73
Exercise of options by employees and directors (*)	[1]																											0	0	0	0	0	0	0	0
Cash paid to noncontrolling interest																												0	0	0	0	0	0	(5,507)	(5,507)
Cash dividend declared																												0	0	0	(26,986)	0	(26,986)	0	(26,986)
Increase in noncontrolling interest																												0	0			0	0	1,357	1,357
Net income																												0	0	0	62,092	0	62,092	13,366	75,458
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total																												0	0	0	0	(2,030)	(2,030)	(1,206)	(3,236)
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment that qualifies as a cash flow hedge																												0	0	0	0	3,892	3,892	0	3,892
Change in respect of derivative instruments designated for cash flow hedge																			0	0	0	0	2,379	2,379	0	2,379									2,379
Other																												0	0	0	0	228	228	0	228
Stock issuance costs reimbursement																												0	311	0	0	0	311	0	311
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax)																												0	0	0	0	(40)	(40)	0	(40)
Balance (in shares) at Dec. 31, 2021																											56,056
Balance in Other comprehensive income (loss) end of period at Dec. 31, 2021																												56	1,271,925	0	585,209	(2,191)	1,854,999	143,462	1,998,461
Stock-based compensation																												0	11,646	0	0	0	11,646	0	11,646
Exercise of options by employees and directors (*) (in shares)	[1]																										299
Exercise of options by employees and directors (*)	[1]																											0	39	0	0	0	39	0	39
Cash paid to noncontrolling interest																												0	0	0	0	0	0	(4,811)	(4,811)
Cash dividend declared																												0	0	0	(27,143)	0	(27,143)	0	(27,143)
Increase in noncontrolling interest																												0	0	0	0	0	0	3,970	3,970
Net income																												0	0	0	65,841	0	65,841	11,316	77,157
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total																												0	0	0	0	(1,953)	(1,953)	(533)	(2,486)
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment that qualifies as a cash flow hedge																												0	0	0	0	8,370	8,370	0	8,370
Change in respect of derivative instruments designated for cash flow hedge																			$ 0	$ 0	$ 0	$ 0	$ (1,825)	$ (1,825)	$ 0	$ (1,825)									(1,825)
Other																												0	0	0	0	59	59	0	59
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax)																												0	0	0	0	40	40	0	40
Purchase of treasury stock (in shares)																											(259)
Purchase of treasury stock																												0	0	(17,964)	0	0	(17,964)	0	(17,964)
Purchase of capped call instruments																												0	(24,538)	0	0	0	(24,538)	0	(24,538)
Balance (in shares) at Dec. 31, 2022																											56,096
Balance in Other comprehensive income (loss) end of period at Dec. 31, 2022																												$ 56	$ 1,259,072	$ (17,964)	$ 623,907	$ 2,500	$ 1,867,571	$ 153,404	$ 2,020,975
[1]Resulted in an amount lower than $1 thousand.

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Retained Earnings [Member]
Cash dividend declared, per share (in dollars per share)	$ 0.48	$ 0.48	$ 0.44
Cross Currency Interest Rate Contract [Member]
Change in respect of derivative instruments designated for cash flow hedge, tax	$ 464	$ 817	$ 1,095
Change in respect of derivative instruments designated for cash flow hedge, tax	0
Change in unrealized gains or losses on marketable securities available-for-sale, tax	$ 0	$ 0	$ 0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 77,795	$ 76,077	$ 101,806
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	198,792	182,972	156,612
Accretion of asset retirement obligation	5,257	3,977	3,232
Stock-based compensation	11,646	9,168	9,830
Income attributable to sale of tax benefits, net of interest expense	(13,153)	(12,201)	(12,090)
Equity in losses (earnings) of investees, net	3,072	2,624	(92)
Mark-to-market of derivative instruments	1,613	741	(1,192)
Loss on disposal of property, plant and equipment	(89)	0	0
Exploration Abandonment and Impairment Expense	828	0	0
Impairment of long-lived assets	32,648	0	0
Loss from prepayment of a long-term loan	1,102	0	0
Loss (gain) on severance pay fund asset	1,019	(1,335)	(893)
Deferred income tax provision	(18,979)	(3,115)	5,102
Liability for unrecognized tax benefits	829	3,760	(12,673)
Other	575	526	338
Changes in operating assets and liabilities, net of businesses acquired:
Receivables	(19,929)	26,738	3,520
Costs and estimated earnings in excess of billings on uncompleted contracts	(6,713)	14,852	13,821
Inventories	5,613	4,127	178
Prepaid expenses and other	4,888	(19,105)	(2,687)
Change in operating lease right of use asset	2,717	3,010	3,825
Deposits and other	2,571	(4,154)	(893)
Accounts payable and accrued expenses	(2,045)	(21,936)	(5,373)
Billings in excess of costs and estimated earnings on uncompleted contracts	(463)	(1,931)	8,424
Liabilities for severance pay	(2,861)	(3,055)	(2)
Change in operating lease liabilities	(3,581)	(2,816)	(3,765)
Other liabilities, net	(2,178)	(102)	(2,023)
Net cash provided by operating activities	280,974	258,822	265,005
Cash flows from investing activities:
Purchase of marketable securities	(19,192)	(60,070)	0
Maturities of marketable securities	32,645	16,272	0
Sale of marketable securities	29,355	0	0
Capital expenditures	(563,476)	(419,272)	(320,738)
Cash received from insurance recoveries	600	0	4,700
Investment in unconsolidated companies	(4,509)	(6,401)	(20,960)
Cash paid for acquisition of a business, net of cash acquired	0	(171,000)	(43,397)
Decrease (increase) in severance pay fund asset, net of payments made to retired employees	1,171	3,189	845
Other investing activities	0	(911)	(6,419)
Net cash used in investing activities	(523,406)	(638,193)	(385,969)
Cash flows from financing activities:
Proceeds from long-term loans, net of transaction costs	135,259	275,000	419,262
Proceeds from exercise of options by employees	39	0	0
Proceeds from issuance of common stock, net of stock issuance costs	0	311	339,471
Proceeds from issuance of convertible notes, net of transaction costs	419,698	0	0
Purchase of capped call instruments	(24,538)	0	0
Purchase of treasury stock	(17,964)	0	0
Proceeds from the sale of limited liability company interest, net of transaction costs	50,330	37,141	0
Repayments of commercial paper and prepayments of long-term debt	(219,126)	0	(50,000)
Proceeds from revolving credit lines with banks	0	0	1,249,400
Repayment of revolving credit lines with banks	0	0	(1,289,950)
Cash received from noncontrolling interest	5,443	5,390	7,577
Repayments of long-term debt and financing liability	(185,163)	(93,046)	(135,384)
Cash paid to noncontrolling interest	(5,880)	(6,903)	(9,739)
Payments under finance lease obligations	(2,983)	(3,181)	(2,890)
Deferred debt issuance costs	(1,699)	(1,341)	(1,798)
Cash dividends paid	(27,143)	(26,986)	(22,471)
Net cash provided by (used in) financing activities	126,273	186,385	503,478
Effect of exchange rate changes on cash and cash equivalents and restricted cash and cash equivalents	(609)	(348)	1,154
Net change in cash and cash equivalents and restricted cash and cash equivalents	(116,768)	(193,334)	383,668
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	343,444	536,778	153,110
Cash and cash equivalents and restricted cash and cash equivalents at end of period	226,676	343,444	536,778
Supplemental disclosure of cash flow information:
Interest, net of interest capitalized	69,132	66,627	60,830
Income taxes, net	29,004	34,357	64,795
Supplemental non-cash investing and financing activities:
Increase (decrease) in accounts payable related to purchases of property, plant and equipment	4,764	7,976	3,148
Right of use assets obtained in exchange for new lease liabilities	8,759	6,175	3,642
Increase in asset retirement cost and asset retirement obligation	$ 7,512	$ 12,153	$ 8,963

Note 1 - Business and Significa

Note 1 - Business and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1 BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES Business The Company is primarily engaged in the geothermal and recovered energy business and primarily designs, develops, builds, sells, owns and operates clean, environmentally friendly geothermal and recovered energy-based power plants, usually using equipment that it designs and manufactures. The Company owns and operates geothermal and recovered energy-based power plants in various countries, including the United States, Kenya, Guatemala, Guadeloupe and Honduras. The Company’s equipment manufacturing operations are primarily located in Israel. Additionally, the Company owns and operates independent storage facilities in the United States providing energy storage and related services. Most of the Company’s domestic power plant facilities are Qualifying Facilities under the PURPA. The Power Purchase Agreements for certain of such facilities are dependent upon their maintaining Qualifying Facility status. Rounding Dollar amounts, except per share data, in the notes to these financial statements are rounded to the closest $1,000, Basis of presentation The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of the Company and of all majority-owned subsidiaries in which the Company exercises control over operating and financial policies, and variable interest entities in which the Company has an interest and is the primary beneficiary. Intercompany accounts and transactions have been eliminated in consolidation. Investments in less-than-majority-owned entities or other entities in which the Company exercises significant influence over operating and financial policies are accounted for using the equity method of accounting or consolidated if they are a variable interest entity in which the Company has an interest and is the primary beneficiary. Under the equity method, original investments are recorded at cost and adjusted by the Company’s share of undistributed earnings or losses of such companies. The Company’s earnings or losses in investments accounted for under the equity method have been reflected as “equity in earnings (losses) of investees, net” on the Company’s consolidated statements of operations and comprehensive income (loss). Use of estimates in preparation of financial statements The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of such financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. The most significant estimates with regard to the Company’s consolidated financial statements relate to the useful lives of property, plant and equipment, impairment of goodwill and long-lived assets, including intangible assets, revenue recognition of product sales using the percentage of completion method, asset retirement obligations, and the provision for income taxes. Cash and cash equivalents The Company considers all highly liquid instruments, with an original maturity of three Restricted cash, cash equivalents, and marketable securities Under the terms of certain long-term debt agreements, the Company is required to maintain certain debt service reserves, including principal and interest, cash collateral and operating fund accounts, including for future wells drilling, that have been classified as restricted cash and cash equivalents. Funds that will be used to satisfy obligations due during the next 12 Reconciliation of cash and cash equivalents and restricted cash and cash equivalents The following table provides a reconciliation of cash and cash equivalents and restricted cash and cash equivalents reported on the balance sheets that sum to the total of the same amounts shown on the statement of cash flows: December 31, 2022 2021 2020 (Dollars in thousands) Cash and cash equivalents $ 95,872 $ 239,278 $ 448,252 Restricted cash and cash equivalents 130,804 104,166 88,526 Total cash and cash equivalents and restricted cash and cash equivalents $ 226,676 $ 343,444 $ 536,778 Marketable securities The Company’s investments in marketable securities consist of debt securities with maturity of up to one three $0.1 Concentration of credit risk Financial instruments which potentially subject the Company to concentration of credit risk consist principally of temporary cash investments, marketable securities, accounts receivable and the cross-currency swap transaction. The Company places its temporary cash investments with high credit quality financial institutions located in the U.S. and in foreign countries. At December 31, 2022 2021, ten $250,000 December 31, 2022 2021, not At December 31, 2022 2021, December 31, 2022 2021, 18 10% December 31, 2022 2021 The Company has historically been able to collect substantially all of its receivable balances. As of December 31, 2022, January February 2023. In Honduras, as of December 31, 2022, February 2023. 19 may The Company may 19 Additionally, the Company considers the counterparty credit risk related to the cross-currency swap, as further described in note 12 December 31, 2022. Inventories Inventories consist primarily of raw material parts and sub-assemblies for power units and are stated at the lower of cost or net realizable value, using the weighted-average cost method. Inventories are reduced by a provision for slow-moving and obsolete inventories. This provision was not December 31, 2022 2021. Deposits and other Deposits and other consist primarily of performance bonds for construction and storage projects, long-term insurance contract funds and receivables, certain deferred costs and derivative instrument receivables. Property, plant and equipment, net Property, plant and equipment are stated at cost. All costs associated with the acquisition, development and construction of power plants operated by the Company are capitalized. Major improvements are capitalized and repairs and maintenance (including major maintenance) costs are expensed. Power plants operated by the Company, which include geothermal wells and exploration and resource development costs, are depreciated using the straight-line method over their estimated useful lives, which range from 15 to 30 years. The other assets are depreciated using the straight-line method over the following estimated useful lives of the assets: Years Buildings 25 Leasehold improvements 15 - 30 Machinery and equipment — manufacturing and drilling 10 Machinery and equipment — computers 3 - 5 Energy storage equipment 15 Solar facility equipment 30 Office equipment — furniture and fixtures 5 - 15 Office equipment — other 5 - 10 Vehicles 5 - 7 The cost and accumulated depreciation of items sold or retired are removed from the accounts. Any resulting gain or loss is recognized currently and recorded in the accompanying statements of operations. The Company capitalizes interest costs as part of constructing power plant facilities. Such capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life. Capitalized interest costs amounted to $18.7 million, $14.6 million, and $10.4 million for the years ended December 31, 2022, 2021 2020, During the fourth 2022, Exploration and development costs The Company capitalizes costs incurred in connection with the exploration and development of geothermal resources once it acquires land rights to the potential geothermal resource. Prior to acquiring land rights, the Company makes an initial assessment that an economically feasible geothermal reservoir is probable on that land. The Company determines the economic feasibility of potential geothermal resources internally, with all available data and external assessments vetted through the exploration department and occasionally using outside service providers. Costs associated with the initial assessment are expensed and included in cost of electricity revenues in the consolidated statements of operations and comprehensive income (loss). Such costs were immaterial during the years ended December 31, 2022, 2021 2020. two three may In most cases, the Company obtains the right to conduct the geothermal development and operations on land owned by the Bureau of Land Management ("BLM"), various states or with private parties. The land lease payments made during the exploration, development and construction phase are accounted under lease accounting as further described under the caption Leases below and reflected as expenses under “Electricity cost of revenues” in the consolidated statements of operations and comprehensive income (loss). Upon commencement of power generation on the leased land, the Company begins to pay the lessor’s long-term royalty payments based on the utilization of the geothermal resources as defined in the respective agreements. Such payments are expensed when the related revenues are earned and included in “Electricity cost of revenues” in the consolidated statements of operations and comprehensive income (loss). Following the acquisition of land rights to the potential geothermal resource, the Company conducts further studies and surveys, including water and soil analyses, among others, and augments its database with the results of these studies. The Company then initiates a suite of geophysical surveys to assess the resource and determine drilling locations. If the results of these activities support the initial assessment of the feasibility of the geothermal resource, the Company then proceeds to exploratory drilling and other related activities which may may not When deciding whether to continue holding lease rights and/or to pursue exploration activity, the Company diligently prioritizes prospective investments, taking into account resource and probability assessments in order to make informed decisions about whether a particular project will support commercial operation. There was no December 31, 2022, 2021 2020. 2022 All exploration and development costs that are being capitalized will be depreciated over their estimated useful lives when the related geothermal power plant is substantially complete and ready for use. A geothermal power plant is substantially complete and ready for use when electricity generation commences. Asset retirement obligation The Company records the fair value of a legal liability for an asset retirement obligation in the period in which it is incurred. The Company’s legal liabilities include plugging wells and post-closure costs of power producing and storage sites. When a new liability for asset retirement obligations is recorded, the Company capitalizes the costs of the liability by increasing the carrying amount of the related long-lived asset. The liability is accreted to its present value each period, and the capitalized cost is depreciated over the useful life of the related asset. The Company periodically reassesses the assumptions used to estimate the expected cash flows required to settle the asset retirement obligation, including changes in estimated probabilities, amounts, and timing of the settlement of the asset retirement obligation, as well as changes in the legal requirements of an obligation and revises the previously recorded asset retirement obligation accordingly. At retirement, the obligation is settled for its recorded amount at a gain or loss. Deferred financing costs Deferred financing costs are presented as a direct deduction from the carrying value of the associated debt liability or under "Deposits and other" if associated with lines of credit. Such deferred costs are amortized over the term of the related obligation using the effective interest method or ratably, as applicable. Amortization of deferred financing costs is presented as interest expense in the consolidated statements of operations and comprehensive income (loss). Amortization expense for the years ended December 31, 2022, 2021 2020 December 31, 2022, 2021 2020, Goodwill Goodwill represents the excess of the fair value of consideration transferred in the business combination transactions over the fair value of tangible and intangible assets acquired, net of the fair value of liabilities assumed and the fair value of any noncontrolling interest in the acquisitions. Goodwill is not December 31 not first not no not 2017 04, 350 not 10 Intangible assets Intangible assets consist of allocated acquisition costs of PPAs, which are amortized using the straight-line method over the 6 to 19-year terms of the agreements (see Note 10 may not no no not Impairment of long-lived assets and long-lived assets to be disposed of The Company evaluates long-lived assets, such as property, plant and equipment and construction-in-process for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not not not not The Company tests its operating plants that are operated together as a complex for impairment at the complex level because the cash flows of such plants result from significant shared operating activities. For example, the operating power plants in a complex are managed under a combined operation management generally with one one not not not Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated future net undiscounted cash flows expected to be generated by the asset. The significant assumptions that the Company uses in estimating its undiscounted future cash flows include: (i) projected generating capacity of the complex or power plant and rates to be received under the respective PPAs and expected market rates thereafter and (ii) projected operating expenses of the relevant complex or power plant. Estimates of future cash flows used to test recoverability of a long-lived asset under development also include cash flows associated with all future expenditures necessary to develop the asset. If the assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds their fair value. Management believes that no impairment exists for long-lived assets, except as detailed below in respect of the Brawley power plant; however, estimates as to the recoverability of such assets may may During the fourth 2022, 9 December 31, 2022, no Derivative instruments Derivative instruments (including certain derivative instruments embedded in other contracts) are measured at their fair value and recorded as either assets or liabilities unless exempted from derivative treatment as a normal purchase and sale. Changes in the fair value of derivatives not The Company maintains a risk management strategy that may Foreign currency translation The U.S. dollar is the functional currency for all of the Company’s consolidated operations and those of its equity affiliates except the Guadeloupe power plant and operations in New Zealand. For those entities, all gains and losses from currency translations are included under “Derivatives and foreign currency transaction gains (losses)” in the consolidated statements of operations and comprehensive income (loss). The Euro and New Zealand Dollar are the functional currencies of the Company's operations in Guadeloupe and New Zealand, respectively, and thus the impact from currency translation adjustments in those locations is included as currency translation adjustments in "Accumulated other comprehensive income" in the consolidated statements of equity and in comprehensive income. The accumulated currency translation adjustments amounted to a debit of $3.1 million and a debit of $1.2 million as of December 31, 2022 2021, Comprehensive income Comprehensive income includes net income plus other comprehensive income (loss), which for the Company consists primarily of changes in foreign currency translation adjustments, changes in unrealized gains or losses in respect of the Company’s share in derivatives instruments of an unconsolidated investment that qualifies as a cash flow hedge, changes in respect of derivative instruments designated as a cash flow hedge and changes in unrealized gains or losses on marketable securities available-for-sale. The changes in foreign currency translation adjustments during the years ended December 31, 2022, 2021 2020 6 8 3 Power purchase agreements Substantially all of the Company’s Electricity revenues are recognized pursuant to PPAs in the United States and in various foreign countries, including Kenya, Guatemala, Guadeloupe and Honduras. These PPAs generally provide for the payment of energy payments or both energy and capacity payments through their respective terms which expire in varying periods from 2022 2047. not first first Pursuant to the terms of certain of the PPAs, the Company may not not may Revenues and cost of revenues Revenues from contracts with customers are recognized in connection with the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Specifically, the Company is required to apply each of the following steps: ( 1 2 3 4 5 Revenues are primarily related to: (i) sale of electricity from geothermal and recovered energy-based power plants owned and operated by the Company; (ii) geothermal and recovered energy-based power plant equipment engineering, sale, construction and installation, and operating services and (iii) Energy storage services as well as services relating to the engineering, procurement, construction, operation and maintenance of energy storage units. Electricity segment revenues five 9 606, 30 60 Product segment revenues third not not no one two In contracts for which the Company determines that control is not Accounting for product contracts that are satisfied over time includes use of several estimates such as variable consideration related to bonuses and penalties and total estimated cost for completing the contract. The estimated amount of variable consideration will be included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not The nature of the Company's product contracts give rise to several modifications or change requests by its customers. Substantially all of the modifications are treated as cumulative catch-ups to revenues since the additional goods are not one Energy Storage segment revenues 606 may Contract assets related to the Company's Product segment reflect revenues recognized and performance obligations satisfied in advance of customer billing. Contract liabilities related to the Company's Product segment reflect customer billing in advance of the satisfaction of performance under the contract. The Company receives payments from customers based on the terms established in the contracts. Total contract assets and contract liabilities as of December 31, 2022 2021 December 31, December 31, 2022 2021 (Dollars in thousands) Contract assets (*) $ 16,405 $ 9,692 Contract liabilities (*) $ (8,785 ) $ (9,248 ) (*) Contract assets and contract liabilities are presented as "Costs and estimated earnings in excess of billings on uncompleted contracts" and "Billings in excess of costs and estimated earnings on uncompleted contracts", respectively, on the consolidated balance sheets. The contract liabilities balance at the beginning of the year was partially recognized as product revenues during the year ended December 31, 2022 The following table presents the significant changes in the contract assets and contract liabilities for the years ended December 31, 2022 2021: Years Ended December 31, 2022 2021 Contract assets Contract liabilities Contract assets Contract liabilities (Dollars in thousands) Recognition of contract liabilities as revenue as a result of performance obligations satisfied $ — $ — $ — $ 3,566 Cash received in advance for which revenues have not yet recognized, net of expenditures made — (2,604 ) — (2,146 ) Reduction of contract assets as a result of rights to consideration becoming unconditional (23,000 ) — (43,518 ) — Contract assets recognized, net of recognized receivables 32,780 — 29,177 — Net change in contract assets and contract liabilities $ 9,780 $ (2,604 ) $ (14,341 ) $ 1,420 The timing of revenue recognition, billings and cash collections results in accounts receivable, contract assets and contract liabilities on the consolidated balance sheet. In the Company's Products segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms, or upon achievement of contractual milestones. Generally, billing occurs subsequent to the recognition of revenue, resulting in contract assets. However, the Company sometimes receives advances or deposits from its customers before revenue can be recognized, resulting in contract liabilities. These assets and liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. The timing of billing its customers and receiving advance payments vary from contract to contract. The majority of payments are received no On December 31, 2022, not The following schedule reconciles revenues accounted under lease accounting and under ASC 606, three December 31, 2022, 2021 2020: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Electricity revenues accounted under lease accounting $ 529,264 $ 502,355 $ 473,260 Electricity, Product and Energy Storage revenues accounted under ASC 606 204,895 160,729 232,082 Total consolidated revenues $ 734,159 $ 663,084 $ 705,342 Disaggregated revenues from contracts with customers for the years ended December 31, 2022, 2021 2020 18 Allowance for credit losses The Company performs an analysis of potential credit losses related to its financial instruments that are within the scope of ASU 2018 19, 325, may 19 not The following table describes the changes in the allowance for expected credit losses for the years ended December 31, 2022 2021 Years Ended December 31, 2022 2021 (Dollars in thousands) Beginning balance of the allowance for expected credit losses $ 90 $ 597 Change in the provision for expected credit losses for the period — (507 ) Ending balance of the allowance for expected credit losses $ 90 $ 90 Leases In February 2016, 2016 02, 842 two January 1, 2019 no The Company is a lessee in operating lease transactions primarily consisting of land leases for its exploration and development activities. Additionally, the Company is a lessee in finance lease transactions related to fleet vehicles. As further described under Note 2 one 842, In accordance with the lease standard, for agreements in which the Company is the lessee, the Company applies a unified accounting model by which it recognizes a right-of-use asset ("ROU") and a lease liability at the commencement date of the lease contract for all the leases in which the Company has a right to control identified assets for a specified period of time. The classification of the lease as a finance lease or an operating lease determines the subsequent accounting for the lease arrangement. Upon the adoption of the new standard the Company, both as a lessee and as a lessor, chose to apply the following permitted practical expedients: 1. Not 2. Not 840 840 3. Exclude initial direct costs from measurement of the ROU asset at the date of initial application; 4. Applying the practical expedient (for a lessor) to not 606 606. 5. Applying the practical expedient (for a lessee) regarding the recognition and measurement of short-term leases, for leases for a period of up to 12 6. Applying the practical expedient (for a lessee) to not not 840 842. Since the Company elected to apply the practical expedients above, it applied the lease standard to all contracts entered into before January 1, 2019 840. The significant accounting policies regarding leases that were applied as from January 1, 2019 1. Determining whether an arrangement contains a lease On the inception date of the lease, the Company determines whether the arrangement is a lease or contains a lease, while examining if it conveys the right to control the use of an identified asset for a period of time in exchange for consideration. 2. The Company as a lessee a. Lease classification: At the commencement date, a lease is a finance lease if it meets any one • The lease transfers ownership of the underlying asset to the lessee by the end of the lease term. • The lease grants the lessee an option to purchase the underlying asset that the lessee is reasonably certain to exercise. • The lease term is for the major part of the remaining economic life of the underlying asset. • The present value of the sum of the lease payments and any residual value guaranteed by the lessee that is not • The underlying asset is of such a specialized nature that it is expected to have no b. Leased assets and lease liabilities - initial recognition Upon initial recognition, the Company recognizes a liability at the present value of the lease payments to be made over the lease term, and concurrently recognizes a ROU asset at the same amount of the liability, adjusted for any prepaid or accrued lease payments, plus initial direct costs incurred in respect of the lease. Since the interest rate implicit in the lease is not c. The lease term The lease term is the non-cancellable period of the lease plus periods covered by an extension or termination option if it is reasonably certain that the Company will exercise the option. d. Subsequent measurement of operating leases After lease commencement, the Company measures the lease liability at the present value of the remaining lease payments using the discount rate determined at lease commencement (as long as the discount rate has not e. Subsequent measurement of finance leases After lease commencement, the Company measures the lease liability by increasing the carrying amount to reflect interest on the lease liability and reducing the carrying amount to reflect lease payments made during the period. The Company determines the interest on the lease liability in each period during the lease term as the amount that produces a constant periodic discount rate on the remaining balance of the liability, taking into consideration the reassessment requirements. After lease commencement, the Company measures the ROU assets at cost less any accumulated amortization and any accumulated impairment losses, taking into consideration the reassessment requirements. The Company amortizes the ROU asset on a straight-line basis, unless another systematic basis better represents the pattern in which the Company expects to consume the ROU asset’s future economic benefits. The ROU asset is amortized over the shorter of the lease term or the useful life of the ROU asset. The amortization period related to the finance lease transactions on fleet vehicles is 4-5 years. The total periodic expense (the sum of interest and amortization expense) of a finance lease is typically higher in the early periods and lower in the later periods. f. Variable lease payments: Variable lease payments that depend on an index or a rate On the commencement date, the lease payments may not Other variable lease payments: Variable payments that depend on performance or use of the underlying asset are not 3. The Company as a lessor At lease commencement, the Company as a lessor classifies leases as either finance or operating leases. Finance leases are further classified as a sales-type lease or as a direct financing lease, however, the Company has no Under an operating lease, the Company recognizes the lease payment as income over the lease term, generally as earned or on a straight-line basis. Termination fee Fees to terminate PPAs are recognized in the period incurred as selling and marketing expenses. No termination fees were incurred during 2022, 2021 2020. Warranty on products sold The Company generally provides a one two December 31, 2022, 2021 2020. Research and development Research and development costs incurred by the Company for the development of technologies related to its existing and new geothermal and recovered energy power plants as well as storage facilities are expensed as incurred. Stock-based compensation The Company accounts for stock-based compensation using the fair value method whereby compensation cost is measured at the grant date, based on the calculated fair value of the award, and is recognized as an expense over the requisite employee service period (generally the vesting period of the grant). The Company uses the Complex Lattice, Three-based Option Pricing model to calculate the fair value of the stock-based compensation awards. Tax monetization Transactions The Company has five 3, CD4 13 470. 810. 835 7. Income taxes Income taxes are accounted for using the asset and liability approach, which requires the recognition of taxes payable or refundable for the current year and deferred tax assets and liabilities for the future tax consequences of events that have been recognized in the Company’s financial statements or tax returns. The measurement of current and deferred tax assets and liabilities are based on provisions of the enacted tax law. The Company accounts for investment tax credits and production tax credits as a reduction to income taxes in the year in which the credit arises. The measurement of deferred tax assets is reduced, if necessary, by the amount of any tax benefits that, based on available evidence, are more likely than not not Earnings per share Basic earnings per share attributable to the Company’s stockholders (“earnings per share”) is computed by dividing net income attributable to the Company’s stockholders by the weighted average number of shares of common stock outstanding for the period. The Company does not The table below shows the reconciliation of the number of shares used in the computation of basic and diluted earnings per share: Year Ended December 31, 2022 2021 2020 (In thousands) Weighted average number of shares used in computation of basic earnings per share 56,063 56,004 51,567 Add: Additional shares from the assumed exercise of employee stock-based awards 440 398 370 Weighted average number of shares used in computation of diluted earnings per share 56,503 56,402 51,937 The number of stock-based awards that could potentially dilute future earnings per share which were not December 31, 2022, 2021 2020. As per ASU 2020 06, December 31, 2022, not not no 1 Redeemable noncontrolling interest Redeemable noncontrolling interest is currently redeemable and relates to a certain noncontrolling shareholder in a subsidiary having an option to sell its equity interest to the Company. The carrying value of the redeemable noncontrolling interest balance as of December 31, 2022 2021 2022 2021 (Dollars in thousands) Redeemable noncontrolling interest as of January 1, $ 9,329 $ 9,830 Redeemable noncontrolling interest in results of operation of a consolidated subsidiary 638 619 Cash paid to noncontrolling interest — (268 ) Currency translation adjustments (377 ) (852 ) Redeemable noncontrolling interest as of December 31, $ 9,590 $ 9,329 Cash dividends During the years ended December 31, 2022, 2021 2020, Convertible Senior Notes On June 22, 2022, 2027. 144A 1933, June 27, 2022, January 15 July 15 January 15, 2023. July 15, 2027, Holders of the Notes may January 15, 2027 1 September 30, 2022 ( not 2 five five $1,000 3 may not July 21, 2025), second 4 January 15, 2027 second may may The initial conversion rate was 11.0776 shares of common stock per $1,000 may may not July 21, 2025. may July 21, 2025 41st not may The Company incurred approximately $11.6 million of issuance costs in respect of the issuance of the Notes, which were deferred and are presented as a reduction to the Notes principal amounts on the consolidated balance sheets. The deferred issuance costs are amortized over the term of the Notes into interest expenses, net in the consolidated statements of operations and comprehensive income. During the year ended December 31, 2022, Based on the closing market price of the Company's common stock on December 31, 2022, Capped Call Transactions In connection with the issuance of the convertible notes described above, the Company entered into capped call transactions (the "Capped Calls") with certain counterparties. Th

Note 2 - Business Acquisitions

Note 2 - Business Acquisitions	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Business Combination Disclosure [Text Block]	NOTE 2 BUSINESS ACQUISITIONS Business combination - geothermal assets purchase transaction On July 13, 2021, two 67.5 one two 2038 December 2025, As a result of the acquisition, the Company expanded its overall generation capacity and expects to improve the profitability of the purchased assets through cost reduction and synergies. The Company accounted for the transaction in accordance with Accounting Standard Codification ("ASC") 805, 810, 2021, December 30, 2021. The following table summarizes the purchase price allocation to the fair value of the assets acquired and liabilities assumed (in millions): Cash and cash equivalents and restricted cash $ 10.9 Trade receivables and others (1) 8.6 Deferred income taxes 22.8 Property, plant and equipment and construction-in-process 152.0 Intangible assets (2) 191.6 Goodwill (3) 66.2 Total assets acquired $ 452.1 Accounts payable, accrued expenses and others $ 6.6 Financing liability (4) 258.4 Asset retirement obligation 5.3 Total liabilities assumed $ 270.3 Total assets acquired, and liabilities assumed, net $ 181.8 ( 1 third 2021. ( 2 ( 3 ( 4 September 2015 June 2038. September 2024. During the year ended December 31, 2022, 31, 2021, The following unaudited pro forma summary presents condensed consolidated information of the Company as if the business combination had occurred on January 1, 2020. not Pro forma for the Year Ended December 31, 2021 2020 (Dollars in millions) Electricity revenues $ 613.3 $ 596.6 Total revenues $ 690.6 $ 760.6 Net income attributable to the Company's stockholders $ 69.6 $ 84.3

Note 3 - Marketable Securities

Note 3 - Marketable Securities	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	NOTE 3 MARKETABLE SECURITIES Marketable securities are presented at fair value and include investments in debt securities classified as available for sale. All marketable securities have maturities of less than a year. Investment in marketable securities is comprised of the following: December 31, 2022 December 31, 2021 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized Cost Gross unrealized gains Gross unrealized losses Fair value (Dollars in thousands) (Dollars in thousands) Debt security type: Corporate bonds $ — $ — $ — $ — $ 32,302 $ — $ (36 ) $ 32,529 Commercial paper — — — — 8,891 — — 8,891 Money market funds 136 — — 136 3,686 — — 3,686 Foreign issuers — — — — 1,920 — (4 ) 1,923 Total debt securities available for sale $ 136 $ — $ — $ 136 $ 46,799 $ — $ (40 ) $ 47,029 As of December 31, 2022 December 31, 2021, The following table summarizes the fair value and gross unrealized losses of debt securities with unrealized losses aggregated by security type and length of time that the fair value had been below amortized cost, on an individual security basis: December 31, 2022 December 31, 2021 Less than 12 months Greater than 12 months Less than 12 months Greater than 12 months Fair value Gross unrealized loss Fair value Gross unrealized loss Fair value Gross unrealized loss Fair value Gross unrealized loss (Dollars in thousands) (Dollars in thousands) Debt security type: Corporate bonds $ — $ — $ — $ — $ 32,529 $ (36 ) $ — $ — Commercial paper — — — — 8,891 — — — Money market funds 136 — — — 3,686 — — — Foreign issuers — — — — 1,923 (4 ) — — Total debt securities available for sale $ 136 $ — $ — $ — $ 47,029 $ (40 ) $ — $ — The Company sold all of its investments in debt securities during the second 2022 no December 31, 2021 2022.

Note 4 - Inventories

Note 4 - Inventories	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Inventory Disclosure [Text Block]	NOTE 4 INVENTORIES Inventories consist of the following: December 31, 2022 2021 (Dollars in thousands) Raw materials and purchased parts for assembly $ 10,629 $ 11,539 Self-manufactured assembly parts and finished products 12,203 16,906 Total $ 22,832 $ 28,445

Note 5 - Cost and Estimated Ear

Note 5 - Cost and Estimated Earnings on Uncompleted Contracts	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Long-Term Contracts or Programs Disclosure [Text Block]	NOTE 5 COST AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS Cost and estimated earnings on uncompleted contracts consist of the following: December 31, 2022 2021 (Dollars in thousands) Costs and estimated earnings incurred on uncompleted contracts $ 155,407 $ 103,486 Less billings to date (147,787 ) (103,042 ) Total $ 7,620 $ 444 These amounts are included in the consolidated balance sheets under the following captions: December 31, 2022 2021 (Dollars in thousands) Costs and estimated earnings in excess of billings on uncompleted contracts $ 16,405 $ 9,692 Billings in excess of costs and estimated earnings on uncompleted contracts (8,785 ) (9,248 ) Total $ 7,620 $ 444 The completion costs of the Company’s construction contracts are subject to estimation. Due to uncertainties inherent in the estimation process, it is reasonably possible that estimated contract earnings will be further revised in the near term.

Note 6 - Investment in Unconsol

Note 6 - Investment in Unconsolidated Companies	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	NOTE 6 INVESTMENT IN UNCONSOLIDATED COMPANIES Investment in unconsolidated companies consists of the following: December 31, 2022 2021 (Dollars in thousands) Investment in Sarulla $ 74,881 $ 68,968 Investment in Ijen 40,812 36,918 Total investment in unconsolidated companies $ 115,693 $ 105,886 The Sarulla Complex The Company holds a 12.75% equity interest in a consortium that developed the 330 MW Sarulla geothermal power plant project in Tapanuli Utara, North Sumatra, Indonesia. The Sarulla project is comprised of three separately constructed 110 MW units, the most recent of which, NIL 2, April 2018. April 4, 2013. 323 During the years ended December 31, 2022, 2021 2020, December 31, 2022, The Sarulla consortium entered into interest rate swap agreements with various international banks, effective as of June 4, 2014, Year Ended December 31, 2022 2021 (Dollars in thousands) Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment that qualifies as a cash flow hedge $ 8,370 $ 3,892 The related accumulated loss (gain) recorded by the Company under accumulated other comprehensive income as of December 31, 2022 2021 The Sarulla power plant complex has been experiencing a reduction in generation primarily due to wellfield issues at one second 2022, no The Ijen Project On July 2, 2019, 2022, 2021 2020, 323

Note 7 - Variable Interest Enti

Note 7 - Variable Interest Entities	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Disclosure Of Variable Interest Entities [Text Block]	NOTE 7 VARIABLE INTEREST ENTITIES The Company’s overall methodology for evaluating transactions and relationships under the variable interest entity (“VIE”) accounting and disclosure requirements includes the following two In performing the first • The design of the entity, including the nature of its risks and the purpose for which the entity was created, to determine the variability that the entity was designed to create and distribute to its interest holders; • The nature of the Company’s involvement with the entity; • Whether control of the entity may not • Whether there is sufficient equity investment at risk to finance the activities of the entity; and • Whether parties other than the equity holders have the obligation to absorb expected losses or the right to receive residual returns. If the Company identifies a VIE based on the above considerations, it then performs the second • Whether the Company has the power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and • Whether the Company has the obligation to absorb losses of the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE. The Company’s VIEs include certain of its wholly owned subsidiaries that own one not The tables below detail the assets and liabilities (excluding intercompany balances which are eliminated in consolidation) for the Company’s VIEs, combined by VIE classifications, that were included in the consolidated balance sheets as of December 31, 2022 2021: December 31, 2022 Project Debt PPAs (Dollars in thousands) Assets: Restricted cash and cash equivalents $ 127,972 $ — Other current assets 128,414 29,377 Property, plant and equipment, net 1,516,107 810,384 Construction-in-process 104,956 255,552 Other long-term assets 304,766 51,037 Total assets $ 2,182,215 $ 1,146,350 Liabilities: Accounts payable and accrued expenses $ 42,577 $ 8,552 Long-term debt 637,080 — Other long-term liabilities 400,271 50,348 Total liabilities $ 1,079,928 $ 58,900 December 31, 2021 Project Debt PPAs (Dollars in thousands) Assets: Restricted cash and cash equivalents $ 101,364 $ — Other current assets 122,944 31,781 Property, plant and equipment, net 1,300,941 858,755 Construction-in-process 96,764 270,160 Other long-term assets 326,686 55,441 Total assets $ 1,948,699 $ 1,216,137 Liabilities: Accounts payable and accrued expenses $ 34,155 $ 10,004 Long-term debt 672,804 2,444 Other long-term liabilities 419,085 49,919 Total liabilities $ 1,126,044 $ 62,367

Note 8 - Fair Value of Financia

Note 8 - Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 8 FAIR VALUE OF FINANCIAL INSTRUMENTS The fair value measurement guidance clarifies that fair value represents the amount that would be received upon selling an asset or paid upon transferring a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. The guidance establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 3 three Level 1 Level 2 1 Level 3 The following table sets forth certain fair value information at December 31, 2022 2021 December 31, 2022 Fair Value Carrying Value at December 31, 2022 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Current assets: Cash equivalents (including restricted cash accounts) $ 34,832 $ 34,832 $ 34,832 $ — $ — Marketable securities (including cash equivalents) 136 136 136 — — Derivatives: Long-term assets: Cross currency swap (3) 3,029 3,029 — 3,029 — Liabilities: Current liabilities: Derivatives: Currency forward contracts (2) (800 ) (800 ) — (800 ) — Cross currency swap (3) (2,777 ) (2,777 ) — (2,777 ) — $ 34,420 $ 34,420 $ 34,968 $ (548 ) $ — December 31, 2021 Fair Value Carrying Value at December 31, 2021 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets Current assets: Cash equivalents (including restricted cash accounts) $ 31,675 $ 31,675 $ 31,675 $ — $ — Marketable securities 47,029 47,029 47,029 — — Derivatives: Cross currency swap (3) 1,461 1,461 — 1,461 — Currency forward contracts (2) 813 813 — 813 — Long-term assets: Cross currency swap (3) 37,883 37,883 — 37,883 — Liabilities: Long-term liabilities: Contingent payables (1) (2,425 ) (2,425 ) — — (2,425 ) $ 116,436 $ 116,436 $ 78,704 $ 40,157 $ (2,425 ) ( 1 December 31, 2022 2021 ( 2 December 31, 2022 December 31, 2021, ( 3 zero December 31, 2022. December 31, 2022 December 31, 2021 December 31, 2022. The following table presents the amounts of gain (loss) recognized in the consolidated statements of operations and comprehensive income (loss): Derivatives not designated as hedging instruments Location of recognized gain (loss) Amount of recognized gain (loss) 2022 2021 2020 (Dollars in thousands) Swap transaction on RRS prices (1) Derivative and foreign currency transaction gains (losses) $ — $ (14,540 ) $ — Currency forward contracts (1) Derivative and foreign currency transaction gains (losses) (5,466 ) 1,368 5,175 $ (5,466 ) $ (13,172 ) $ 5,175 Derivatives designated as cash flow hedging instruments Cross currency swap (2) Derivative and foreign currency transaction gains (losses) $ (36,803 ) $ 10,501 $ 21,187 ( 1 not third January 1, 2021 1 April 1, 2021. ( 2 1 There were no 1, 2 3 December 31, 2022. The following table presents the effect of derivative instruments designated as cash flow hedges on the consolidated statements of operations and comprehensive income (loss) for the years ended December 31, 2022, 2021 2020 Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Cross currency swap cash flow hedge: Balance in Other comprehensive income (loss) beginning of period $ 5,745 $ 3,366 $ — Gain or (loss) recognized in Other comprehensive income (loss) (1) (38,628 ) 12,880 24,553 Amount reclassified from Other comprehensive income (loss) into earnings 36,803 (10,501 ) (21,187 ) Balance in Other comprehensive income (loss) end of period $ 3,920 $ 5,745 $ 3,366 ( 1 December 31, 2022, 2021 2020 The estimated net amount of existing gain (loss) that is reported in "Accumulated other comprehensive income (loss)" as of December 31, 2022 12 June 2031. The fair value of the Company’s long-term debt approximates its fair value, except for the following: Fair Value Carrying Amount 2022 2021 2022 2021 (Dollars in millions) (Dollars in millions) Mizrahi Loan $ 71.4 $ — $ 70.3 $ — Convertible Senior Notes 505.3 — 431.3 — HSBC Loan 40.3 50.4 42.9 50.0 Hapoalim Loan 91.1 117.8 98.2 116.1 Discount Loan 81.1 100.2 87.5 100.0 Financing Liability - Dixie Valley 219.8 248.4 242.0 252.9 Olkaria III Loan - DFC 134.2 166.5 138.7 156.7 Olkaria III plant 4 Loan - DEG 2 26.5 34.1 27.5 32.5 Olkaria III plant 1 Loan - DEG 3 23.3 30.1 24.0 28.4 Platanares Loan - DFC 80.2 98.2 79.9 88.1 Amatitlan Loan 14.7 19.8 15.8 19.3 OFC 2 LLC Senior Secured Notes ("OFC 2") 149.8 183.3 158.0 173.3 Don A. Campbell 1 Senior Secured Notes ("DAC 1") 57.4 69.8 62.7 67.9 USG Prudential - NV 23.7 28.9 25.0 26.3 USG Prudential - ID Refinancing (prior year: USG Prudential - ID) 56.8 17.3 61.6 17.3 USG DOE 32.8 39.9 32.8 35.5 Senior Unsecured Bonds 235.1 578.9 255.8 539.6 Senior Unsecured Loan 166.4 204.3 174.8 191.6 Plumstriker 11.2 14.8 11.4 14.7 Other long-term debt 9.2 13.3 10.4 13.6 The fair value of the long-term debt is determined by a valuation model, which is based on a conventional discounted cash flow methodology and utilizes assumptions of current borrowing rates, except for the fair value of the Convertible Senior Notes for which the fair value was estimated based on a quoted bid price of the Notes in an over-the-counter market on the last trading day of the reporting period. A hypothetical change in the quoted bid price will result in a corresponding change in the estimated fair value of the Notes. As disclosed above under Note 1 19 may may may The carrying value of the deposits approximates fair value. The following table presents the fair value of financial instruments as of December 31, 2022: Level 1 Level 2 Level 3 Total (Dollars in millions) Mizrahi Loan $ — $ — $ 71.4 $ 71.4 Convertible Senior Notes — 505.3 — 505.3 HSBC Loan — — 40.3 40.3 Hapoalim Loan — — 91.1 91.1 Discount Loan — — 81.1 81.1 Financing Liability - Dixie Valley — — 219.8 219.8 Olkaria III - DFC — — 134.2 134.2 Olkaria III plant 4 - DEG 2 — — 26.5 26.5 Olkaria III plant 1 - DEG 3 — — 23.3 23.3 Platanares Loan - DFC — — 80.2 80.2 Amatitlan Loan — 14.7 — 14.7 OFC 2 Senior Secured Notes — — 149.8 149.8 DAC 1 Senior Secured Notes — — 57.4 57.4 USG Prudential - NV — — 23.7 23.7 USG Prudential - ID — — 56.8 56.8 USG DOE — — 32.8 32.8 Senior Unsecured Bonds — — 235.1 235.1 Senior Unsecured Loan — — 166.4 166.4 Plumstriker — 11.2 — 11.2 Other long-term debt — — 9.2 9.2 Deposits 13.9 — — 13.9 The following table presents the fair value of financial instruments as of December 31, 2021: Level 1 Level 2 Level 3 Total (Dollars in millions) HSBC Loan $ — $ — $ 50.4 $ 50.4 Hapoalim Loan — — 117.8 117.8 Discount Loan — — 100.2 100.2 Financing Liability - Dixie Valley — — 248.4 248.4 Olkaria III Loan - DFC — — 166.5 166.5 Olkaria III plant 4 - DEG 2 — — 34.1 34.1 Olkaria III plant 1 - DEG 3 — — 30.1 30.1 Platanares Loan - DFC — — 98.2 98.2 Amatitlan Loan — 19.8 — 19.8 Senior Secured Notes: OFC 2 Senior Secured Notes — — 183.3 183.3 DAC 1 Senior Secured Notes — — 69.8 69.8 USG Prudential - NV — — 28.9 28.9 USG Prudential - ID — — 17.3 17.3 USG DOE — — 39.9 39.9 Senior Unsecured Bonds — — 578.9 578.9 Senior Unsecured Loan — — 204.3 204.3 Plumstriker — 14.8 — 14.8 Other long-term debt — — 13.3 13.3 Deposits 17.1 — — 17.1

Note 9 - Property, Plant and Eq

Note 9 - Property, Plant and Equipment and Construction-in-process	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	NOTE 9 PROPERTY, PLANT AND EQUIPMENT AND CONSTRUCTION-IN-PROCESS Property, plant and equipment Property, plant and equipment, net, consist of the following: December 31, 2022 2021 (Dollars in thousands) Land owned by the Company where the geothermal resource is located $ 42,335 $ 40,545 Leasehold improvements 13,230 9,105 Machinery and equipment 350,584 302,367 Land, buildings and office equipment 52,222 48,275 Vehicles 14,115 10,724 Energy storage equipment 91,025 79,805 Solar facility equipment 32,003 — Geothermal and recovered energy generation power plants, including geothermal wells and exploration and resource development costs: United States of America, net of cash grants 2,641,280 2,511,027 Foreign countries 897,657 800,000 Asset retirement cost 48,578 41,157 4,183,029 3,843,005 Less accumulated depreciation (1,689,572 ) (1,548,032 ) Property, plant and equipment, net $ 2,493,457 $ 2,294,973 Depreciation expense for the years ended December 31, 2022, 2021 2020 December 31, 2022, 2021, 2020 U.S. Operations The net book value of the property, plant and equipment, including construction-in-process, located in the United States was approximately $2,830.3 million and $2,502.2 million as of December 31, 2022 2021, December 31, 2022 2021 Foreign Operations The net book value of property, plant and equipment, including construction-in-process, located outside of the United States was approximately $556.4 million and $514.3 million as of December 31, 2022 2021, The Company, through its wholly owned subsidiary, OrPower 4, 4” December 31, 2022 2021, 2033 2036. The Company, through its wholly owned subsidiary, Orzunil I de Electricidad, Limitada (Orzunil), owns a 97% interest in a geothermal power plant in Guatemala. The net book value of the assets related to the power plant was $27.1 million and $17.2 million at December 31, 2022 2021, 2034. The Company, through its wholly owned subsidiary, Ortitlan, Limitada (“Ortitlan”), owns a power plant in Guatemala. The net book value of the assets related to the power plant was $42.3 million and $39.8 million at December 31, 2022 2021, The Company, through its wholly owned subsidiary, GeoPlatanares, signed a BOT contract for the Platanares geothermal project in Honduras with ELCOSA, a privately owned Honduran energy company, for 15 years from the commercial operation date. Platanares sells the electricity produced by the power plants to ENEE, the national utility of Honduras under a 30 2047. December 31, 2022 2021, The Company, through its subsidiary, Guadeloupe Bouillante ("GB"), owns a power plant in Guadeloupe. The net book value of the assets related to the power plant was $43.5 million and $39.4 million at December 31, 2022 2021, Construction-in-process Construction-in-process consists of the following: December 31, 2022 2021 (Dollars in thousands) Projects under exploration and development: Up-front bonus costs $ 5,335 $ 5,335 Exploration and development costs 89,230 44,664 Interest capitalized 703 703 95,268 50,702 Projects under construction: Up-front bonus costs 11,156 39,156 Drilling and construction costs 761,129 611,553 Interest capitalized 25,645 20,072 797,930 670,781 Total $ 893,198 $ 721,483 Projects under exploration and development Up-front Bonus Costs Exploration and Development Costs Interest Capitalized Total (Dollars in thousands) Balance at December 31, 2019 $ 17,018 $ 66,916 $ 703 $ 84,637 Cost incurred during the year — 5,832 — 5,832 Transfer of projects under exploration and development to projects under construction (11,671 ) (27,270 ) — (38,941 ) Balance at December 31, 2020 5,347 45,478 703 51,528 Cost incurred during the year — 2,680 — 2,680 Transfer of projects under exploration and development to projects under construction (12 ) (3,494 ) — (3,506 ) Balance at December 31, 2021 5,335 44,664 703 50,702 Cost incurred during the year — 44,566 — 44,566 Balance at December 31, 2022 $ 5,335 $ 89,230 $ 703 $ 95,268 Projects under construction Up-front Bonus Costs Drilling and Construction Costs Interest Capitalized Total (Dollars in thousands) Balance at December 31, 2019 $ 27,473 $ 258,484 $ 5,961 $ 291,918 Cost incurred during the year — 298,215 3,565 301,780 Transfer of projects under exploration and development to projects under construction 11,671 27,270 — 38,941 Transfer of completed projects to property, plant and equipment — (204,852 ) — (204,852 ) Balance at December 31, 2020 39,144 379,117 9,526 427,787 Cost incurred during the year — 403,296 10,546 413,842 Transfer of projects under exploration and development to projects under construction 12 3,494 — 3,506 Transfer of completed projects to property, plant and equipment — (174,354 ) — (174,354 ) Balance at December 31, 2021 39,156 611,553 20,072 670,781 Cost incurred during the year — 489,953 5,573 495,526 Transfer of completed projects to property, plant and equipment (28,000 ) (340,377 ) — (368,377 ) Balance at December 31, 2022 $ 11,156 $ 761,129 $ 25,645 $ 797,930 Impairment of long-lived assets The Brawley power plant has been generating electricity below its generating capacity of 13MW fourth 2022, no 7MW Based on the above circumstances and indicators, the Brawley power plant was tested for recoverability during the fourth 2022 3 820, December 31, 2022, In estimating the fair value for the power plant, the Company utilized the discounted cash flow approach ("DCF") which is a form of the Income Approach. The DCF approach is based on the present value of the estimated cash flow expected to be generated by the Brawley power plant which is the asset group. The expected cash flow was discounted using a rate of return that reflects the relative risk of the asset, as well as the time value of money. The determination of the Company and asset specific risk-adjusted discount rate is based on the weighted-average cost of capital ("WACC") taking into consideration the value of equity and interest-bearing debt. The Company applied a WACC rate of 9% in the estimation of the Brawley power plant. The Company noted that a 1% not 3 December 31, 2022. Significant unobservable inputs: Average generation capacity (MW) 7 Electricity price escalation (%) 2.2 Cost long-term growth rate 2.2 Average realized electricity price ($/MW) 92.2

Note 10 - Intangible Assets and

Note 10 - Intangible Assets and Goodwill	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	NOTE 10 INTANGIBLE ASSETS AND GOODWILL As of December 31, 2022 2021, The following table summarizes the information related to the Company's intangible assets as of December 31, 2022 2021: December 31, 2022 December 31, 2021 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization (Dollars in thousands) (Dollars in thousands) Amortized intangible assets Electricity segment $ 402,340 $ (104,601 ) $ 417,479 $ (96,250 ) Storage segment 54,310 (18,204 ) 55,973 (13,888 ) Total $ 456,650 $ (122,805 ) $ 473,452 $ (110,138 ) Amortization expense for the years ended December 31, 2022, 2021 2020 There were no additions to intangible assets during 2022. 2021 2020 2021 2020 2 During 2022, December 2022, 2021 2020 may not 2022, 2021 2020, Estimated future amortization expense for the intangible assets as of December 31, 2022 (Dollars in thousands) Year ending December 31: 2023 $ 27,191 2024 26,229 2025 25,911 2026 24,056 2027 22,176 Thereafter 208,282 Total $ 333,845 Goodwill Goodwill amounting to $90.3 million and $90.0 million as of December 31, 2022 2021, 2022, 2021 2020, Changes in the carrying amount of the Company’s goodwill for the years ended December 31, 2022 2021 2022 2021 (Dollars in thousands) Goodwill as of January 1, $ 89,954 $ 24,566 Goodwill acquired (1) — 65,441 Translation differences 371 (53 ) Goodwill as of December 31, $ 90,325 $ 89,954 ( 1 2021 2

Note 11 - Accounts Payable and

Note 11 - Accounts Payable and Accrued Expenses	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	NOTE 11 ACCOUNTS PAYABLE AND ACCRUED EXPENSES Accounts payable and accrued expenses consist of the following: December 31, 2022 2021 (Dollars in thousands) Trade payable $ 77,551 $ 75,164 Salaries and other payroll costs 24,205 25,513 Customer advances 1,060 1,218 Accrued interest 14,063 11,283 Income tax payable 8,393 8,138 Property tax payable 3,271 2,906 Scheduling and transmission 1,000 3,632 Royalty accrual 9,825 6,023 Warranty accrual 1,705 1,579 Other 8,350 7,730 Total $ 149,423 $ 143,186

Note 12 - Long-term Debt, Credi

Note 12 - Long-term Debt, Credit Agreements and Finance Liability	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Long-Term Debt [Text Block]	NOTE 12 LONG-TERM DEBT, CREDIT AGREEMENTS AND FINANCE LIABILITY Long-term debt consists of the following loan agreements: December 31, 2022 2021 (Dollars in thousands) Limited and non-recourse agreements (1) : Limited recourse: Loan agreement with DFC (the Olkaria III power plant) $ 138,663 $ 156,657 Loan agreement with DFC (the Platanares power plant) $ 79,880 88,073 Loan agreement with Banco Industrial S.A. and Westrust Bank (International) Limited $ 15,750 19,250 Loan agreement with a global industrial company (the Plumstriker battery energy storage projects) $ 11,392 14,726 Loans assumed in the purchase of USG $ 119,392 79,064 Other loans $ 4,585 5,930 OFC 2 Senior Secured Notes $ 158,036 173,321 Non-recourse: DAC 1 Senior Secured Notes $ 62,698 67,939 Other loans $ 5,805 7,697 Total limited and non-recourse agreements $ 596,201 612,657 Less current portion $ (64,044 ) (61,695 ) Noncurrent portion $ 532,157 $ 550,962 Full recourse agreements (1) : Senior Unsecured Bonds (Series 3 and Series 4) $ 255,754 $ 539,567 Senior Unsecured Loan (Migdal) $ 174,800 191,600 Hapoalim, Mizrahi, HSBC and Discount loans $ 298,884 266,071 Loan agreements with DEG (the Olkaria III and power plants 4 and 1 upgrade) $ 51,528 60,896 Total full recourse agreements $ 780,966 1,058,134 Less current portion $ (101,460 ) (313,846 ) Noncurrent portion $ 679,506 $ 744,288 Convertible senior notes (all noncurrent) (1) $ 431,250 $ — Financing liability $ 242,029 $ 252,864 Less current portion $ (16,270 ) $ (10,835 ) Noncurrent portion $ 225,759 $ 242,029 ( 1 Full-Recourse Third-Party Debt Mizrahi Bank Loan On April 12, 2022, October 12, 2022. not not not December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Mizrahi Loan $ 75.0 $ 70.3 4.10 % April 2030 ( 1 Bank Hapoalim Loan On July 12, 2021, December 12, 2021. not not not December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Hapoalim Loan $ 125.0 $ 98.2 3.45 % June 2028 ( 1 HSBC Bank Loan On July 15, 2021, January 19, 2022. not not not December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) HSBC Loan $ 50.0 $ 42.9 3.45 % July 2028 ( 1 The proceeds from Hapoalim Loan and HSBC Loan were used to pay for the purchase of the geothermal assets portfolio from TG Geothermal Portfolio, LLC as described above in Note 2 Discount Bank Loan On September 2, 2021, March 2, 2022. not not not December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Discount Loan $ 100.0 $ 87.5 2.9 % September 2029 ( 1 Senior Unsecured Bonds - Series 4 On July 1, 2020, 4” 4 4 December 2020 June 2022 4. 4 2 December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Senior Unsecured Bonds - Series 4 $ 289.8 $ 255.8 3.35 % June 2031 ( 1 Cross Currency Swap Concurrently with the issuance of the Senior Unsecured Bonds - Series 4, 4 4, 815, 4. Senior Unsecured Bonds - Series 3 As described under Note 1 June 27, 2022, 3 September 2022 second 2022 Senior Unsecured Loan On March 22, 2018 15 September 15, 2021, March 15, 2029. The Loan is subject to early redemption by the Company prior to maturity from time to time (but not no no 4.5, The Migdal Loan Agreement includes various affirmative and negative covenants, including a covenant that the Company maintain (i) a debt to adjusted EBITDA ratio below 6, not not 25%. December 31, 2022, On March 25, 2019, first March 22, 2018. September 15, 2021, March 15, 2029. In April 2020, second March 22, 2018. September 15, 2021 September 15, 2028. one March 15, 2029. Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Migdal Loan $ 100.0 $ 87.4 4.80 % March 2029 Additional Migdal Loan 50.0 43.7 4.60 % March 2029 Second Addendum Migdal Loan 50.0 43.7 5.44 % March 2029 Total Senior Unsecured Loan $ 200.0 $ 174.8 ( 1 Loan Agreements with DEG (the Olkaria III Complex) On October 20, 2016, 4 2 December 21, 2016, 4 2 2 20 December 21, 2018, June 21, 2028. 2 4 4 2 1 3 2 On January 4, 2019, 4 3 February 28, 2019, 4 3 3 June 21, 2019, June 21, 2028. 3 4 1 3 1 3 3 December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) DEG 2 Loan $ 50.0 $ 27.5 6.28 % June 2028 DEG 3 Loan 41.5 24.0 6.04 % June 2028 $ 91.5 $ 51.5 ( 1 Non-Recourse and Limited-Recourse Third-Party Debt Finance Agreement with DFC (formerly OPIC) (the Olkaria III Complex) On August 23, 2012, 4, The OPIC Loan is comprised of up to three Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) OPIC Loan - Tranche I $ 85.0 $ 37.8 6.34 % December 2030 OPIC Loan - Tranche II 180.0 79.4 6.29 % June 2030 OPIC Loan - Tranche III 45.0 21.5 6.12 % December 2030 Total OPIC Loan $ 310.0 $ 138.7 ( 1 The OPIC Loan is collateralized by substantially all of OrPower 4’s 4. 12 December 31, 2022, Finance Agreement with DFC (the Platanares power plant) On April 30, 2018, October 2018. Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) DFC - Platanares Loan $ 114.7 $ 79.9 7.02 % September 2032 ( 1 The Platanares Loan is secured by a first Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited On July 31, 2015, The loan is payable in 48 quarterly payments commencing September 30, 2015. per annum Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Amatitlan Loan $ 42.0 $ 15.8 LIBOR+4.35% June 2027 ( 1 There are various restrictive covenants under the Amatitlan credit agreement. These include, among other things, (i) a financial covenant to maintain a Debt Service Coverage Ratio (as defined in the credit agreement) and (ii) limitations on Restricted Payments (as defined in the credit agreement) that among other things would limit dividends that could be paid. As of December 31, 2022, no Plumstriker Loan On May 4, 2019, two two 20 On May 30, 2019, three 29 14 June 30, 2019. not no December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Plumstriker Loan $ 23.5 $ 11.4 LIBOR+3.5% May 2026 ( 1 Don A. Campbell Senior Secured Notes Non-Recourse On November 29, 2016, 47 47” 47 47 1 1933, 47 first 1” The net proceeds from the sale of the DAC 1 1 The DAC 1 47 47. 47 47 47 47 December 31, 2022, not 47. Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) DAC 1 Senior Secured Notes $ 92.5 $ 62.7 4.03 % September 2033 ( 1 OFC 2 In September 2011, 2, 2’s 2 2 2 2 December 31, 2034. 2 1705 2005, 2 2 On October 31, 2011, 2 2032 On August 29, 2014, 2 2 second 1705 2005. The OFC 2 2 2. 2 2 2. 2 December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) OFC 2 Senior Secured Notes - Series A $ 151.7 $ 71.8 4.69 % December 2032 OFC 2 Senior Secured Notes - Series C 140.0 86.3 4.61 % December 2032 Total OFC 2 Senior Secured Notes $ 291.7 $ 158.1 ( 1 The Company provided a guaranty in connection with the issuance of the Series A Notes and Series C Notes. The guaranty may 2 2 may 2 2 2 2 2 not Other Limited Recourse Loans On April 24, 2018, Prudential Capital Group Idaho In May 2016, November 2022, Idaho Refinancing Note On November 28, 2022, March 2023 ( The Idaho Refinancing note purchase agreement also includes an approximately $4.3 million revolving note tranche to be issued in the event of a shortfall in debt service with respect to the Idaho Refinancing Note. The Issuer shall pay a commitment fee on the revolving note tranche at a rate of 0.5% per annum. If drawn, the revolving notes shall bear interest at a rate of Term SOFR + 140bps. The Idaho Refinancing is secured by the Issuer’s 100% ownership interests in Raft River Energy I LLC, which owns the Raft River geothermal project, and by the Issuer’s 60% ownership interests in Oregon USG Holdings, LLC, the owner of USG Oregon LLC, which owns the Neal Hot Springs geothermal project. The Idaho Refinancing Note will be repaid in 31 semi-annual payments, commencing on March 31st, 2023. March 31, 2038. There are various restrictive covenants under the Idaho Refinancing, including limitations on additional indebtedness of the Issuer and its subsidiaries. Failure to comply with these and other covenants will, subject to customary cure rights, constitute an event of default by the Issuer. In addition, there are restrictions on the ability of the Issuer to make distributions to its shareholders. Among other things, the distribution restrictions include both a historical and projected minimum debt service coverage ratio requirement. As of December 31, 2022, As part of the security package, the note purchase agreement states the Issuer shall establish and maintain customary reserve accounts which include a debt service reserve account, a make-up well reserve account, a maintenance reserve account and a construction reserve account. U.S. Department of Energy On August 31, 2011, first December 31, 2022, Prudential Capital Group Nevada On September 26, 2013, December 31, 2022, Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Idaho Refinancing Note $ 61.6 $ 61.6 6.26 % March 2038 U.S. Department of Energy 96.8 32.8 2.60 % February 2035 Prudential Capital Group – Nevada 30.7 25.0 6.75 % December 2037 Total $ 189.1 $ 119.4 ( 1 Bpifrance Loan - Non Recourse On April 4, 2019, April 29, 2019, 1.93%. 20 June 30, 2021. March 31, 2026. not December 31, 2022, Soci t G n rale Loan - Limited Recourse On April 9, 2019, April 29, 2019, July 29, 2019. April 29, 2026. one December 31, 2022, Convertible Senior Notes Details related to the Notes are provided under Note 1 Financing Liability On July 13, 2021, two 67.5 one September 2015 June 2038. September 2024. 2 December 31, 2022, Amount Outstanding as of Annual Maturity Loan December 31, 2022 Interest Rate (1) Date (2) (Dollar in millions) Financing Liability - Dixie Valley $ 242.0 2.55 % March 2033 ( 1 ( 2 September 2024. Revolving Credit Lines with Commercial Banks As of December 31, 2022, one one March 2023 July 2025. December 31, 2022, Credit Agreements Credit Agreement with MUFG Union Bank Ormat Nevada has a credit agreement with MUFG Union Bank under which it has an aggregate available credit of up to $60.0 million as of December 31, 2022. June 30, 2023. The facility is limited to the issuance, extension, modification or amendment of letters of credit. Union Bank is currently the sole lender and issuing bank under the credit agreement, but is also designated as an administrative agent on behalf of banks that may, There are various restrictive covenants under the credit agreement, which include a requirement to comply with the following financial ratios, which are measured quarterly: (i) a 12 not 4.5; 12 not 1.35; not 2.0. December 31, 2022: ( 12 2.04; 12 3.91; December 31, 2022, As of December 31, 2022, Credit Agreement with HSBC Bank USA N.A. Ormat Nevada has a credit agreement with HSBC Bank USA, N.A for one October 31, 2023. December 31, 2022, There are various restrictive covenants under the credit agreement, including a requirement to comply with the following financial ratios, which are measured quarterly: (i) a 12 not 4.5; 12 not 1.35; not 2.0. December 31, 2022: ( 12 2.04; 12 3.91; December 31, 2022, As of December 31, 2022, Chubb Surety Bond In May 2017, may may no may twenty not December 31, 2022, Restrictive Covenants The Company’s obligations under the credit agreements, the loan agreements, and the trust instrument governing the bonds, described above, are unsecured, but are subject to a negative pledge in favor of the banks and the other lenders and certain other restrictive covenants. These include, among other things, a prohibition on: (i) creating any floating charge or any permanent pledge, charge or lien over the Company's assets without obtaining the prior written approval of the lender; (ii) guaranteeing the liabilities of any third third no 12 not 6. December 31, 2022: ( 12 December 31, 2022. December 31, 2022, Future minimum payments Future minimum payments under long-term obligations, including long-term debt and the financing liability, as of December 31, 2022 (Dollars in thousands) Year ending December 31: 2023 $ 181,660 2024 261,622 2025 176,309 2026 177,539 2027 605,013 Thereafter 650,458 Total $ 2,052,601

Note 13 - Tax Monetization Tran

Note 13 - Tax Monetization Transactions	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Disclosure Of Investments In And Advances To Affiliates [Text Block]	NOTE 13 TAX MONETIZATION TRANSACTIONS Casa Diablo IV ( "CD4" On December 23, 2022, one CD4 CD4 Under the transaction documents, prior to December 31, 2031 ( 4 CD4 not CD4 CD4 On the Target Flip Date, the Company has the option to purchase the private investor’s interests at the then-current fair market value, plus an amount that causes JPM to reach its target return, if needed. If the Company exercises this purchase option, it will become the sole owner of the project again. JPM’s capital contribution of $50.3 Steamboat Hills tax monetization transaction On October 25, 2021, one Under the transaction documents, prior to December 31, 2029 ( not On the Steamboat Hills Target Flip Date, Ormat Nevada has the option to purchase the private investor’s interests at the then-current fair market value, plus an amount that causes the private investor to reach its target return, if needed. If Ormat Nevada exercises this purchase option, it will become the sole owner of the project again. McGinness Hills 3 On August 14, 2019, one 3 3 Pursuant to the transaction documents, prior to December 31, 2027 ( “MGH3 one 3 MGH3 not MGH3 MGH3 On the MGH3 one Tungsten Mountain tax monetization transaction On May 17, 2018, one Under the transaction documents, prior to December 31, 2026 ( not On the Tungsten Mountain Target Flip Date, Ormat Nevada has the option to purchase the private investor’s interests at the then-current fair market value, plus an amount that causes the private investor to reach its target return, if needed. If Ormat Nevada exercises this purchase option, it will become the sole owner of the project again. Opal Geo tax monetization transaction On December 16, 2016, December 16, 2016, five December 31, 2022. December 22, 2022, one In connection with the transactions contemplated by the Equity Contribution Agreement and the LLC Agreement, Ormat Nevada transferred its indirect ownership interest in the McGinness Hills (Phase I and Phase II), Tuscarora, Jersey Valley and second 2” 2 Pursuant to the Equity Contribution Agreement, in December 2016, 2 December 31, 2022. not 2023, one Under the original LLC Agreement, until December 31, 2022, December 31, 2022, Under the LLC Agreement, all items of Opal Geo income and loss, gain, deduction and credit (including the federal production tax credits relating to the operation of the two two no two Under the LLC Agreement, OrLeaf, which owns 100% of the Class A Membership Interests in Opal Geo, serves as the managing member of Opal Geo and control the day-to-day management of Opal Geo and its portfolio of five may five 2 five The LLC Agreement contains certain customary restrictions on transfer applicable to both OrLeaf and JPM with respect to their respective Membership Interests in Opal Geo, and also provides OrLeaf with a right of first may December 22, 2022, December 31, 2023, not December 31, 2023. Pursuant to the Equity Contribution Agreement, the Company has provided a guaranty for the benefit of JPM of certain of OrLeaf’s indemnification obligations to JPM under the LLC Agreement. In addition, Ormat Nevada also provided a guaranty for the benefit of JPM of all present and future payment and performance obligations of OrLeaf under the LLC Agreement and each ancillary document to which OrLeaf is a party.

Note 14 - Asset Retirement Obli

Note 14 - Asset Retirement Obligation	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Asset Retirement Obligation Disclosure [Text Block]	NOTE 14 ASSET RETIREMENT OBLIGATION The following table presents a reconciliation of the beginning and ending aggregate carrying amount of asset retirement obligation for the years presented below: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Balance at beginning of year $ 84,891 $ 63,457 $ 50,183 Revision in estimated cash flows (1,802 ) 10,504 (165 ) Liabilities incurred and acquired 9,314 6,953 10,207 Accretion expense 5,257 3,977 3,232 Balance at end of year $ 97,660 $ 84,891 $ 63,457

Note 15 - Stock-based Compensat

Note 15 - Stock-based Compensation	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	NOTE 15 STOCK-BASED COMPENSATION The Company makes an estimate of expected forfeitures and recognizes compensation costs only for those stock-based awards expected to vest. As of December 31, 2022, During the years ended December 31, 2022, 2021 2020, Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Cost of revenues $ 6,382 $ 4,656 $ 4,435 Selling and marketing expenses 1,230 766 1,081 General and administrative expenses 4,034 3,746 4,314 Total stock-based compensation expense 11,646 9,168 9,830 Tax effect on stock-based compensation expense 1,270 872 858 Net effect of stock-based compensation expense $ 10,376 $ 8,296 $ 8,972 During the fourth 2022, 2021 2020, Valuation assumptions The Company estimates the fair value of the stock-based awards using the Complex Lattice, Tree-based option-pricing model. The dividend yield forecast is expected to be at least 20% of the Company’s yearly net profit, which is equivalent to a 0.7% yearly weighted average dividend rate in the year ended December 31, 2022. The Company calculated the fair value of each stock-based award on the date of grant based on the following assumptions: Year Ended December 31, 2022 2021 2020 For stock based awards issued by the Company: Risk-free interest rates 1.7 % 0.7 % 0.4 % Expected lives (in weighted average years) 5.3 3.8 5.8 Dividend yield 0.7 % 0.6 % 0.6 % Expected volatility (weighted average) 34.6 % 36.7 % 28.8 % The Company estimated the forfeiture rate (on a weighted average basis) as follows: Year Ended December 31, 2022 2021 2020 Weighted average forfeiture rate 10.2 % 6.1 % 8.2 % Stock-based awards The 2012 In May 2012, 2012 2012 2012 second third fourth 2012 one first third fourth six ten 2012 2012 May 2018 2018 “2018 2012 The 2018 In May 2018, 2018 2018 2018 2018 2018 second third fourth 2018 first six ten 2018 June 2022, 2018 one As of December 31, 2022, 2018 On November 30, 2022, 2018 2 3 The average fair value of each RSU on the grant date was $89. The Company calculated the fair value of each RSU on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 4.13% - 4.38% Expected life (in years) 2 - 3 Dividend yield 0.56% Expected volatility (weighted average) 43.17% - 40.57% On March 1, 2022, 2018 six 2 4 The average fair value of each SAR, RSU and PSU on the grant date was $22.3, $69.6 and $75.3, respectively. The Company calculated the fair value of each SAR on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 1.31% - 1.62% Expected life (in years) 2 - 6 Dividend yield 0.67% Expected volatility (weighted average) 32.85% - 46.07% On November 2021, 2018 one The average fair value of each RSU on the grant date was $76.2. The Company calculated the fair value of each RSU on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 0.14% - 0.16% Expected life (in years) 1 Dividend yield 0.65% Expected volatility (weighted average) 43.26% On December 31, 2020, 2018 six 2 4 The average fair value of each SAR, RSU and PSU on the grant date was $25.50, $89.15 and $96.10, respectively. The Company calculated the fair value of each SAR on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 0.13% - 0.51% Expected life (in years) 2 - 6 Dividend yield 0.61% Expected volatility (weighted average) 37.68% - 30.15% On November 3, 2020, 2018 six one The average fair value of each SAR and RSU on the grant date was $18.25 and $67.13, respectively. The Company calculated the fair value of each SAR on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 0.12% - 0.44% Expected life (in years) 1 - 6 Dividend yield 0.61% Expected volatility (weighted average) 45.2% - 29.4% On May 12, 2020, 2018 six The fair value of each SAR, RSU and PSU on the grant date was $17.6, $67.2 and $73.2, respectively. The Company calculated the fair value of each SAR on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 0.44% Expected life (in years) 2 - 6 Dividend yield 0.63% Expected volatility (weighted average) 28.14% On June 15, 2020, 2018 six The fair value of each SAR, RSU and PSU on the grant date was $18.0, $68.0 and $65.0, respectively. The Company calculated the fair value of each SAR on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 0.44% - 0.28% Expected life (in years) 2 - 6 Dividend yield 0.64% Expected volatility (weighted average) 28.5% - 35.2% On July 1, 2020, 2018 six The fair value of each SAR, RSU and PSU on the grant date was $16.5, $62.3 and $57.3, respectively. The Company calculated the fair value of each SAR on the grant date using the complex lattice, tree-based option-pricing model based on the following assumptions: Risk-free interest rates 0.41% - 0.17% Expected life (in years) 2 - 6 Dividend yield 0.64% Expected volatility (weighted average) 28.5% - 35.7% Information on the awards outstanding and the related weighted average exercise price as of and for the years ended December 31, 2022, 2021 2020 Year Ended December 31, 2022 2021 2020 Awards (In thousands) Weighted Average Exercise Price Awards (In thousands) Weighted Average Exercise Price Awards (In thousands) Weighted Average Exercise Price Outstanding at beginning of year 2,025 $ 58.70 2,240 $ 57.68 1,792 $ 50.39 Granted: SARs (1) 513 71.15 15 77.22 957 68.82 RSUs (2) 109 — 12 — 35 — PSUs (3) 20 — — — 25 — Exercised (728 ) 52.73 (159 ) 40.47 (469 ) 45.71 Forfeited (129 ) 62.27 (83 ) 64.34 (100 ) 55.05 Expired — — — — — — Outstanding at end of year 1,810 60.08 2,025 58.70 2,240 57.68 Options and SARs exercisable at end of year 749 58.30 881 53.20 704 51.64 Weighted-average fair value of awards granted during the year $ 33.02 $ 46.23 $ 20.84 ( 1 Upon exercise, SARs entitle the recipient to receive shares of common stock equal to the increase in value of the award between the grant date and the exercise date. ( 2 An RSU represents the right to receive one ( 3 The Performance shares units shall be paid out based on achievement of three 500 The following table summarizes information about stock-based awards outstanding at December 31, 2022 ( Awards Outstanding Awards Exercisable Exercise Price Number of Stock-based Awards Outstanding Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value Number of Stock-based Awards Exercisable Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value $ — 157 2.1 $ 13,536 — — $ — 51.71 8 2.0 278 6 2.0 209 53.16 3 1.9 108 3 1.9 108 53.44 103 1.5 3,405 103 1.5 3,405 55.16 295 0.9 9,236 295 0.9 9,236 57.97 8 1.6 214 8 1.6 214 63.35 74 0.9 1,719 74 0.9 1,719 63.40 45 3.5 1,047 23 3.5 524 67.54 7 3.9 125 7 3.9 125 68.34 47 3.4 849 23 3.4 424 69.14 539 3.4 9,357 199 3.4 3,456 71.15 499 5.2 7,644 — 5.2 — 71.71 4 2.6 59 3 2.6 44 76.43 5 2.9 49 5 2.9 49 76.54 9 4.9 85 — 4.9 — 78.53 6 4.3 51 — 4.3 — 90.28 1 4.0 — — 4 — 1,810 3.1 $ 47,762 749 1.8 $ 19,513 The following table summarizes information about stock-based awards outstanding at December 31, 2021 ( Awards Outstanding Awards Exercisable Exercise Price Number of Stock-based Awards Outstanding Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value Number of Stock-based Awards Exercisable Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value $ — 66 1.3 $ 5,208 — — $ — 42.87 187 0.5 6,796 187 0.5 6,796 47.46 15 1.9 478 15 1.9 478 51.71 8 3.0 221 4 3.0 110 53.16 31 2.9 819 26 2.9 689 53.44 386 2.5 9,985 227 2.5 5,859 55.16 296 1.9 7,137 296 1.9 7,137 57.97 15 2.6 320 15 2.6 320 58.79 1 0.5 19 1 0.5 19 63.35 88 1.9 1,401 88 1.9 1,401 63.40 45 4.5 721 — 4.5 — 67.54 12 4.9 139 12 4.9 139 68.34 47 4.4 513 — 4.4 — 69.14 799 4.4 8,123 1 4.4 12 71.71 4 3.6 30 2 3.6 15 72.14 0 0 — — 0 — 76.43 8 3.9 24 8 3.9 24 90.28 1 5 — — 5 — 2,025 3.0 $ 41,967 882 1.8 $ 22,999 The aggregate intrinsic value in the above tables represents the total pretax intrinsic value, based on the Company’s stock price of $86.48 and $79.30 as of December 31, 2022 2021, December 31, 2022 2021 The total pretax intrinsic value of options exercised during the year ended December 31, 2022 2021 December 31, 2022 2021,

Note 16 - Interest Expense, Net

Note 16 - Interest Expense, Net	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Interest Expense Disclosure [Text Block]	NOTE 16 INTEREST EXPENSE, NET The components of interest expense are as follows: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Interest related to sale of tax benefits $ 14,853 $ 12,246 $ 9,344 Interest expense 91,617 84,994 $ 79,018 Less — amount capitalized (18,727 ) (14,582 ) $ (10,409 ) $ 87,743 $ 82,658 $ 77,953

Note 17 - Income Taxes

Note 17 - Income Taxes	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 17 INCOME TAXES U.S. and foreign components of income from continuing operations, before income taxes and equity in income (losses) of investees consisted of: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) U.S $ 23,709 $ 37,032 $ 43,273 Non-U.S. (foreign) 71,900 66,519 125,444 Total income from continuing operations, before income taxes and equity in losses $ 95,609 $ 103,551 $ 168,717 The components of the provision (benefit) for income taxes, net are as follows: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Current: Federal $ 641 $ — $ — State 2,227 400 363 Foreign 29,370 25,096 61,574 Total current income tax expense $ 32,238 $ 25,496 $ 61,937 Deferred: Federal (17,179 ) (3,267 ) 22,682 State 2,649 9,301 7,277 Foreign (2,966 ) (6,680 ) (24,893 ) Total deferred tax provision (benefit) (17,496 ) (646 ) 5,066 Total Income tax provision $ 14,742 $ 24,850 $ 67,003 Reconciliation of the U.S. federal statutory tax rate to the Company’s effective income tax rate is as follows: Year Ended December 31, 2022 2021 2020 U.S. federal statutory tax rate 21.0 % 21.0 % 21.0 % Foreign tax credits (3.8 ) (0.4 ) (0.3 ) Withholding tax 0.2 6.0 4.4 Valuation allowance - U.S. (9.3 ) (10.4 ) 3.0 State income tax, net of federal benefit 5.3 8.8 3.8 Uncertain tax positions 0.9 3.6 (7.5 ) Effect of foreign income tax, net 6.2 (5.2 ) 8.5 Production tax credits (4.0 ) (4.2 ) (1.8 ) Tax on global intangible low-tax income 4.8 9.3 11.1 Noncontrolling interest (2.2 ) (2.5 ) (1.6 ) Other, net (3.7 ) (1.9 ) (0.9 ) Effective tax rate 15.4 % 24.0 % 39.7 % The net deferred tax assets and liabilities consist of the following: December 31, 2022 2021 (Dollars in thousands) Deferred tax assets (liabilities): Net foreign deferred taxes, primarily depreciation $ (49,295 ) $ (54,899 ) Depreciation 50,214 (62,906 ) Intangible drilling costs (13,855 ) (11,501 ) Net operating loss carryforward - U.S. 26,824 32,848 Tax monetization transaction (84,585 ) (62,533 ) Right-of-use assets (5,824 ) (5,101 ) Lease liabilities 5,527 5,148 Production tax credits 109,109 108,103 Foreign tax credits 32,333 92,240 Withholding tax (21,007 ) (20,521 ) Basis difference in partnership interest (51,392 ) (45,683 ) Excess business interest 522 13,662 Sale and leaseback transaction 62,939 64,070 Other assets 13,655 12,998 Accrued liabilities and other 5,208 4,161 Total 80,373 70,086 Less - valuation allowance (2,473 ) (11,298 ) Total, net $ 77,900 $ 58,788 The following table presents a reconciliation of the beginning and ending valuation allowance: 2022 2021 (Dollars in thousands) Balance at beginning of the year $ 11,298 $ 22,193 Additions to valuation allowance 35 2,029 Release of valuation allowance (8,860 ) (12,924 ) Balance at end of the year $ 2,473 $ 11,298 At December 31, 2022, 2018 2038. At December 31, 2022, 2026. December 31, 2022, 2027. At December 31, 2022, 2025 2042 December 31, 2022, The Company has recorded deferred tax assets for net operating losses, foreign tax credits, and production tax credits. Realization of the deferred tax assets and tax credits is dependent on generating sufficient taxable income in appropriate jurisdictions prior to expiration of the NOL carryforwards and tax credits. Based upon available evidence of the Company’s ability to generate additional taxable income in the future and historical losses in prior years, a valuation allowance in the amount of $2.5 million and $11.3 million is recorded against the U.S. deferred tax assets as of December 31, 2022 2021, not not On April 24, 2018, 382, not not The FASB released guidance Staff Q&A, Topic 740, No. 5, The following table presents the deferred taxes on the balance sheet as of the dates indicated: Year Ended December 31, 2022 2021 (Dollars in thousands) Non-current deferred tax assets $ 161,365 $ 143,450 Non-current deferred tax liabilities (83,465 ) (84,662 ) Non-current deferred tax assets, net 77,900 58,788 Uncertain tax benefit offset (1) (95 ) (95 ) $ 77,805 $ 58,693 ( 1 2013 11, At December 31, 2022, no December 31, 2022, Uncertain tax positions The Company is subject to income taxes in the United States (federal and state) and numerous foreign jurisdictions. Significant judgment is required in evaluating the Company's tax positions and determining its provision for income taxes. During the ordinary course of business, there are many transactions and calculations for which the ultimate tax determination is uncertain. The Company establishes reserves for tax-related uncertainties based on estimates of whether, and the extent to which additional taxes will be due. These reserves are established when the Company believes that certain positions might be challenged despite evidence supporting the position. The Company adjusts these reserves in light of changing facts and circumstances, such as the outcome of tax audits. The provision for income taxes includes the impact of reserve positions and changes to reserves that are considered probable. At December 31, 2022 2021, A reconciliation of the Company's unrecognized tax benefits is as follows: Year Ended December 31, 2022 2021 (Dollars in thousands) Balance at beginning of year $ 5,076 $ 1,673 Additions based on tax positions taken in prior years — 9 Additions based on tax positions taken in the current year 364 3,408 Reduction based on tax positions taken in prior years (47 ) (14 ) Reduction based on tax positions taken in the current year (93 ) — Balance at end of year $ 5,300 $ 5,076 The Company and its U.S. subsidiaries file consolidated income tax returns for federal and state (where applicable) purposes. As of December 31, 2022, not The Company remains open to examination by the Internal Revenue Service for the years 2002 2021 2006 2021. may The Company’s foreign subsidiaries remain open to examination by the local income tax authorities in the following countries for the years indicated: Israel 2019 - 2022 Kenya 2018 - 2022 Guatemala 2018 - 2022 Honduras 2017 - 2022 Guadeloupe 2019 - 2022 Management believes that the liability for unrecognized tax benefits is adequate for all open tax years based on its assessment of many factors, including among others, past experience and interpretations of local income tax regulations. This assessment relies on estimates and assumptions and may not twelve Tax benefits in the United States On August 16, 2022, 2.75 3.30 30.0%, 50.0%. December 31, 2022. third The Company views the enactment of the IRA as favorable for the overall business climate for its sector. However, the Company continues to evaluate the overall impact and applicability of the IRA to the Company’s current and planned projects and the markets in which it seeks to sell its products. Income taxes related to foreign operations Guadeloupe 2019, 2020, 2021 2022. Guatemala ten August 2017. August 2017, Honduras - first ten September 2017. Israel 2017 2018 1959 two January 2011, 2014 2011. On December 29, 2016, “73 two January 20, 2021, 12% 2018, 2019 2020. The Investment Law also included a specific order that allowed companies to distribute earnings that were previously untaxed after paying a reduced corporate tax rate of 10% 25% 10% 2021 Kenya

Note 18 - Business Segments

Note 18 - Business Segments	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 18 BUSINESS SEGMENTS The Company has three • Under the Electricity segment, the Company builds, owns and operates geothermal, solar PV and recovered energy-based power plants in the United States and geothermal power plants in foreign countries, and sell the electricity generated by those power plants. • Under the Product segment, the Company designs, manufactures and sells equipment for geothermal and recovered energy-based electricity generation and provide services relating to the engineering, procurement and construction of geothermal and recovered energy-based power plants. • Under the Energy Storage segment, the Company provides energy storage and related services as well as services relating to the engineering, procurement, construction, operation and maintenance of energy storage units. Transfer prices between the operating segments were determined on current market values or cost plus markup of the seller’s business segment. Summarized financial information concerning the Company’s reportable segments is shown in the following tables, including, as further described under Note 1 606: Electricity Product Energy Storage Consolidated (Dollars in thousands) Year Ended December 31, 2022: Revenues from external customers: United States (1) $ 446,000 $ 7,037 $ 31,018 $ 484,055 Foreign (2) 185,727 64,377 — 250,104 Net revenues from external customers 631,727 71,414 31,018 734,159 Intersegment revenues — 83,394 — — Depreciation and amortization expense 179,966 7,302 11,524 198,792 Operating income (loss) 156,178 (1,084 ) (2,291 ) 152,803 Segment assets at period end (3) (*) 4,253,910 118,018 239,651 4,611,579 Expenditures for long-lived assets 462,269 16,352 84,855 563,476 * Including unconsolidated investments 115,693 — — 115,693 Year Ended December 31, 2021: Revenues from external customers: United States (1) 404,303 5,414 30,393 440,110 Foreign (2) 181,468 41,506 — 222,974 Net revenues from external customers $ 585,771 $ 46,920 $ 30,393 $ 663,084 Intersegment revenues — 129,589 — — Depreciation and amortization expense 164,490 7,719 10,763 182,972 Operating income (loss) 171,550 (3,641 ) 1,448 169,357 Segment assets at period end (3) (*) 4,142,341 113,817 169,520 4,425,678 Expenditures for long-lived assets 383,307 10,687 25,278 419,272 * Including unconsolidated investments 105,886 — — 105,886 Year Ended December 31, 2020: Revenues from external customers: United States (1) 341,399 5,800 15,824 363,023 Foreign (2) 199,994 142,325 — 342,319 Net revenues from external customers 541,393 148,125 15,824 705,342 Intersegment revenues — 113,200 — — Depreciation and amortization expense 144,357 6,010 6,245 156,612 Operating income (loss) 205,256 13,145 (4,388 ) 214,013 Segment assets at period end (3) (*) 3,607,384 145,911 135,692 3,888,987 Expenditures for long-lived assets 267,843 18,011 34,884 320,738 * Including unconsolidated investments 98,217 — — 98,217 ( 1 Electricity segment revenues in the United States are all accounted under lease accounting, except for $102.5 million, $83.4 million and $68.1 million for the years 2022, 2021 2020, 606. 606, 1 ( 2 Electricity segment revenues in foreign countries are all accounted under lease accounting. Product and Energy Storage segment revenues in foreign countries are accounted under ASC 606 1 ( 3 Electricity segment assets include goodwill in the amount of $85.7 million, $85.3 million and $20.5 million as of December 31, 2022, 2021 2020, third 2021 2 December 31, 2022, 2021 2020, December 31, 2022, 2021 2020. Reconciling information between reportable segments and the Company’s consolidated totals is shown in the following table: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Revenues: Total segment revenues $ 734,159 $ 663,084 $ 705,342 Intersegment revenues 83,394 129,589 113,200 Elimination of intersegment revenues (83,394 ) (129,589 ) (113,200 ) Total consolidated revenues $ 734,159 $ 663,084 $ 705,342 Operating income (expense): Operating income $ 152,803 $ 169,357 $ 214,013 Interest income 3,417 2,124 1,717 Interest expense, net (87,743 ) (82,658 ) (77,953 ) Derivatives and foreign currency transaction gains (losses) (6,044 ) (14,720 ) 3,802 Income attributable to sale of tax benefits 33,885 29,582 25,720 Other non-operating income (expense), net (709 ) (134 ) 1,418 Total consolidated income before income taxes and equity in earnings (losses) of investees $ 95,609 $ 103,551 $ 168,717 The Company sells electricity, products and energy storage services mainly to the geographical areas set forth below based on the location of the customer. The following tables present certain data by geographic: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Revenues from external customers attributable to: United States $ 484,055 $ 440,110 $ 363,023 Indonesia 15,631 8,056 — Kenya 105,837 102,844 115,474 Turkey 1,961 2,723 65,535 Chile 579 7,035 32,418 Guatemala 28,831 26,868 27,391 New Zealand 17,130 6,770 34,985 Honduras 33,837 35,233 35,197 Other foreign countries 46,298 33,445 31,319 Consolidated total $ 734,159 $ 663,084 $ 705,342 Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Long-lived assets (primarily power plants and related assets) located in: United States $ 2,857,503 $ 2,527,429 $ 2,084,021 Kenya 301,491 297,427 289,266 Other foreign countries 254,878 217,371 232,953 Consolidated total $ 3,413,872 $ 3,042,227 $ 2,606,240 The following table presents revenues from major customers: Year Ended December 31, 2022 2021 2020 Revenues % Revenues % Revenues % (Dollars in thousands) (Dollars in thousands) (Dollars in thousands) Southern California Public Power (1) $ 157,663 21.5 $ 157,318 23.7 $ 145,450 20.6 Sierra Pacific Power Company and Nevada Power Company (1)(2) 124,116 16.9 120,206 18.1 123,734 17.5 KPLC (1) 105,837 14.4 102,844 15.5 115,474 16.4 ( 1 ( 2

Note 19 - Transactions With Rel

Note 19 - Transactions With Related Entities	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	NOTE 19 TRANSACTIONS WITH RELATED ENTITIES There were no

Note 20 - Employee Benefit Plan

Note 20 - Employee Benefit Plan	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Retirement Benefits [Text Block]	NOTE 20 EMPLOYEE BENEFIT PLAN 401 The Company has a 401 60 2022, 2021 2020, one December 31, 2022, 2021 2020, Severance plan The Company, through Ormat Systems, provides limited non-pension benefits to all current employees in Israel who are entitled to benefits in the event of termination or retirement in accordance with the Israeli Government sponsored programs. These plans generally obligate the Company to pay one no December 31, 2022 2021, not may not December 31, 2022, 2021 2020 The Company expects to pay the following future benefits to its employees upon their reaching normal retirement age: (Dollars in thousands) Year ending December 31: 2023 $ 2,156 2024 81 2025 508 2026 406 2027 529 2028-2045 8,467 Total $ 12,147 The above amounts were determined based on the employees’ current salary rates and the number of years’ service that will have been accumulated at their retirement date. These amounts do not On February 21, 2023, 23

Note 21 - Commitments and Conti

Note 21 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 21 COMMITMENTS AND CONTINGENCIES Geothermal resources The Company, through its project subsidiaries in the United States and other foreign locations, controls certain rights to geothermal fluids through certain leases with the BLM or through private leases. Royalties on the utilization of the geothermal resources are computed and paid to the lessors as defined in the respective agreements. Royalty expense under the geothermal resource agreements were $30.1 million, $25.2 million and $20.8 million for the years ended December 31, 2022, 2021 2020, Letters of credit In the ordinary course of business with customers, vendors, and lenders, the Company is contingently liable for performance under letters of credit totaling $197.4 million at December 31, 2022. not not Purchase commitments The Company purchases raw materials for inventories, construction-in-process and services from a variety of vendors. During the normal course of business, in order to manage manufacturing lead times and help assure adequate supply, the Company enters into agreements with contract manufacturers and suppliers that either allow them to procure goods and services based upon specifications defined by the Company, or that establish parameters defining the Company’s requirements. At December 31, 2022, 2023. Grants and royalties The Company, through Ormat Systems, had historically, through December 31, 2003, December 31, 2022, 2021 2020. not not December 31, 2022 2021, 2022 2021, Lease commitments The Company's lease commitments are detailed under Note 22, Contingencies • On December 15, 2021, No January 4, 2022. January 14, 2022, 90 June 15, 2022, February 2022. August 1, 2022 90 not April 4, 2022, 1973 July 6, 2022 7 first 12 7 February 14, 2023. no may December 31, 2022, In addition, from time to time, the Company is named as a party to various other lawsuits, claims and other legal and regulatory proceedings that arise in the ordinary course of the Company's business. These actions typically seek, among other things, compensation for alleged personal injury, breach of contract, property damage, punitive damages, civil penalties or other losses, or injunctive or declaratory relief. With respect to such lawsuits, claims and proceedings, the Company accrues reserves when a loss is probable, and the amount of such loss can be reasonably estimated. It is the opinion of the Company’s management that the outcome of these proceedings, individually and collectively, will not Other matters On March 2, 2021,

Note 22 - Leases

Note 22 - Leases	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Leases of Lessee and Lessor Disclosure [Text Block]	NOTE 22 LEASES The Company is a lessee in operating and finance lease transactions primarily consisting of land leases for its exploration and development activities and fleet vehicles, respectively. The Company is a lessor in PPAs that are accounted under lease accounting, as further described under Note 1 A. Leases in which the Company is a lessee The table below presents the effects on the amounts relating to total lease cost: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Lease cost Finance lease cost: Amortization of right-of-use assets $ 2,861 $ 3,265 $ 3,422 Interest on lease liabilities 441 770 1,226 Operating lease cost 3,695 3,707 3,303 Variable lease cost 3,893 2,368 1,891 Short-term lease cost — — — Total lease cost $ 10,890 $ 10,110 $ 9,842 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for finance leases $ 441 $ 770 $ 1,226 Operating cash flows for operating leases 4,507 3,589 3,213 Financing cash flows for finance leases 2,983 3,181 2,890 Right-of-use assets obtained in exchange for new finance lease liabilities 2,473 948 1,028 Right-of-use assets obtained in exchange for new operating lease liabilities 6,286 5,227 2,614 December 31, December 31, Additional information as of the end of the year: 2022 2021 Weighted-average remaining lease term — finance leases (in years) 1.8 2.8 Weighted-average remaining lease term — operating leases (in years) 17.9 17.1 Weighted-average discount rate — finance leases (in percentage) 3 % 3 % Weighted-average discount rate — operating leases (in percentage) 5 % 5 % Future minimum lease payments under non-cancellable leases as of December 31, 2022 Operating Leases Finance Leases Financing Liability (1) (Dollars in thousands) Year ending December 31, 2023 $ 2,925 $ 1,710 $ 22,368 2024 2,547 1,031 102,074 2025 2,225 866 13,324 2026 2,086 483 18,118 2027 1,897 29 17,403 Thereafter 22,686 0 96,059 Total future minimum lease payments 34,366 4,119 269,346 Less imputed interest 12,231 276 27,317 Total $ 22,135 $ 3,843 $ 242,029 ( 1 2 B. Leases in which the Company is a lessor The table below presents the lease income recognized as a lessor: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Lease income relating to lease payments of operating leases $ 529,264 $ 502,355 $ 473,260

Note 23 - Subsequent Events

Note 23 - Subsequent Events	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 23 SUBSEQUENT EVENTS Cash dividend On February 22, 2023, March 8, 2023 , March 22, 2023 . Change in Control Severance Plan On February 21, 2023, may three 24 200% 150% 1 2, 18 may 12 18 1 2,

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Description Of Business [Policy Text Block]	Business The Company is primarily engaged in the geothermal and recovered energy business and primarily designs, develops, builds, sells, owns and operates clean, environmentally friendly geothermal and recovered energy-based power plants, usually using equipment that it designs and manufactures. The Company owns and operates geothermal and recovered energy-based power plants in various countries, including the United States, Kenya, Guatemala, Guadeloupe and Honduras. The Company’s equipment manufacturing operations are primarily located in Israel. Additionally, the Company owns and operates independent storage facilities in the United States providing energy storage and related services. Most of the Company’s domestic power plant facilities are Qualifying Facilities under the PURPA. The Power Purchase Agreements for certain of such facilities are dependent upon their maintaining Qualifying Facility status.
Rounding [Policy Text Block]	Rounding Dollar amounts, except per share data, in the notes to these financial statements are rounded to the closest $1,000,
Basis of Accounting, Policy [Policy Text Block]	Basis of presentation The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of the Company and of all majority-owned subsidiaries in which the Company exercises control over operating and financial policies, and variable interest entities in which the Company has an interest and is the primary beneficiary. Intercompany accounts and transactions have been eliminated in consolidation. Investments in less-than-majority-owned entities or other entities in which the Company exercises significant influence over operating and financial policies are accounted for using the equity method of accounting or consolidated if they are a variable interest entity in which the Company has an interest and is the primary beneficiary. Under the equity method, original investments are recorded at cost and adjusted by the Company’s share of undistributed earnings or losses of such companies. The Company’s earnings or losses in investments accounted for under the equity method have been reflected as “equity in earnings (losses) of investees, net” on the Company’s consolidated statements of operations and comprehensive income (loss).
Use of Estimates, Policy [Policy Text Block]	Use of estimates in preparation of financial statements The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of such financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. The most significant estimates with regard to the Company’s consolidated financial statements relate to the useful lives of property, plant and equipment, impairment of goodwill and long-lived assets, including intangible assets, revenue recognition of product sales using the percentage of completion method, asset retirement obligations, and the provision for income taxes.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and cash equivalents The Company considers all highly liquid instruments, with an original maturity of three
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Restricted cash, cash equivalents, and marketable securities Under the terms of certain long-term debt agreements, the Company is required to maintain certain debt service reserves, including principal and interest, cash collateral and operating fund accounts, including for future wells drilling, that have been classified as restricted cash and cash equivalents. Funds that will be used to satisfy obligations due during the next 12
Reconciliation of Cash and Cash Equivalents and Restricted Cash [Policy Text Block]	Reconciliation of cash and cash equivalents and restricted cash and cash equivalents The following table provides a reconciliation of cash and cash equivalents and restricted cash and cash equivalents reported on the balance sheets that sum to the total of the same amounts shown on the statement of cash flows: December 31, 2022 2021 2020 (Dollars in thousands) Cash and cash equivalents $ 95,872 $ 239,278 $ 448,252 Restricted cash and cash equivalents 130,804 104,166 88,526 Total cash and cash equivalents and restricted cash and cash equivalents $ 226,676 $ 343,444 $ 536,778
Marketable Securities, Policy [Policy Text Block]	Marketable securities The Company’s investments in marketable securities consist of debt securities with maturity of up to one three $0.1
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of credit risk Financial instruments which potentially subject the Company to concentration of credit risk consist principally of temporary cash investments, marketable securities, accounts receivable and the cross-currency swap transaction. The Company places its temporary cash investments with high credit quality financial institutions located in the U.S. and in foreign countries. At December 31, 2022 2021, ten $250,000 December 31, 2022 2021, not At December 31, 2022 2021, December 31, 2022 2021, 18 10% December 31, 2022 2021 The Company has historically been able to collect substantially all of its receivable balances. As of December 31, 2022, January February 2023. In Honduras, as of December 31, 2022, February 2023. 19 may The Company may 19 Additionally, the Company considers the counterparty credit risk related to the cross-currency swap, as further described in note 12 December 31, 2022.
Inventory, Policy [Policy Text Block]	Inventories Inventories consist primarily of raw material parts and sub-assemblies for power units and are stated at the lower of cost or net realizable value, using the weighted-average cost method. Inventories are reduced by a provision for slow-moving and obsolete inventories. This provision was not December 31, 2022 2021.
Deposit Contracts, Policy [Policy Text Block]	Deposits and other Deposits and other consist primarily of performance bonds for construction and storage projects, long-term insurance contract funds and receivables, certain deferred costs and derivative instrument receivables.
Property, Plant and Equipment, Impairment [Policy Text Block]	Property, plant and equipment, net Property, plant and equipment are stated at cost. All costs associated with the acquisition, development and construction of power plants operated by the Company are capitalized. Major improvements are capitalized and repairs and maintenance (including major maintenance) costs are expensed. Power plants operated by the Company, which include geothermal wells and exploration and resource development costs, are depreciated using the straight-line method over their estimated useful lives, which range from 15 to 30 years. The other assets are depreciated using the straight-line method over the following estimated useful lives of the assets: Years Buildings 25 Leasehold improvements 15 - 30 Machinery and equipment — manufacturing and drilling 10 Machinery and equipment — computers 3 - 5 Energy storage equipment 15 Solar facility equipment 30 Office equipment — furniture and fixtures 5 - 15 Office equipment — other 5 - 10 Vehicles 5 - 7 The cost and accumulated depreciation of items sold or retired are removed from the accounts. Any resulting gain or loss is recognized currently and recorded in the accompanying statements of operations. The Company capitalizes interest costs as part of constructing power plant facilities. Such capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life. Capitalized interest costs amounted to $18.7 million, $14.6 million, and $10.4 million for the years ended December 31, 2022, 2021 2020, During the fourth 2022,
Exploratory Drilling Costs Capitalization and Impairment, Policy [Policy Text Block]	Exploration and development costs The Company capitalizes costs incurred in connection with the exploration and development of geothermal resources once it acquires land rights to the potential geothermal resource. Prior to acquiring land rights, the Company makes an initial assessment that an economically feasible geothermal reservoir is probable on that land. The Company determines the economic feasibility of potential geothermal resources internally, with all available data and external assessments vetted through the exploration department and occasionally using outside service providers. Costs associated with the initial assessment are expensed and included in cost of electricity revenues in the consolidated statements of operations and comprehensive income (loss). Such costs were immaterial during the years ended December 31, 2022, 2021 2020. two three may In most cases, the Company obtains the right to conduct the geothermal development and operations on land owned by the Bureau of Land Management ("BLM"), various states or with private parties. The land lease payments made during the exploration, development and construction phase are accounted under lease accounting as further described under the caption Leases below and reflected as expenses under “Electricity cost of revenues” in the consolidated statements of operations and comprehensive income (loss). Upon commencement of power generation on the leased land, the Company begins to pay the lessor’s long-term royalty payments based on the utilization of the geothermal resources as defined in the respective agreements. Such payments are expensed when the related revenues are earned and included in “Electricity cost of revenues” in the consolidated statements of operations and comprehensive income (loss). Following the acquisition of land rights to the potential geothermal resource, the Company conducts further studies and surveys, including water and soil analyses, among others, and augments its database with the results of these studies. The Company then initiates a suite of geophysical surveys to assess the resource and determine drilling locations. If the results of these activities support the initial assessment of the feasibility of the geothermal resource, the Company then proceeds to exploratory drilling and other related activities which may may not When deciding whether to continue holding lease rights and/or to pursue exploration activity, the Company diligently prioritizes prospective investments, taking into account resource and probability assessments in order to make informed decisions about whether a particular project will support commercial operation. There was no December 31, 2022, 2021 2020. 2022 All exploration and development costs that are being capitalized will be depreciated over their estimated useful lives when the related geothermal power plant is substantially complete and ready for use. A geothermal power plant is substantially complete and ready for use when electricity generation commences.
Asset Retirement Obligation [Policy Text Block]	Asset retirement obligation The Company records the fair value of a legal liability for an asset retirement obligation in the period in which it is incurred. The Company’s legal liabilities include plugging wells and post-closure costs of power producing and storage sites. When a new liability for asset retirement obligations is recorded, the Company capitalizes the costs of the liability by increasing the carrying amount of the related long-lived asset. The liability is accreted to its present value each period, and the capitalized cost is depreciated over the useful life of the related asset. The Company periodically reassesses the assumptions used to estimate the expected cash flows required to settle the asset retirement obligation, including changes in estimated probabilities, amounts, and timing of the settlement of the asset retirement obligation, as well as changes in the legal requirements of an obligation and revises the previously recorded asset retirement obligation accordingly. At retirement, the obligation is settled for its recorded amount at a gain or loss.
Deferred Financing And Lease Transaction Costs [Policy Text Block]	Deferred financing costs Deferred financing costs are presented as a direct deduction from the carrying value of the associated debt liability or under "Deposits and other" if associated with lines of credit. Such deferred costs are amortized over the term of the related obligation using the effective interest method or ratably, as applicable. Amortization of deferred financing costs is presented as interest expense in the consolidated statements of operations and comprehensive income (loss). Amortization expense for the years ended December 31, 2022, 2021 2020 December 31, 2022, 2021 2020,
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill Goodwill represents the excess of the fair value of consideration transferred in the business combination transactions over the fair value of tangible and intangible assets acquired, net of the fair value of liabilities assumed and the fair value of any noncontrolling interest in the acquisitions. Goodwill is not December 31 not first not no not 2017 04, 350 not 10
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	Intangible assets Intangible assets consist of allocated acquisition costs of PPAs, which are amortized using the straight-line method over the 6 to 19-year terms of the agreements (see Note 10 may not no no not
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of long-lived assets and long-lived assets to be disposed of The Company evaluates long-lived assets, such as property, plant and equipment and construction-in-process for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not not not not The Company tests its operating plants that are operated together as a complex for impairment at the complex level because the cash flows of such plants result from significant shared operating activities. For example, the operating power plants in a complex are managed under a combined operation management generally with one one not not not Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated future net undiscounted cash flows expected to be generated by the asset. The significant assumptions that the Company uses in estimating its undiscounted future cash flows include: (i) projected generating capacity of the complex or power plant and rates to be received under the respective PPAs and expected market rates thereafter and (ii) projected operating expenses of the relevant complex or power plant. Estimates of future cash flows used to test recoverability of a long-lived asset under development also include cash flows associated with all future expenditures necessary to develop the asset. If the assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds their fair value. Management believes that no impairment exists for long-lived assets, except as detailed below in respect of the Brawley power plant; however, estimates as to the recoverability of such assets may may During the fourth 2022, 9 December 31, 2022, no
Derivatives, Policy [Policy Text Block]	Derivative instruments Derivative instruments (including certain derivative instruments embedded in other contracts) are measured at their fair value and recorded as either assets or liabilities unless exempted from derivative treatment as a normal purchase and sale. Changes in the fair value of derivatives not The Company maintains a risk management strategy that may
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign currency translation The U.S. dollar is the functional currency for all of the Company’s consolidated operations and those of its equity affiliates except the Guadeloupe power plant and operations in New Zealand. For those entities, all gains and losses from currency translations are included under “Derivatives and foreign currency transaction gains (losses)” in the consolidated statements of operations and comprehensive income (loss). The Euro and New Zealand Dollar are the functional currencies of the Company's operations in Guadeloupe and New Zealand, respectively, and thus the impact from currency translation adjustments in those locations is included as currency translation adjustments in "Accumulated other comprehensive income" in the consolidated statements of equity and in comprehensive income. The accumulated currency translation adjustments amounted to a debit of $3.1 million and a debit of $1.2 million as of December 31, 2022 2021,
Comprehensive Income, Policy [Policy Text Block]	Comprehensive income Comprehensive income includes net income plus other comprehensive income (loss), which for the Company consists primarily of changes in foreign currency translation adjustments, changes in unrealized gains or losses in respect of the Company’s share in derivatives instruments of an unconsolidated investment that qualifies as a cash flow hedge, changes in respect of derivative instruments designated as a cash flow hedge and changes in unrealized gains or losses on marketable securities available-for-sale. The changes in foreign currency translation adjustments during the years ended December 31, 2022, 2021 2020 6 8 3
SCPPA Power Purchase Agreement, Policy [Policy Text Block]	Power purchase agreements Substantially all of the Company’s Electricity revenues are recognized pursuant to PPAs in the United States and in various foreign countries, including Kenya, Guatemala, Guadeloupe and Honduras. These PPAs generally provide for the payment of energy payments or both energy and capacity payments through their respective terms which expire in varying periods from 2022 2047. not first first Pursuant to the terms of certain of the PPAs, the Company may not not may
Revenue [Policy Text Block]	Revenues and cost of revenues Revenues from contracts with customers are recognized in connection with the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Specifically, the Company is required to apply each of the following steps: ( 1 2 3 4 5 Revenues are primarily related to: (i) sale of electricity from geothermal and recovered energy-based power plants owned and operated by the Company; (ii) geothermal and recovered energy-based power plant equipment engineering, sale, construction and installation, and operating services and (iii) Energy storage services as well as services relating to the engineering, procurement, construction, operation and maintenance of energy storage units. Electricity segment revenues five 9 606, 30 60 Product segment revenues third not not no one two In contracts for which the Company determines that control is not Accounting for product contracts that are satisfied over time includes use of several estimates such as variable consideration related to bonuses and penalties and total estimated cost for completing the contract. The estimated amount of variable consideration will be included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not The nature of the Company's product contracts give rise to several modifications or change requests by its customers. Substantially all of the modifications are treated as cumulative catch-ups to revenues since the additional goods are not one Energy Storage segment revenues 606 may Contract assets related to the Company's Product segment reflect revenues recognized and performance obligations satisfied in advance of customer billing. Contract liabilities related to the Company's Product segment reflect customer billing in advance of the satisfaction of performance under the contract. The Company receives payments from customers based on the terms established in the contracts. Total contract assets and contract liabilities as of December 31, 2022 2021 December 31, December 31, 2022 2021 (Dollars in thousands) Contract assets (*) $ 16,405 $ 9,692 Contract liabilities (*) $ (8,785 ) $ (9,248 ) (*) Contract assets and contract liabilities are presented as "Costs and estimated earnings in excess of billings on uncompleted contracts" and "Billings in excess of costs and estimated earnings on uncompleted contracts", respectively, on the consolidated balance sheets. The contract liabilities balance at the beginning of the year was partially recognized as product revenues during the year ended December 31, 2022 The following table presents the significant changes in the contract assets and contract liabilities for the years ended December 31, 2022 2021: Years Ended December 31, 2022 2021 Contract assets Contract liabilities Contract assets Contract liabilities (Dollars in thousands) Recognition of contract liabilities as revenue as a result of performance obligations satisfied $ — $ — $ — $ 3,566 Cash received in advance for which revenues have not yet recognized, net of expenditures made — (2,604 ) — (2,146 ) Reduction of contract assets as a result of rights to consideration becoming unconditional (23,000 ) — (43,518 ) — Contract assets recognized, net of recognized receivables 32,780 — 29,177 — Net change in contract assets and contract liabilities $ 9,780 $ (2,604 ) $ (14,341 ) $ 1,420 The timing of revenue recognition, billings and cash collections results in accounts receivable, contract assets and contract liabilities on the consolidated balance sheet. In the Company's Products segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms, or upon achievement of contractual milestones. Generally, billing occurs subsequent to the recognition of revenue, resulting in contract assets. However, the Company sometimes receives advances or deposits from its customers before revenue can be recognized, resulting in contract liabilities. These assets and liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. The timing of billing its customers and receiving advance payments vary from contract to contract. The majority of payments are received no On December 31, 2022, not The following schedule reconciles revenues accounted under lease accounting and under ASC 606, three December 31, 2022, 2021 2020: Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Electricity revenues accounted under lease accounting $ 529,264 $ 502,355 $ 473,260 Electricity, Product and Energy Storage revenues accounted under ASC 606 204,895 160,729 232,082 Total consolidated revenues $ 734,159 $ 663,084 $ 705,342 Disaggregated revenues from contracts with customers for the years ended December 31, 2022, 2021 2020 18
Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]	Allowance for credit losses The Company performs an analysis of potential credit losses related to its financial instruments that are within the scope of ASU 2018 19, 325, may 19 not The following table describes the changes in the allowance for expected credit losses for the years ended December 31, 2022 2021 Years Ended December 31, 2022 2021 (Dollars in thousands) Beginning balance of the allowance for expected credit losses $ 90 $ 597 Change in the provision for expected credit losses for the period — (507 ) Ending balance of the allowance for expected credit losses $ 90 $ 90
Lessor, Leases [Policy Text Block]	Leases In February 2016, 2016 02, 842 two January 1, 2019 no The Company is a lessee in operating lease transactions primarily consisting of land leases for its exploration and development activities. Additionally, the Company is a lessee in finance lease transactions related to fleet vehicles. As further described under Note 2 one 842, In accordance with the lease standard, for agreements in which the Company is the lessee, the Company applies a unified accounting model by which it recognizes a right-of-use asset ("ROU") and a lease liability at the commencement date of the lease contract for all the leases in which the Company has a right to control identified assets for a specified period of time. The classification of the lease as a finance lease or an operating lease determines the subsequent accounting for the lease arrangement. Upon the adoption of the new standard the Company, both as a lessee and as a lessor, chose to apply the following permitted practical expedients: 1. Not 2. Not 840 840 3. Exclude initial direct costs from measurement of the ROU asset at the date of initial application; 4. Applying the practical expedient (for a lessor) to not 606 606. 5. Applying the practical expedient (for a lessee) regarding the recognition and measurement of short-term leases, for leases for a period of up to 12 6. Applying the practical expedient (for a lessee) to not not 840 842. Since the Company elected to apply the practical expedients above, it applied the lease standard to all contracts entered into before January 1, 2019 840. The significant accounting policies regarding leases that were applied as from January 1, 2019 1. Determining whether an arrangement contains a lease On the inception date of the lease, the Company determines whether the arrangement is a lease or contains a lease, while examining if it conveys the right to control the use of an identified asset for a period of time in exchange for consideration. 2. The Company as a lessee a. Lease classification: At the commencement date, a lease is a finance lease if it meets any one • The lease transfers ownership of the underlying asset to the lessee by the end of the lease term. • The lease grants the lessee an option to purchase the underlying asset that the lessee is reasonably certain to exercise. • The lease term is for the major part of the remaining economic life of the underlying asset. • The present value of the sum of the lease payments and any residual value guaranteed by the lessee that is not • The underlying asset is of such a specialized nature that it is expected to have no b. Leased assets and lease liabilities - initial recognition Upon initial recognition, the Company recognizes a liability at the present value of the lease payments to be made over the lease term, and concurrently recognizes a ROU asset at the same amount of the liability, adjusted for any prepaid or accrued lease payments, plus initial direct costs incurred in respect of the lease. Since the interest rate implicit in the lease is not c. The lease term The lease term is the non-cancellable period of the lease plus periods covered by an extension or termination option if it is reasonably certain that the Company will exercise the option. d. Subsequent measurement of operating leases After lease commencement, the Company measures the lease liability at the present value of the remaining lease payments using the discount rate determined at lease commencement (as long as the discount rate has not e. Subsequent measurement of finance leases After lease commencement, the Company measures the lease liability by increasing the carrying amount to reflect interest on the lease liability and reducing the carrying amount to reflect lease payments made during the period. The Company determines the interest on the lease liability in each period during the lease term as the amount that produces a constant periodic discount rate on the remaining balance of the liability, taking into consideration the reassessment requirements. After lease commencement, the Company measures the ROU assets at cost less any accumulated amortization and any accumulated impairment losses, taking into consideration the reassessment requirements. The Company amortizes the ROU asset on a straight-line basis, unless another systematic basis better represents the pattern in which the Company expects to consume the ROU asset’s future economic benefits. The ROU asset is amortized over the shorter of the lease term or the useful life of the ROU asset. The amortization period related to the finance lease transactions on fleet vehicles is 4-5 years. The total periodic expense (the sum of interest and amortization expense) of a finance lease is typically higher in the early periods and lower in the later periods. f. Variable lease payments: Variable lease payments that depend on an index or a rate On the commencement date, the lease payments may not Other variable lease payments: Variable payments that depend on performance or use of the underlying asset are not 3. The Company as a lessor At lease commencement, the Company as a lessor classifies leases as either finance or operating leases. Finance leases are further classified as a sales-type lease or as a direct financing lease, however, the Company has no Under an operating lease, the Company recognizes the lease payment as income over the lease term, generally as earned or on a straight-line basis.
Termination fee [Policy Text Block]	Termination fee Fees to terminate PPAs are recognized in the period incurred as selling and marketing expenses. No termination fees were incurred during 2022, 2021 2020.
Standard Product Warranty, Policy [Policy Text Block]	Warranty on products sold The Company generally provides a one two December 31, 2022, 2021 2020.
Research and Development Expense, Policy [Policy Text Block]	Research and development Research and development costs incurred by the Company for the development of technologies related to its existing and new geothermal and recovered energy power plants as well as storage facilities are expensed as incurred.
Share-Based Payment Arrangement [Policy Text Block]	Stock-based compensation The Company accounts for stock-based compensation using the fair value method whereby compensation cost is measured at the grant date, based on the calculated fair value of the award, and is recognized as an expense over the requisite employee service period (generally the vesting period of the grant). The Company uses the Complex Lattice, Three-based Option Pricing model to calculate the fair value of the stock-based compensation awards.
Tax Monetization Transactions Policy [Policy Text Block]	Tax monetization Transactions The Company has five 3, CD4 13 470. 810. 835 7.
Income Tax, Policy [Policy Text Block]	Income taxes Income taxes are accounted for using the asset and liability approach, which requires the recognition of taxes payable or refundable for the current year and deferred tax assets and liabilities for the future tax consequences of events that have been recognized in the Company’s financial statements or tax returns. The measurement of current and deferred tax assets and liabilities are based on provisions of the enacted tax law. The Company accounts for investment tax credits and production tax credits as a reduction to income taxes in the year in which the credit arises. The measurement of deferred tax assets is reduced, if necessary, by the amount of any tax benefits that, based on available evidence, are more likely than not not
Earnings Per Share, Policy [Policy Text Block]	Earnings per share Basic earnings per share attributable to the Company’s stockholders (“earnings per share”) is computed by dividing net income attributable to the Company’s stockholders by the weighted average number of shares of common stock outstanding for the period. The Company does not The table below shows the reconciliation of the number of shares used in the computation of basic and diluted earnings per share: Year Ended December 31, 2022 2021 2020 (In thousands) Weighted average number of shares used in computation of basic earnings per share 56,063 56,004 51,567 Add: Additional shares from the assumed exercise of employee stock-based awards 440 398 370 Weighted average number of shares used in computation of diluted earnings per share 56,503 56,402 51,937 The number of stock-based awards that could potentially dilute future earnings per share which were not December 31, 2022, 2021 2020. As per ASU 2020 06, December 31, 2022, not not no 1
Redeemable Noncontrolling Interest, Policy [Policy Text Block]	Redeemable noncontrolling interest Redeemable noncontrolling interest is currently redeemable and relates to a certain noncontrolling shareholder in a subsidiary having an option to sell its equity interest to the Company. The carrying value of the redeemable noncontrolling interest balance as of December 31, 2022 2021 2022 2021 (Dollars in thousands) Redeemable noncontrolling interest as of January 1, $ 9,329 $ 9,830 Redeemable noncontrolling interest in results of operation of a consolidated subsidiary 638 619 Cash paid to noncontrolling interest — (268 ) Currency translation adjustments (377 ) (852 ) Redeemable noncontrolling interest as of December 31, $ 9,590 $ 9,329
Dividend Declared [Policy Text Block]	Cash dividends During the years ended December 31, 2022, 2021 2020,
Convertible Senior Notes [Policy Text Block]	Convertible Senior Notes On June 22, 2022, 2027. 144A 1933, June 27, 2022, January 15 July 15 January 15, 2023. July 15, 2027, Holders of the Notes may January 15, 2027 1 September 30, 2022 ( not 2 five five $1,000 3 may not July 21, 2025), second 4 January 15, 2027 second may may The initial conversion rate was 11.0776 shares of common stock per $1,000 may may not July 21, 2025. may July 21, 2025 41st not may The Company incurred approximately $11.6 million of issuance costs in respect of the issuance of the Notes, which were deferred and are presented as a reduction to the Notes principal amounts on the consolidated balance sheets. The deferred issuance costs are amortized over the term of the Notes into interest expenses, net in the consolidated statements of operations and comprehensive income. During the year ended December 31, 2022, Based on the closing market price of the Company's common stock on December 31, 2022,
Contract Indexed to Issuer's Equity [Policy Text Block]	Capped Call Transactions In connection with the issuance of the convertible notes described above, the Company entered into capped call transactions (the "Capped Calls") with certain counterparties. The capped call transactions will cover, subject to customary adjustments, the number of shares of our common stock initially underlying the Notes of approximately 4.8 million shares of common stock and at an initial strike price of $90.27 per share. The Capped Calls are generally intended to reduce the potential dilution to the Company's Common Stock upon any conversion of the Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted Notes, in the event that at the time of conversion, the Common Stock price exceeds the conversion price. If, however, the market price per share of Common Stock exceeds the cap price of the Capped Calls, there would nevertheless be dilution or there would not The Capped Calls exercise price is equal to the $90.27 initial conversion price of each of the Notes and the cap price of the Capped Calls is initially $107.63 per share, which represents a premium of approximately 55% above the closing price of the Company's common stock on the date of the Notes offering and is subject to customary anti-dilution adjustments. The Capped Calls transactions are separate transactions entered into by the Company with the option counterparties, are not not The Company paid approximately $24.5 million for the Capped Calls which was recorded as a reduction to Additional Paid-in Capital in the consolidated statements of equity in the second 2022, no 815, not
Stockholders' Equity, Policy [Policy Text Block]	Purchase of Treasury Stock In connection with the issuance of the Notes as described above, the Company used approximately $18.0 million of the net proceeds from the issuance of these Notes to repurchase 258,667 shares of its common stock in privately negotiated transactions at a price of $69.45 per share. The Company recorded this purchase of treasury stocks as a reduction to its equity on the consolidated statements of equity in the second 2022.
Unsecured Bonds [Policy Text Block]	Prepayment of Series 3 Additionally, in connection with the issuance of the Notes as described above, on June 27, 2022, 3 September 2022 second 2022
Catastrophe [Policy Text Block]	Heber 1 The Company's 40 1 February 25, 2022 1 81 April, 2022 1 20 second 2023. 2022, 1 1 February In February 2021, one February 15, 2021, 3 3" February 16, 2021 February 19, 2021, February 19, 2021, In addition, the Company recorded a provision for approximately $3.0 million for receivables related to imbalance charges from the grid operator in respect of its demand response operation as it estimated it is probable it may December 31, 2021. The Company has filed billing disputes with ERCOT related to some of the imbalance charges and revenue allocated to its Demand Response services and customers, the outcome of which may
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements New accounting pronouncements effective in the year ended December 31, 2022 Debt with Conversion In August 2020, 2020 06 470 20 815 40 2020 06" 2020 06 December 15, 2021, June 2022, Government Assistance In November 2021, 2021 10 832 1 2 3 2022. not New accounting pronouncements effective in future periods Revenue Contracts Acquired in a Business Combination In October 2021, 2021 08, 805 2021 08" 2021 08 1 2 2021 08 606 2021 08 December 15, 2022 not 2021 08

Note 1 - Business and Signifi_2

Note 1 - Business and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Cash and Cash Equivalents [Table Text Block]	December 31, 2022 2021 2020 (Dollars in thousands) Cash and cash equivalents $ 95,872 $ 239,278 $ 448,252 Restricted cash and cash equivalents 130,804 104,166 88,526 Total cash and cash equivalents and restricted cash and cash equivalents $ 226,676 $ 343,444 $ 536,778
Schedule Of Estimated Useful Lives [Table Text Block]	Years Buildings 25 Leasehold improvements 15 - 30 Machinery and equipment — manufacturing and drilling 10 Machinery and equipment — computers 3 - 5 Energy storage equipment 15 Solar facility equipment 30 Office equipment — furniture and fixtures 5 - 15 Office equipment — other 5 - 10 Vehicles 5 - 7
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	December 31, December 31, 2022 2021 (Dollars in thousands) Contract assets (*) $ 16,405 $ 9,692 Contract liabilities (*) $ (8,785 ) $ (9,248 ) Years Ended December 31, 2022 2021 Contract assets Contract liabilities Contract assets Contract liabilities (Dollars in thousands) Recognition of contract liabilities as revenue as a result of performance obligations satisfied $ — $ — $ — $ 3,566 Cash received in advance for which revenues have not yet recognized, net of expenditures made — (2,604 ) — (2,146 ) Reduction of contract assets as a result of rights to consideration becoming unconditional (23,000 ) — (43,518 ) — Contract assets recognized, net of recognized receivables 32,780 — 29,177 — Net change in contract assets and contract liabilities $ 9,780 $ (2,604 ) $ (14,341 ) $ 1,420
Accounting Standards Update and Change in Accounting Principle [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Electricity revenues accounted under lease accounting $ 529,264 $ 502,355 $ 473,260 Electricity, Product and Energy Storage revenues accounted under ASC 606 204,895 160,729 232,082 Total consolidated revenues $ 734,159 $ 663,084 $ 705,342
Accounts Receivable, Allowance for Credit Loss [Table Text Block]	Years Ended December 31, 2022 2021 (Dollars in thousands) Beginning balance of the allowance for expected credit losses $ 90 $ 597 Change in the provision for expected credit losses for the period — (507 ) Ending balance of the allowance for expected credit losses $ 90 $ 90
Schedule of Weighted Average Number of Shares [Table Text Block]	Year Ended December 31, 2022 2021 2020 (In thousands) Weighted average number of shares used in computation of basic earnings per share 56,063 56,004 51,567 Add: Additional shares from the assumed exercise of employee stock-based awards 440 398 370 Weighted average number of shares used in computation of diluted earnings per share 56,503 56,402 51,937
Redeemable Noncontrolling Interest [Table Text Block]	2022 2021 (Dollars in thousands) Redeemable noncontrolling interest as of January 1, $ 9,329 $ 9,830 Redeemable noncontrolling interest in results of operation of a consolidated subsidiary 638 619 Cash paid to noncontrolling interest — (268 ) Currency translation adjustments (377 ) (852 ) Redeemable noncontrolling interest as of December 31, $ 9,590 $ 9,329

Note 2 - Business Acquisitions

Note 2 - Business Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Cash and cash equivalents and restricted cash $ 10.9 Trade receivables and others (1) 8.6 Deferred income taxes 22.8 Property, plant and equipment and construction-in-process 152.0 Intangible assets (2) 191.6 Goodwill (3) 66.2 Total assets acquired $ 452.1 Accounts payable, accrued expenses and others $ 6.6 Financing liability (4) 258.4 Asset retirement obligation 5.3 Total liabilities assumed $ 270.3 Total assets acquired, and liabilities assumed, net $ 181.8
Business Acquisition, Pro Forma Information [Table Text Block]	Pro forma for the Year Ended December 31, 2021 2020 (Dollars in millions) Electricity revenues $ 613.3 $ 596.6 Total revenues $ 690.6 $ 760.6 Net income attributable to the Company's stockholders $ 69.6 $ 84.3

Note 3 - Marketable Securities

Note 3 - Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Debt Securities, Available-for-Sale [Table Text Block]	December 31, 2022 December 31, 2021 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized Cost Gross unrealized gains Gross unrealized losses Fair value (Dollars in thousands) (Dollars in thousands) Debt security type: Corporate bonds $ — $ — $ — $ — $ 32,302 $ — $ (36 ) $ 32,529 Commercial paper — — — — 8,891 — — 8,891 Money market funds 136 — — 136 3,686 — — 3,686 Foreign issuers — — — — 1,920 — (4 ) 1,923 Total debt securities available for sale $ 136 $ — $ — $ 136 $ 46,799 $ — $ (40 ) $ 47,029
Investments Classified by Contractual Maturity Date [Table Text Block]	December 31, 2022 December 31, 2021 Less than 12 months Greater than 12 months Less than 12 months Greater than 12 months Fair value Gross unrealized loss Fair value Gross unrealized loss Fair value Gross unrealized loss Fair value Gross unrealized loss (Dollars in thousands) (Dollars in thousands) Debt security type: Corporate bonds $ — $ — $ — $ — $ 32,529 $ (36 ) $ — $ — Commercial paper — — — — 8,891 — — — Money market funds 136 — — — 3,686 — — — Foreign issuers — — — — 1,923 (4 ) — — Total debt securities available for sale $ 136 $ — $ — $ — $ 47,029 $ (40 ) $ — $ —

Note 4 - Inventories (Tables)

Note 4 - Inventories (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Raw materials and purchased parts for assembly $ 10,629 $ 11,539 Self-manufactured assembly parts and finished products 12,203 16,906 Total $ 22,832 $ 28,445

Note 5 - Cost and Estimated E_2

Note 5 - Cost and Estimated Earnings on Uncompleted Contracts (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Cost And Estimated Earnings On Uncompleted Contracts [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Costs and estimated earnings incurred on uncompleted contracts $ 155,407 $ 103,486 Less billings to date (147,787 ) (103,042 ) Total $ 7,620 $ 444
Cost and Estimated Earnings on Uncompleted Contracts Included in Consolidated Balance Sheets [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Costs and estimated earnings in excess of billings on uncompleted contracts $ 16,405 $ 9,692 Billings in excess of costs and estimated earnings on uncompleted contracts (8,785 ) (9,248 ) Total $ 7,620 $ 444

Note 6 - Investment in Uncons_2

Note 6 - Investment in Unconsolidated Companies (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Equity Method Investments [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Investment in Sarulla $ 74,881 $ 68,968 Investment in Ijen 40,812 36,918 Total investment in unconsolidated companies $ 115,693 $ 105,886
Other Comprehensive Income (Loss) from Equity Method Investments[Table Text Block]	Year Ended December 31, 2022 2021 (Dollars in thousands) Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment that qualifies as a cash flow hedge $ 8,370 $ 3,892

Note 7 - Variable Interest En_2

Note 7 - Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Variable Interest Entities [Table Text Block]	December 31, 2022 Project Debt PPAs (Dollars in thousands) Assets: Restricted cash and cash equivalents $ 127,972 $ — Other current assets 128,414 29,377 Property, plant and equipment, net 1,516,107 810,384 Construction-in-process 104,956 255,552 Other long-term assets 304,766 51,037 Total assets $ 2,182,215 $ 1,146,350 Liabilities: Accounts payable and accrued expenses $ 42,577 $ 8,552 Long-term debt 637,080 — Other long-term liabilities 400,271 50,348 Total liabilities $ 1,079,928 $ 58,900 December 31, 2021 Project Debt PPAs (Dollars in thousands) Assets: Restricted cash and cash equivalents $ 101,364 $ — Other current assets 122,944 31,781 Property, plant and equipment, net 1,300,941 858,755 Construction-in-process 96,764 270,160 Other long-term assets 326,686 55,441 Total assets $ 1,948,699 $ 1,216,137 Liabilities: Accounts payable and accrued expenses $ 34,155 $ 10,004 Long-term debt 672,804 2,444 Other long-term liabilities 419,085 49,919 Total liabilities $ 1,126,044 $ 62,367

Note 8 - Fair Value of Financ_2

Note 8 - Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	December 31, 2022 Fair Value Carrying Value at December 31, 2022 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Current assets: Cash equivalents (including restricted cash accounts) $ 34,832 $ 34,832 $ 34,832 $ — $ — Marketable securities (including cash equivalents) 136 136 136 — — Derivatives: Long-term assets: Cross currency swap (3) 3,029 3,029 — 3,029 — Liabilities: Current liabilities: Derivatives: Currency forward contracts (2) (800 ) (800 ) — (800 ) — Cross currency swap (3) (2,777 ) (2,777 ) — (2,777 ) — $ 34,420 $ 34,420 $ 34,968 $ (548 ) $ — December 31, 2021 Fair Value Carrying Value at December 31, 2021 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets Current assets: Cash equivalents (including restricted cash accounts) $ 31,675 $ 31,675 $ 31,675 $ — $ — Marketable securities 47,029 47,029 47,029 — — Derivatives: Cross currency swap (3) 1,461 1,461 — 1,461 — Currency forward contracts (2) 813 813 — 813 — Long-term assets: Cross currency swap (3) 37,883 37,883 — 37,883 — Liabilities: Long-term liabilities: Contingent payables (1) (2,425 ) (2,425 ) — — (2,425 ) $ 116,436 $ 116,436 $ 78,704 $ 40,157 $ (2,425 )
Derivative Instruments, Gain (Loss) [Table Text Block]	Derivatives not designated as hedging instruments Location of recognized gain (loss) Amount of recognized gain (loss) 2022 2021 2020 (Dollars in thousands) Swap transaction on RRS prices (1) Derivative and foreign currency transaction gains (losses) $ — $ (14,540 ) $ — Currency forward contracts (1) Derivative and foreign currency transaction gains (losses) (5,466 ) 1,368 5,175 $ (5,466 ) $ (13,172 ) $ 5,175 Derivatives designated as cash flow hedging instruments Cross currency swap (2) Derivative and foreign currency transaction gains (losses) $ (36,803 ) $ 10,501 $ 21,187
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Cross currency swap cash flow hedge: Balance in Other comprehensive income (loss) beginning of period $ 5,745 $ 3,366 $ — Gain or (loss) recognized in Other comprehensive income (loss) (1) (38,628 ) 12,880 24,553 Amount reclassified from Other comprehensive income (loss) into earnings 36,803 (10,501 ) (21,187 ) Balance in Other comprehensive income (loss) end of period $ 3,920 $ 5,745 $ 3,366
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]	Fair Value Carrying Amount 2022 2021 2022 2021 (Dollars in millions) (Dollars in millions) Mizrahi Loan $ 71.4 $ — $ 70.3 $ — Convertible Senior Notes 505.3 — 431.3 — HSBC Loan 40.3 50.4 42.9 50.0 Hapoalim Loan 91.1 117.8 98.2 116.1 Discount Loan 81.1 100.2 87.5 100.0 Financing Liability - Dixie Valley 219.8 248.4 242.0 252.9 Olkaria III Loan - DFC 134.2 166.5 138.7 156.7 Olkaria III plant 4 Loan - DEG 2 26.5 34.1 27.5 32.5 Olkaria III plant 1 Loan - DEG 3 23.3 30.1 24.0 28.4 Platanares Loan - DFC 80.2 98.2 79.9 88.1 Amatitlan Loan 14.7 19.8 15.8 19.3 OFC 2 LLC Senior Secured Notes ("OFC 2") 149.8 183.3 158.0 173.3 Don A. Campbell 1 Senior Secured Notes ("DAC 1") 57.4 69.8 62.7 67.9 USG Prudential - NV 23.7 28.9 25.0 26.3 USG Prudential - ID Refinancing (prior year: USG Prudential - ID) 56.8 17.3 61.6 17.3 USG DOE 32.8 39.9 32.8 35.5 Senior Unsecured Bonds 235.1 578.9 255.8 539.6 Senior Unsecured Loan 166.4 204.3 174.8 191.6 Plumstriker 11.2 14.8 11.4 14.7 Other long-term debt 9.2 13.3 10.4 13.6
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]	Level 1 Level 2 Level 3 Total (Dollars in millions) Mizrahi Loan $ — $ — $ 71.4 $ 71.4 Convertible Senior Notes — 505.3 — 505.3 HSBC Loan — — 40.3 40.3 Hapoalim Loan — — 91.1 91.1 Discount Loan — — 81.1 81.1 Financing Liability - Dixie Valley — — 219.8 219.8 Olkaria III - DFC — — 134.2 134.2 Olkaria III plant 4 - DEG 2 — — 26.5 26.5 Olkaria III plant 1 - DEG 3 — — 23.3 23.3 Platanares Loan - DFC — — 80.2 80.2 Amatitlan Loan — 14.7 — 14.7 OFC 2 Senior Secured Notes — — 149.8 149.8 DAC 1 Senior Secured Notes — — 57.4 57.4 USG Prudential - NV — — 23.7 23.7 USG Prudential - ID — — 56.8 56.8 USG DOE — — 32.8 32.8 Senior Unsecured Bonds — — 235.1 235.1 Senior Unsecured Loan — — 166.4 166.4 Plumstriker — 11.2 — 11.2 Other long-term debt — — 9.2 9.2 Deposits 13.9 — — 13.9 Level 1 Level 2 Level 3 Total (Dollars in millions) HSBC Loan $ — $ — $ 50.4 $ 50.4 Hapoalim Loan — — 117.8 117.8 Discount Loan — — 100.2 100.2 Financing Liability - Dixie Valley — — 248.4 248.4 Olkaria III Loan - DFC — — 166.5 166.5 Olkaria III plant 4 - DEG 2 — — 34.1 34.1 Olkaria III plant 1 - DEG 3 — — 30.1 30.1 Platanares Loan - DFC — — 98.2 98.2 Amatitlan Loan — 19.8 — 19.8 Senior Secured Notes: OFC 2 Senior Secured Notes — — 183.3 183.3 DAC 1 Senior Secured Notes — — 69.8 69.8 USG Prudential - NV — — 28.9 28.9 USG Prudential - ID — — 17.3 17.3 USG DOE — — 39.9 39.9 Senior Unsecured Bonds — — 578.9 578.9 Senior Unsecured Loan — — 204.3 204.3 Plumstriker — 14.8 — 14.8 Other long-term debt — — 13.3 13.3 Deposits 17.1 — — 17.1

Note 9 - Property, Plant and _2

Note 9 - Property, Plant and Equipment and Construction-in-process (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Land owned by the Company where the geothermal resource is located $ 42,335 $ 40,545 Leasehold improvements 13,230 9,105 Machinery and equipment 350,584 302,367 Land, buildings and office equipment 52,222 48,275 Vehicles 14,115 10,724 Energy storage equipment 91,025 79,805 Solar facility equipment 32,003 — Geothermal and recovered energy generation power plants, including geothermal wells and exploration and resource development costs: United States of America, net of cash grants 2,641,280 2,511,027 Foreign countries 897,657 800,000 Asset retirement cost 48,578 41,157 4,183,029 3,843,005 Less accumulated depreciation (1,689,572 ) (1,548,032 ) Property, plant and equipment, net $ 2,493,457 $ 2,294,973
Construction In Progress [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Projects under exploration and development: Up-front bonus costs $ 5,335 $ 5,335 Exploration and development costs 89,230 44,664 Interest capitalized 703 703 95,268 50,702 Projects under construction: Up-front bonus costs 11,156 39,156 Drilling and construction costs 761,129 611,553 Interest capitalized 25,645 20,072 797,930 670,781 Total $ 893,198 $ 721,483
Rollforward Of Construction In Process [Table Text Block]	Projects under exploration and development Up-front Bonus Costs Exploration and Development Costs Interest Capitalized Total (Dollars in thousands) Balance at December 31, 2019 $ 17,018 $ 66,916 $ 703 $ 84,637 Cost incurred during the year — 5,832 — 5,832 Transfer of projects under exploration and development to projects under construction (11,671 ) (27,270 ) — (38,941 ) Balance at December 31, 2020 5,347 45,478 703 51,528 Cost incurred during the year — 2,680 — 2,680 Transfer of projects under exploration and development to projects under construction (12 ) (3,494 ) — (3,506 ) Balance at December 31, 2021 5,335 44,664 703 50,702 Cost incurred during the year — 44,566 — 44,566 Balance at December 31, 2022 $ 5,335 $ 89,230 $ 703 $ 95,268 Projects under construction Up-front Bonus Costs Drilling and Construction Costs Interest Capitalized Total (Dollars in thousands) Balance at December 31, 2019 $ 27,473 $ 258,484 $ 5,961 $ 291,918 Cost incurred during the year — 298,215 3,565 301,780 Transfer of projects under exploration and development to projects under construction 11,671 27,270 — 38,941 Transfer of completed projects to property, plant and equipment — (204,852 ) — (204,852 ) Balance at December 31, 2020 39,144 379,117 9,526 427,787 Cost incurred during the year — 403,296 10,546 413,842 Transfer of projects under exploration and development to projects under construction 12 3,494 — 3,506 Transfer of completed projects to property, plant and equipment — (174,354 ) — (174,354 ) Balance at December 31, 2021 39,156 611,553 20,072 670,781 Cost incurred during the year — 489,953 5,573 495,526 Transfer of completed projects to property, plant and equipment (28,000 ) (340,377 ) — (368,377 ) Balance at December 31, 2022 $ 11,156 $ 761,129 $ 25,645 $ 797,930
North Brawley Geothermal Power Plant [Member]
Notes Tables
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	Significant unobservable inputs: Average generation capacity (MW) 7 Electricity price escalation (%) 2.2 Cost long-term growth rate 2.2 Average realized electricity price ($/MW) 92.2

Note 10 - Intangible Assets a_2

Note 10 - Intangible Assets and Goodwill (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2022 December 31, 2021 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization (Dollars in thousands) (Dollars in thousands) Amortized intangible assets Electricity segment $ 402,340 $ (104,601 ) $ 417,479 $ (96,250 ) Storage segment 54,310 (18,204 ) 55,973 (13,888 ) Total $ 456,650 $ (122,805 ) $ 473,452 $ (110,138 )
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	(Dollars in thousands) Year ending December 31: 2023 $ 27,191 2024 26,229 2025 25,911 2026 24,056 2027 22,176 Thereafter 208,282 Total $ 333,845
Schedule of Goodwill [Table Text Block]	2022 2021 (Dollars in thousands) Goodwill as of January 1, $ 89,954 $ 24,566 Goodwill acquired (1) — 65,441 Translation differences 371 (53 ) Goodwill as of December 31, $ 90,325 $ 89,954

Note 11 - Accounts Payable an_2

Note 11 - Accounts Payable and Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Trade payable $ 77,551 $ 75,164 Salaries and other payroll costs 24,205 25,513 Customer advances 1,060 1,218 Accrued interest 14,063 11,283 Income tax payable 8,393 8,138 Property tax payable 3,271 2,906 Scheduling and transmission 1,000 3,632 Royalty accrual 9,825 6,023 Warranty accrual 1,705 1,579 Other 8,350 7,730 Total $ 149,423 $ 143,186

Note 12 - Long-term Debt, Cre_2

Note 12 - Long-term Debt, Credit Agreements and Finance Liability (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Long-Term Debt Instruments [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Limited and non-recourse agreements (1) : Limited recourse: Loan agreement with DFC (the Olkaria III power plant) $ 138,663 $ 156,657 Loan agreement with DFC (the Platanares power plant) $ 79,880 88,073 Loan agreement with Banco Industrial S.A. and Westrust Bank (International) Limited $ 15,750 19,250 Loan agreement with a global industrial company (the Plumstriker battery energy storage projects) $ 11,392 14,726 Loans assumed in the purchase of USG $ 119,392 79,064 Other loans $ 4,585 5,930 OFC 2 Senior Secured Notes $ 158,036 173,321 Non-recourse: DAC 1 Senior Secured Notes $ 62,698 67,939 Other loans $ 5,805 7,697 Total limited and non-recourse agreements $ 596,201 612,657 Less current portion $ (64,044 ) (61,695 ) Noncurrent portion $ 532,157 $ 550,962 Full recourse agreements (1) : Senior Unsecured Bonds (Series 3 and Series 4) $ 255,754 $ 539,567 Senior Unsecured Loan (Migdal) $ 174,800 191,600 Hapoalim, Mizrahi, HSBC and Discount loans $ 298,884 266,071 Loan agreements with DEG (the Olkaria III and power plants 4 and 1 upgrade) $ 51,528 60,896 Total full recourse agreements $ 780,966 1,058,134 Less current portion $ (101,460 ) (313,846 ) Noncurrent portion $ 679,506 $ 744,288 Convertible senior notes (all noncurrent) (1) $ 431,250 $ — Financing liability $ 242,029 $ 252,864 Less current portion $ (16,270 ) $ (10,835 ) Noncurrent portion $ 225,759 $ 242,029 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Mizrahi Loan $ 75.0 $ 70.3 4.10 % April 2030 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Hapoalim Loan $ 125.0 $ 98.2 3.45 % June 2028 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) HSBC Loan $ 50.0 $ 42.9 3.45 % July 2028 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Discount Loan $ 100.0 $ 87.5 2.9 % September 2029 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Senior Unsecured Bonds - Series 4 $ 289.8 $ 255.8 3.35 % June 2031 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Migdal Loan $ 100.0 $ 87.4 4.80 % March 2029 Additional Migdal Loan 50.0 43.7 4.60 % March 2029 Second Addendum Migdal Loan 50.0 43.7 5.44 % March 2029 Total Senior Unsecured Loan $ 200.0 $ 174.8 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) DEG 2 Loan $ 50.0 $ 27.5 6.28 % June 2028 DEG 3 Loan 41.5 24.0 6.04 % June 2028 $ 91.5 $ 51.5 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) OPIC Loan - Tranche I $ 85.0 $ 37.8 6.34 % December 2030 OPIC Loan - Tranche II 180.0 79.4 6.29 % June 2030 OPIC Loan - Tranche III 45.0 21.5 6.12 % December 2030 Total OPIC Loan $ 310.0 $ 138.7 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) DFC - Platanares Loan $ 114.7 $ 79.9 7.02 % September 2032 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Amatitlan Loan $ 42.0 $ 15.8 LIBOR+4.35% June 2027 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Plumstriker Loan $ 23.5 $ 11.4 LIBOR+3.5% May 2026 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) DAC 1 Senior Secured Notes $ 92.5 $ 62.7 4.03 % September 2033 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) OFC 2 Senior Secured Notes - Series A $ 151.7 $ 71.8 4.69 % December 2032 OFC 2 Senior Secured Notes - Series C 140.0 86.3 4.61 % December 2032 Total OFC 2 Senior Secured Notes $ 291.7 $ 158.1 Amount Amount Outstanding as of Annual Maturity Loan Issued December 31, 2022 Interest Rate (1) Date (Dollars in millions) Idaho Refinancing Note $ 61.6 $ 61.6 6.26 % March 2038 U.S. Department of Energy 96.8 32.8 2.60 % February 2035 Prudential Capital Group – Nevada 30.7 25.0 6.75 % December 2037 Total $ 189.1 $ 119.4 Amount Outstanding as of Annual Maturity Loan December 31, 2022 Interest Rate (1) Date (2) (Dollar in millions) Financing Liability - Dixie Valley $ 242.0 2.55 % March 2033
Schedule of Maturities of Long-Term Debt [Table Text Block]	(Dollars in thousands) Year ending December 31: 2023 $ 181,660 2024 261,622 2025 176,309 2026 177,539 2027 605,013 Thereafter 650,458 Total $ 2,052,601

Note 14 - Asset Retirement Ob_2

Note 14 - Asset Retirement Obligation (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Asset Retirement Obligations [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Balance at beginning of year $ 84,891 $ 63,457 $ 50,183 Revision in estimated cash flows (1,802 ) 10,504 (165 ) Liabilities incurred and acquired 9,314 6,953 10,207 Accretion expense 5,257 3,977 3,232 Balance at end of year $ 97,660 $ 84,891 $ 63,457

Note 15 - Stock-based Compens_2

Note 15 - Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Cost of revenues $ 6,382 $ 4,656 $ 4,435 Selling and marketing expenses 1,230 766 1,081 General and administrative expenses 4,034 3,746 4,314 Total stock-based compensation expense 11,646 9,168 9,830 Tax effect on stock-based compensation expense 1,270 872 858 Net effect of stock-based compensation expense $ 10,376 $ 8,296 $ 8,972
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Year Ended December 31, 2022 2021 2020 For stock based awards issued by the Company: Risk-free interest rates 1.7 % 0.7 % 0.4 % Expected lives (in weighted average years) 5.3 3.8 5.8 Dividend yield 0.7 % 0.6 % 0.6 % Expected volatility (weighted average) 34.6 % 36.7 % 28.8 % Year Ended December 31, 2022 2021 2020 Weighted average forfeiture rate 10.2 % 6.1 % 8.2 % Risk-free interest rates 4.13% - 4.38% Expected life (in years) 2 - 3 Dividend yield 0.56% Expected volatility (weighted average) 43.17% - 40.57% Risk-free interest rates 1.31% - 1.62% Expected life (in years) 2 - 6 Dividend yield 0.67% Expected volatility (weighted average) 32.85% - 46.07% Risk-free interest rates 0.14% - 0.16% Expected life (in years) 1 Dividend yield 0.65% Expected volatility (weighted average) 43.26% Risk-free interest rates 0.13% - 0.51% Expected life (in years) 2 - 6 Dividend yield 0.61% Expected volatility (weighted average) 37.68% - 30.15% Risk-free interest rates 0.12% - 0.44% Expected life (in years) 1 - 6 Dividend yield 0.61% Expected volatility (weighted average) 45.2% - 29.4% Risk-free interest rates 0.44% Expected life (in years) 2 - 6 Dividend yield 0.63% Expected volatility (weighted average) 28.14% Risk-free interest rates 0.44% - 0.28% Expected life (in years) 2 - 6 Dividend yield 0.64% Expected volatility (weighted average) 28.5% - 35.2% Risk-free interest rates 0.41% - 0.17% Expected life (in years) 2 - 6 Dividend yield 0.64% Expected volatility (weighted average) 28.5% - 35.7%
Share-Based Payment Arrangement, Option and Stock Appreciation Rights, Activity [Table Text Block]	Year Ended December 31, 2022 2021 2020 Awards (In thousands) Weighted Average Exercise Price Awards (In thousands) Weighted Average Exercise Price Awards (In thousands) Weighted Average Exercise Price Outstanding at beginning of year 2,025 $ 58.70 2,240 $ 57.68 1,792 $ 50.39 Granted: SARs (1) 513 71.15 15 77.22 957 68.82 RSUs (2) 109 — 12 — 35 — PSUs (3) 20 — — — 25 — Exercised (728 ) 52.73 (159 ) 40.47 (469 ) 45.71 Forfeited (129 ) 62.27 (83 ) 64.34 (100 ) 55.05 Expired — — — — — — Outstanding at end of year 1,810 60.08 2,025 58.70 2,240 57.68 Options and SARs exercisable at end of year 749 58.30 881 53.20 704 51.64 Weighted-average fair value of awards granted during the year $ 33.02 $ 46.23 $ 20.84
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]	Awards Outstanding Awards Exercisable Exercise Price Number of Stock-based Awards Outstanding Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value Number of Stock-based Awards Exercisable Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value $ — 157 2.1 $ 13,536 — — $ — 51.71 8 2.0 278 6 2.0 209 53.16 3 1.9 108 3 1.9 108 53.44 103 1.5 3,405 103 1.5 3,405 55.16 295 0.9 9,236 295 0.9 9,236 57.97 8 1.6 214 8 1.6 214 63.35 74 0.9 1,719 74 0.9 1,719 63.40 45 3.5 1,047 23 3.5 524 67.54 7 3.9 125 7 3.9 125 68.34 47 3.4 849 23 3.4 424 69.14 539 3.4 9,357 199 3.4 3,456 71.15 499 5.2 7,644 — 5.2 — 71.71 4 2.6 59 3 2.6 44 76.43 5 2.9 49 5 2.9 49 76.54 9 4.9 85 — 4.9 — 78.53 6 4.3 51 — 4.3 — 90.28 1 4.0 — — 4 — 1,810 3.1 $ 47,762 749 1.8 $ 19,513 Awards Outstanding Awards Exercisable Exercise Price Number of Stock-based Awards Outstanding Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value Number of Stock-based Awards Exercisable Weighted Average Remaining Contractual Life in Years Aggregate Intrinsic Value $ — 66 1.3 $ 5,208 — — $ — 42.87 187 0.5 6,796 187 0.5 6,796 47.46 15 1.9 478 15 1.9 478 51.71 8 3.0 221 4 3.0 110 53.16 31 2.9 819 26 2.9 689 53.44 386 2.5 9,985 227 2.5 5,859 55.16 296 1.9 7,137 296 1.9 7,137 57.97 15 2.6 320 15 2.6 320 58.79 1 0.5 19 1 0.5 19 63.35 88 1.9 1,401 88 1.9 1,401 63.40 45 4.5 721 — 4.5 — 67.54 12 4.9 139 12 4.9 139 68.34 47 4.4 513 — 4.4 — 69.14 799 4.4 8,123 1 4.4 12 71.71 4 3.6 30 2 3.6 15 72.14 0 0 — — 0 — 76.43 8 3.9 24 8 3.9 24 90.28 1 5 — — 5 — 2,025 3.0 $ 41,967 882 1.8 $ 22,999

Note 16 - Interest Expense, N_2

Note 16 - Interest Expense, Net (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Other Nonoperating Expense, by Component [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Interest related to sale of tax benefits $ 14,853 $ 12,246 $ 9,344 Interest expense 91,617 84,994 $ 79,018 Less — amount capitalized (18,727 ) (14,582 ) $ (10,409 ) $ 87,743 $ 82,658 $ 77,953

Note 17 - Income Taxes (Tables)

Note 17 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) U.S $ 23,709 $ 37,032 $ 43,273 Non-U.S. (foreign) 71,900 66,519 125,444 Total income from continuing operations, before income taxes and equity in losses $ 95,609 $ 103,551 $ 168,717
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Current: Federal $ 641 $ — $ — State 2,227 400 363 Foreign 29,370 25,096 61,574 Total current income tax expense $ 32,238 $ 25,496 $ 61,937 Deferred: Federal (17,179 ) (3,267 ) 22,682 State 2,649 9,301 7,277 Foreign (2,966 ) (6,680 ) (24,893 ) Total deferred tax provision (benefit) (17,496 ) (646 ) 5,066 Total Income tax provision $ 14,742 $ 24,850 $ 67,003
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year Ended December 31, 2022 2021 2020 U.S. federal statutory tax rate 21.0 % 21.0 % 21.0 % Foreign tax credits (3.8 ) (0.4 ) (0.3 ) Withholding tax 0.2 6.0 4.4 Valuation allowance - U.S. (9.3 ) (10.4 ) 3.0 State income tax, net of federal benefit 5.3 8.8 3.8 Uncertain tax positions 0.9 3.6 (7.5 ) Effect of foreign income tax, net 6.2 (5.2 ) 8.5 Production tax credits (4.0 ) (4.2 ) (1.8 ) Tax on global intangible low-tax income 4.8 9.3 11.1 Noncontrolling interest (2.2 ) (2.5 ) (1.6 ) Other, net (3.7 ) (1.9 ) (0.9 ) Effective tax rate 15.4 % 24.0 % 39.7 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2022 2021 (Dollars in thousands) Deferred tax assets (liabilities): Net foreign deferred taxes, primarily depreciation $ (49,295 ) $ (54,899 ) Depreciation 50,214 (62,906 ) Intangible drilling costs (13,855 ) (11,501 ) Net operating loss carryforward - U.S. 26,824 32,848 Tax monetization transaction (84,585 ) (62,533 ) Right-of-use assets (5,824 ) (5,101 ) Lease liabilities 5,527 5,148 Production tax credits 109,109 108,103 Foreign tax credits 32,333 92,240 Withholding tax (21,007 ) (20,521 ) Basis difference in partnership interest (51,392 ) (45,683 ) Excess business interest 522 13,662 Sale and leaseback transaction 62,939 64,070 Other assets 13,655 12,998 Accrued liabilities and other 5,208 4,161 Total 80,373 70,086 Less - valuation allowance (2,473 ) (11,298 ) Total, net $ 77,900 $ 58,788
Summary of Valuation Allowance [Table Text Block]	2022 2021 (Dollars in thousands) Balance at beginning of the year $ 11,298 $ 22,193 Additions to valuation allowance 35 2,029 Release of valuation allowance (8,860 ) (12,924 ) Balance at end of the year $ 2,473 $ 11,298
Schedule of Deferred Taxes Classified in Balance Sheet [Table Text Block]	Year Ended December 31, 2022 2021 (Dollars in thousands) Non-current deferred tax assets $ 161,365 $ 143,450 Non-current deferred tax liabilities (83,465 ) (84,662 ) Non-current deferred tax assets, net 77,900 58,788 Uncertain tax benefit offset (1) (95 ) (95 ) $ 77,805 $ 58,693
Summary of Income Tax Contingencies [Table Text Block]	Year Ended December 31, 2022 2021 (Dollars in thousands) Balance at beginning of year $ 5,076 $ 1,673 Additions based on tax positions taken in prior years — 9 Additions based on tax positions taken in the current year 364 3,408 Reduction based on tax positions taken in prior years (47 ) (14 ) Reduction based on tax positions taken in the current year (93 ) — Balance at end of year $ 5,300 $ 5,076
Summary of Income Tax Examinations [Table Text Block]	Israel 2019 - 2022 Kenya 2018 - 2022 Guatemala 2018 - 2022 Honduras 2017 - 2022 Guadeloupe 2019 - 2022

Note 18 - Business Segments (Ta

Note 18 - Business Segments (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Electricity Product Energy Storage Consolidated (Dollars in thousands) Year Ended December 31, 2022: Revenues from external customers: United States (1) $ 446,000 $ 7,037 $ 31,018 $ 484,055 Foreign (2) 185,727 64,377 — 250,104 Net revenues from external customers 631,727 71,414 31,018 734,159 Intersegment revenues — 83,394 — — Depreciation and amortization expense 179,966 7,302 11,524 198,792 Operating income (loss) 156,178 (1,084 ) (2,291 ) 152,803 Segment assets at period end (3) (*) 4,253,910 118,018 239,651 4,611,579 Expenditures for long-lived assets 462,269 16,352 84,855 563,476 * Including unconsolidated investments 115,693 — — 115,693 Year Ended December 31, 2021: Revenues from external customers: United States (1) 404,303 5,414 30,393 440,110 Foreign (2) 181,468 41,506 — 222,974 Net revenues from external customers $ 585,771 $ 46,920 $ 30,393 $ 663,084 Intersegment revenues — 129,589 — — Depreciation and amortization expense 164,490 7,719 10,763 182,972 Operating income (loss) 171,550 (3,641 ) 1,448 169,357 Segment assets at period end (3) (*) 4,142,341 113,817 169,520 4,425,678 Expenditures for long-lived assets 383,307 10,687 25,278 419,272 * Including unconsolidated investments 105,886 — — 105,886 Year Ended December 31, 2020: Revenues from external customers: United States (1) 341,399 5,800 15,824 363,023 Foreign (2) 199,994 142,325 — 342,319 Net revenues from external customers 541,393 148,125 15,824 705,342 Intersegment revenues — 113,200 — — Depreciation and amortization expense 144,357 6,010 6,245 156,612 Operating income (loss) 205,256 13,145 (4,388 ) 214,013 Segment assets at period end (3) (*) 3,607,384 145,911 135,692 3,888,987 Expenditures for long-lived assets 267,843 18,011 34,884 320,738 * Including unconsolidated investments 98,217 — — 98,217
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Revenues: Total segment revenues $ 734,159 $ 663,084 $ 705,342 Intersegment revenues 83,394 129,589 113,200 Elimination of intersegment revenues (83,394 ) (129,589 ) (113,200 ) Total consolidated revenues $ 734,159 $ 663,084 $ 705,342 Operating income (expense): Operating income $ 152,803 $ 169,357 $ 214,013 Interest income 3,417 2,124 1,717 Interest expense, net (87,743 ) (82,658 ) (77,953 ) Derivatives and foreign currency transaction gains (losses) (6,044 ) (14,720 ) 3,802 Income attributable to sale of tax benefits 33,885 29,582 25,720 Other non-operating income (expense), net (709 ) (134 ) 1,418 Total consolidated income before income taxes and equity in earnings (losses) of investees $ 95,609 $ 103,551 $ 168,717
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Revenues from external customers attributable to: United States $ 484,055 $ 440,110 $ 363,023 Indonesia 15,631 8,056 — Kenya 105,837 102,844 115,474 Turkey 1,961 2,723 65,535 Chile 579 7,035 32,418 Guatemala 28,831 26,868 27,391 New Zealand 17,130 6,770 34,985 Honduras 33,837 35,233 35,197 Other foreign countries 46,298 33,445 31,319 Consolidated total $ 734,159 $ 663,084 $ 705,342
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Long-lived assets (primarily power plants and related assets) located in: United States $ 2,857,503 $ 2,527,429 $ 2,084,021 Kenya 301,491 297,427 289,266 Other foreign countries 254,878 217,371 232,953 Consolidated total $ 3,413,872 $ 3,042,227 $ 2,606,240
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	Year Ended December 31, 2022 2021 2020 Revenues % Revenues % Revenues % (Dollars in thousands) (Dollars in thousands) (Dollars in thousands) Southern California Public Power (1) $ 157,663 21.5 $ 157,318 23.7 $ 145,450 20.6 Sierra Pacific Power Company and Nevada Power Company (1)(2) 124,116 16.9 120,206 18.1 123,734 17.5 KPLC (1) 105,837 14.4 102,844 15.5 115,474 16.4

Note 20 - Employee Benefit Pl_2

Note 20 - Employee Benefit Plan (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Expected Benefit Payments [Table Text Block]	(Dollars in thousands) Year ending December 31: 2023 $ 2,156 2024 81 2025 508 2026 406 2027 529 2028-2045 8,467 Total $ 12,147

Note 22 - Leases (Tables)

Note 22 - Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Lease, Cost [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Lease cost Finance lease cost: Amortization of right-of-use assets $ 2,861 $ 3,265 $ 3,422 Interest on lease liabilities 441 770 1,226 Operating lease cost 3,695 3,707 3,303 Variable lease cost 3,893 2,368 1,891 Short-term lease cost — — — Total lease cost $ 10,890 $ 10,110 $ 9,842 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for finance leases $ 441 $ 770 $ 1,226 Operating cash flows for operating leases 4,507 3,589 3,213 Financing cash flows for finance leases 2,983 3,181 2,890 Right-of-use assets obtained in exchange for new finance lease liabilities 2,473 948 1,028 Right-of-use assets obtained in exchange for new operating lease liabilities 6,286 5,227 2,614 December 31, December 31, Additional information as of the end of the year: 2022 2021 Weighted-average remaining lease term — finance leases (in years) 1.8 2.8 Weighted-average remaining lease term — operating leases (in years) 17.9 17.1 Weighted-average discount rate — finance leases (in percentage) 3 % 3 % Weighted-average discount rate — operating leases (in percentage) 5 % 5 %
Lessee, Lease Liability, Maturity [Table Text Block]	Operating Leases Finance Leases Financing Liability (1) (Dollars in thousands) Year ending December 31, 2023 $ 2,925 $ 1,710 $ 22,368 2024 2,547 1,031 102,074 2025 2,225 866 13,324 2026 2,086 483 18,118 2027 1,897 29 17,403 Thereafter 22,686 0 96,059 Total future minimum lease payments 34,366 4,119 269,346 Less imputed interest 12,231 276 27,317 Total $ 22,135 $ 3,843 $ 242,029
Operating Lease, Lease Income [Table Text Block]	Year Ended December 31, 2022 2021 2020 (Dollars in thousands) Lease income relating to lease payments of operating leases $ 529,264 $ 502,355 $ 473,260

Note 1 - Business and Signifi_3

Note 1 - Business and Significant Accounting Policies 1 (Details Textual) $ / shares in Units, $ in Thousands				2 Months Ended	3 Months Ended		12 Months Ended
	Jun. 27, 2022 USD ($)	Jun. 22, 2022 USD ($) $ / shares shares	Feb. 19, 2021 USD ($)	Feb. 28, 2023 USD ($)	Dec. 31, 2022 USD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Cash, FDIC Insured Amount					$ 10,000		$ 10,000	$ 31,000
Cash, Uninsured Amount					64,300		64,300	64,300
Accounts Receivable, after Allowance for Credit Loss, Current, Total					128,818		128,818	122,944
Interest Costs Capitalized							18,727	14,582	$ 10,409
Exploration Abandonment and Impairment Expense							828	0	0
Amortization of Debt Issuance Costs							4,200	3,200	3,500
Write off of Deferred Debt Issuance Cost							0
Impairment of Long-Lived Assets to be Disposed of							0
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Ending Balance					$ 3,100		3,100	1,200
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total							$ (2,486)	$ (3,236)	$ 3,813
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares							29,200	142,400	369,700
Payments of Dividends, Total							$ 27,100	$ 27,000	$ 22,500
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares							$ 0.48	$ 0.48	$ 0.44
Proceeds from Notes Payable, Total							$ 419,698	$ 0	$ 0
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001			$ 0.001		$ 0.001	$ 0.001
Purchase of Capped Call Instruments							$ 24,538	$ 0	0
Payments for Repurchase of Common Stock						$ 18,000	17,964	0	0
Treasury Stock, Shares, Acquired (in shares) | shares						258,667
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ / shares						$ 69.45
Insurance Recoveries							0	248	$ 20,743
Loss from Catastrophes			$ 9,100
General and Administrative Expense [Member]
Accounts Receivable, Credit Loss Expense (Reversal)								$ 3,000
Fire [Member]
Insurance Recoveries							21,800
Increase (Decrease) in Insurance Settlements Receivable							(8,000)
Gain on Business Interruption Insurance Recovery							13,800
Senior Unsecured Bonds, Series 3 [Member]
Repayments of Long-Term Debt, Total	$ 221,900
Extinguishment of Debt, Amount	218,000
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total	2,800
Debt Instrument, Unamortized Premium, Total	1,100
Call Option [Member]
Option Indexed to Issuer's Equity, Shares (in shares) | shares		4,800,000
Option Indexed to Issuer's Equity, Strike Price (in dollars per share) | $ / shares		$ 90.27
Option Indexed to Issuer's Equity, Cap Price		107.63%
Option Indexed to Issuer's Equity, Premium Percentage		55%
Purchase of Capped Call Instruments						$ 24,500
Convertible Senior Notes [Member]
Amortization of Debt Issuance Costs							$ 1,100
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares		$ 90.27			$ 90.27		$ 90.27
Debt Instrument, Face Amount	431,250	$ 375,000
Debt Instrument, Interest Rate, Stated Percentage		2.50%
Proceeds from Notes Payable, Total	$ 56,250
Debt Instrument, Convertible, Threshold Trading Days		20
Debt Instrument, Convertible, Threshold Consecutive Trading Days		30
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger		130%
Debt Instrument, Convertible, Threshold Trading Days, Measurement Period Request (Year)		5 years
Debt Instrument, Convertible, Maximum Percentage of Stock Price Trigger Per $1000		98%
Debt Instrument, Convertible, Conversion Shares Per $1000		11.0776
Debt Instrument, Redemption Price, Percentage		100%
Debt Instrument, Cumulative Sinking Fund Payments		$ 0
Debt Issuance Costs, Gross					$ 11,600		$ 11,600
Debt Instrument, Interest Rate, Effective Percentage					3.10%		3.10%
Galena 2 Power Purchase Agreement [Member]
Termination Fees							$ 0
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)							6 years
Standard Product Warranty, Term (Year)							1 year
Minimum [Member] | Fleet Vehicles [Member]
Lessee, Finance Lease, Term of Contract (Year)					4 years		4 years
Minimum [Member] | Viridity Energy, Inc. [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year)							6 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)							19 years
Standard Product Warranty, Term (Year)							2 years
Maximum [Member] | Fleet Vehicles [Member]
Lessee, Finance Lease, Term of Contract (Year)					5 years		5 years
Maximum [Member] | Viridity Energy, Inc. [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year)							19 years
Power Plants [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)							15 years
Power Plants [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)							30 years
North Brawley Geothermal Power Plant [Member]
Asset Impairment Charges, Total					$ 30,500
Energy Storage Projects and Customer Related Assets [Member]
Property, Plant and Equipment, Disposals							$ 2,100
Kenya Power and Lighting Co Limited [Member]
Accounts Receivable, Past Due					27,000		27,000
Kenya Power and Lighting Co Limited [Member] | Subsequent Event [Member]
Proceeds, Overdue Accounts Receivable				$ 15,200
ENEE [Member]
Accounts Receivable, Past Due					13,900		$ 13,900
ENEE [Member] | Subsequent Event [Member]
Proceeds, Overdue Accounts Receivable				$ 2,600
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Primary Customers [Member]
Concentration Risk, Percentage							60%	58%
Total Receivables [Member] | Customer Concentration Risk [Member]
Financing Receivable, after Allowance for Credit Loss, Total					89,800		$ 89,800	$ 86,400
Non-US [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total					$ 78,900		$ 78,900	$ 77,500

Note 1 - Business and Signifi_4

Note 1 - Business and Significant Accounting Policies 2 (Details Textual) - Product [Member] - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 $ in Millions	Dec. 31, 2022 USD ($)
Revenue, Remaining Performance Obligation, Amount	$ 113.4
Revenue, Remaining Performance Obligation, Percentage	100%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	24 months

Note 1 - Business and Signifi_5

Note 1 - Business and Significant Accounting Policies - Cash and Restricted Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 95,872	$ 239,278	$ 448,252
Restricted cash and cash equivalents	130,804	104,166	88,526
Total cash and cash equivalents and restricted cash and cash equivalents	$ 226,676	$ 343,444	$ 536,778	$ 153,110

Note 1 - Business and Signifi_6

Note 1 - Business and Significant Accounting Policies - Property, Plant, and Equipment Estimated Useful Life (Details)	12 Months Ended
	Dec. 31, 2022
Building [Member]
Property, plant, and equipment estimated useful lives (Year)	25 years
Leasehold Improvements [Member] | Minimum [Member]
Property, plant, and equipment estimated useful lives (Year)	15 years
Leasehold Improvements [Member] | Maximum [Member]
Property, plant, and equipment estimated useful lives (Year)	30 years
Machinery And Equipment - Manufacturing And Drilling [Member]
Property, plant, and equipment estimated useful lives (Year)	10 years
Machinery and Equipment - Computers [Member] | Minimum [Member]
Property, plant, and equipment estimated useful lives (Year)	3 years
Machinery and Equipment - Computers [Member] | Maximum [Member]
Property, plant, and equipment estimated useful lives (Year)	5 years
Energy Equipment [Member]
Property, plant, and equipment estimated useful lives (Year)	15 years
Solar Facility Equipment [Member]
Property, plant, and equipment estimated useful lives (Year)	30 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, plant, and equipment estimated useful lives (Year)	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, plant, and equipment estimated useful lives (Year)	15 years
Office Equipment - Other [Member] | Minimum [Member]
Property, plant, and equipment estimated useful lives (Year)	5 years
Office Equipment - Other [Member] | Maximum [Member]
Property, plant, and equipment estimated useful lives (Year)	10 years
Vehicles [Member] | Minimum [Member]
Property, plant, and equipment estimated useful lives (Year)	5 years
Vehicles [Member] | Maximum [Member]
Property, plant, and equipment estimated useful lives (Year)	7 years

Note 1 - Business and Signifi_7

Note 1 - Business and Significant Accounting Policies - Contract Assets (Liabilities) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Contract assets (*)	[1]	$ 16,405	$ 9,692
Contract liabilities (*)	[1]	(8,785)	(9,248)
Recognition of contract liabilities as revenue as a result of performance obligations satisfied		0	3,566
Cash received in advance for which revenues have not yet recognized, net of expenditures made		(2,604)	(2,146)
Reduction of contract assets as a result of rights to consideration becoming unconditional		(23,000)	(43,518)
Contract assets recognized, net of recognized receivables		32,780	29,177
Net change in contract assets and contract liabilities		9,780	(14,341)
Net change in contract assets and contract liabilities		$ (2,604)	$ 1,420
[1]Contract assets and contract liabilities are presented as "Costs and estimated earnings in excess of billings on uncompleted contracts" and "Billings in excess of costs and estimated earnings on uncompleted contracts", respectively, on the consolidated balance sheets. The contract liabilities balance at the beginning of the year was partially recognized as product revenues during the year ended December 31, 2022 as a result of performance obligations that were partially satisfied.

Note 1 - Business and Signifi_8

Note 1 - Business and Significant Accounting Policies - Impact of Adoption (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Electricity [Member]
Revenue		631,727	585,771	541,393
Electricity [Member] | Accounting Standards Update 2016-02 [Member]
Revenue		529,264	502,355	473,260
Electricity and Product Revenue [Member] | Accounting Standards Update 2014-09 [Member]
Revenue		$ 204,895	$ 160,729	$ 232,082
[1]Revenues as reported in the geographic area in which they originate.

Note 1 - Business and Signifi_9

Note 1 - Business and Significant Accounting Policies - Changes in the Allowance for Expected Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Beginning balance of the allowance for expected credit losses	$ 90
Ending balance of the allowance for expected credit losses	90	$ 90
Accounting Standards Update 2016-13 [Member]
Beginning balance of the allowance for expected credit losses	90	597
Change in the provision for expected credit losses for the period	0	(507)
Ending balance of the allowance for expected credit losses	$ 90	$ 90

Note 1 - Business and Signif_10

Note 1 - Business and Significant Accounting Policies - Shares Used to Calculate Earnings Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Weighted average number of shares used in computation of basic earnings per share (in shares)	56,063	56,004	51,567
Additional shares from the assumed exercise of employee stock-based awards (in shares)	440	398	370
Diluted (in shares)	56,503	56,402	51,937

Note 1 - Business and Signif_11

Note 1 - Business and Significant Accounting Policies - Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Redeemable noncontrolling interest as of January 1,	$ 9,329	$ 9,830
Redeemable noncontrolling interest in results of operation of a consolidated subsidiary	638	619
Cash paid to noncontrolling interest	0	(268)
Currency translation adjustments	(377)	(852)
Redeemable noncontrolling interest as of December 31,	$ 9,590	$ 9,329

Note 2 - Business Acquisition_2

Note 2 - Business Acquisitions (Details Textual) - Two Contracted Geothermal Assets in Nevada [Member] - USD ($) $ in Millions			6 Months Ended	12 Months Ended
		Jul. 13, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Payments to Acquire Businesses, Gross		$ 171
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital and Cash and Equivalents		$ 10.8
Business Acquisition, Percentage of Voting Interests Acquired		100%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finance Lease Liability	[1]	$ 258.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	[2]	8.6
Electricity Segment [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			$ 26.2	$ 48
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			5.5	3.3
Business Combination, Pro Forma Information, Tax and Finance Liability Interest Expense of Acquiree since Acquisition Date, Actual			$ 4.9	$ 7.4
Power Purchase Agreement [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		$ 7.8
General and Administrative Expense [Member]
Business Combination, Acquisition Related Costs					$ 4.7
[1]Financing liability is related to a sale and leaseback transaction entered into by the Seller in September 2015 under which it sold and leased back the undivided interests in the Dixie Valley power plant asset through June 2038. The lease transaction was accounted for by the Seller as a finance lease due to the Seller's continued involvement and management of the power plant and the existence of an early buy-out option in September 2024, which continues to be applicable to the Company. As per the accounting guidance, the Company retained the Seller's accounting of a "failed" sale and leaseback transaction and accordingly accounted for the liability as a financing liability. This financing liability, as well as the related power plant asset, were measured at their acquisition-date fair value.[2]The gross amount of receivables due under the Dixie Valley and Beowawe PPAs is $7.8 million. These receivables were fully collected during the third quarter of 2021.

Note 2 - Business Acquisition_3

Note 2 - Business Acquisitions - Fair Value of Amounts of Identified Assets and Liabilities Assumed in a Business Combination (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021	Jul. 13, 2021	Dec. 31, 2020
Goodwill, Ending Balance		$ 90,325	$ 89,954		$ 24,566
Two Contracted Geothermal Assets in Nevada [Member]
Cash and cash equivalents and restricted cash				$ 10,900
Trade receivables and others (1)	[1]			8,600
Deferred income taxes				22,800
Property, plant and equipment and construction-in-process				152,000
Intangible assets (2)	[2]			191,600
Goodwill, Ending Balance	[3]			66,200
Total assets acquired				452,100
Accounts payable, accrued expenses and others				6,600
Financing liability (4)	[4]			258,400
Asset retirement obligation				5,300
Total liabilities assumed				270,300
Total assets acquired, and liabilities assumed, net				$ 181,800
[1]The gross amount of receivables due under the Dixie Valley and Beowawe PPAs is $7.8 million. These receivables were fully collected during the third quarter of 2021.[2]Intangible assets are related to the long-term electricity PPAs described above and are amortized over the term of those PPAs.[3]Goodwill is primarily related to the expected synergies and potential cost savings in operations as a result of the purchase transaction. The goodwill is allocated to the Electricity segment and is deductible for tax purposes pending the exercise of the financial lease buy-out option as described below.[4]Financing liability is related to a sale and leaseback transaction entered into by the Seller in September 2015 under which it sold and leased back the undivided interests in the Dixie Valley power plant asset through June 2038. The lease transaction was accounted for by the Seller as a finance lease due to the Seller's continued involvement and management of the power plant and the existence of an early buy-out option in September 2024, which continues to be applicable to the Company. As per the accounting guidance, the Company retained the Seller's accounting of a "failed" sale and leaseback transaction and accordingly accounted for the liability as a financing liability. This financing liability, as well as the related power plant asset, were measured at their acquisition-date fair value.

Note 2 - Business Acquisition_4

Note 2 - Business Acquisitions - Summary of Pro Forma Information Related to a Business Combination (Details) - Two Contracted Geothermal Assets in Nevada [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition, Pro Forma Revenue	$ 690.6	$ 760.6
Net income attributable to the Company's stockholders	69.6	84.3
Electricity Segment [Member]
Business Acquisition, Pro Forma Revenue	$ 613.3	$ 596.6

Note 3 - Marketable Securitie_2

Note 3 - Marketable Securities (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-Sale, Total	$ 0	$ 43,343
Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale, Total	$ 100	$ 3,700

Note 3 - Marketable Securitie_3

Note 3 - Marketable Securities - Investment in Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Amortized cost	$ 136	$ 46,799
Gross unrealized gains	0	0
Gross unrealized losses	0	(40)
Fair value	136	47,029
Corporate Debt Securities [Member]
Amortized cost	0	32,302
Gross unrealized gains	0	0
Gross unrealized losses	0	(36)
Fair value	0	32,529
Commercial Paper [Member]
Amortized cost	0	8,891
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	0	8,891
Money Market Funds [Member]
Amortized cost	136	3,686
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	136	3,686
Debt Security, Corporate, Non-US [Member]
Amortized cost	0	1,920
Gross unrealized gains	0	0
Gross unrealized losses	0	(4)
Fair value	$ 0	$ 1,923

Note 3 - Marketable Securitie_4

Note 3 - Marketable Securities - Fair Value and Gross Unrealized Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair value, less than 12 months	$ 136	$ 47,029
Gross unrealized loss, less than 12 months	0	(40)
Fair value, greater than 12 months	0	0
Gross unrealized loss, greater than 12 months	0	0
Corporate Debt Securities [Member]
Fair value, less than 12 months	0	32,529
Gross unrealized loss, less than 12 months	0	(36)
Fair value, greater than 12 months	0	0
Gross unrealized loss, greater than 12 months	0	0
Commercial Paper [Member]
Fair value, less than 12 months	0	8,891
Gross unrealized loss, less than 12 months	0	0
Fair value, greater than 12 months	0	0
Gross unrealized loss, greater than 12 months	0	0
Money Market Funds [Member]
Fair value, less than 12 months	136	3,686
Gross unrealized loss, less than 12 months	0	0
Fair value, greater than 12 months	0	0
Gross unrealized loss, greater than 12 months	0	0
Debt Security, Corporate, Non-US [Member]
Fair value, less than 12 months	0	1,923
Gross unrealized loss, less than 12 months	0	(4)
Fair value, greater than 12 months	0	0
Gross unrealized loss, greater than 12 months	$ 0	$ 0

Note 4 - Inventories - Inventor

Note 4 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Raw materials and purchased parts for assembly	$ 10,629	$ 11,539
Self-manufactured assembly parts and finished products	12,203	16,906
Total	$ 22,832	$ 28,445

Note 5 - Cost and Estimated E_3

Note 5 - Cost and Estimated Earnings on Uncompleted Contracts - Cost and Estimated Earnings on Uncompleted Contracts (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Costs and estimated earnings incurred on uncompleted contracts	$ 155,407	$ 103,486
Less billings to date	(147,787)	(103,042)
Total	$ 7,620	$ 444

Note 5 - Cost and Estimated E_4

Note 5 - Cost and Estimated Earnings on Uncompleted Contracts - Cost and Estimated Earnings on Uncompleted Contracts Included in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Costs and estimated earnings in excess of billings on uncompleted contracts	$ 16,405	$ 9,692
Billings in excess of costs and estimated earnings on uncompleted contracts	(8,785)	(9,248)
Total	$ 7,620	$ 444

Note 6 - Investment in Uncons_3

Note 6 - Investment in Unconsolidated Companies (Details Textual) $ in Thousands		12 Months Ended			18 Months Ended
	Jul. 02, 2019 USD ($)	Dec. 31, 2022 USD ($) MWh	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Payments to Acquire Equity Method Investments		$ 4,509	$ 6,401	$ 20,960
Subsidiary of Medco Power [Member] | Ijen Geothermal Project Company [Member]
Ownership Percentage Of Common Shares Outstanding		51%
Ijen Geothermal Project Company [Member]
Equity Method Investment, Ownership Percentage	49%
Payments to Acquire Equity Method Investments	$ 2,700	$ 4,500	6,400	21,000	$ 42,600
Sarulla [Member]
Jointly Owned Utility Plant, Proportionate Ownership Share		12.75%
Expected Power Generating Capacity (Megawatt-Hour) | MWh		330
Number of Phases of Construction		3
Power Utilization (Megawatt-Hour) | MWh		110
Power Plant Usage Agreement Term (Year)		30 years
Payments to Acquire Projects		$ 0	0	$ 0
Accumulated Cash Contributions to Acquire Projects		62,000
Sarulla [Member] | Interest Rate Swap [Member]
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax		$ (2,000)	$ 6,400

Note 6 - Investment in Uncons_4

Note 6 - Investment in Unconsolidated Companies - Unconsolidated Investments Mainly in Power Plants (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Total investment in unconsolidated companies	$ 115,693	$ 105,886
Sarulla [Member]
Total investment in unconsolidated companies	74,881	68,968
Ijen Geothermal Project Company [Member]
Total investment in unconsolidated companies	$ 40,812	$ 36,918

Note 6 - Investment in Uncons_5

Note 6 - Investment in Unconsolidated Companies - Unrealized Gain (Loss) on Derivative Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Interest Rate Swap [Member] | Sarulla [Member]
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment that qualifies as a cash flow hedge	$ 8,370	$ 3,892

Note 7 - Variable Interest En_3

Note 7 - Variable Interest Entities - Assets and Liabilities for the Company's 2015 Variable Interest Entity (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restricted cash and cash equivalents (primarily related to VIEs)		$ 130,804	$ 104,166
Property, plant and equipment, net		2,493,457	2,294,973
Construction-in-process		893,198	721,483
Total assets	[1],[2]	4,611,579	4,425,678	$ 3,888,987
Accounts payable and accrued expenses		149,423	143,186
Long-term debt		2,052,601
Other long-term liabilities		3,317	4,951
Total liabilities		2,581,014	2,417,888
Assets:
Restricted cash and cash equivalents		130,804	104,166	88,526
Property, plant and equipment, net		2,493,457	2,294,973
Construction-in-process		893,198	721,483
Total assets	[1],[2]	4,611,579	4,425,678	$ 3,888,987
Liabilities:
Accounts payable and accrued expenses		149,423	143,186
Long-term debt		2,052,601
Other long-term liabilities		3,317	4,951
Total liabilities		2,581,014	2,417,888
Variable Interest Entity, Primary Beneficiary [Member]
Construction-in-process		360,508	366,924
Assets:
Construction-in-process		360,508	366,924
Variable Interest Entity, Primary Beneficiary [Member] | Project Debt [Member]
Restricted cash and cash equivalents (primarily related to VIEs)		127,972
Other current assets		128,414	122,944
Property, plant and equipment, net		1,516,107	1,300,941
Construction-in-process		104,956	96,764
Other long-term assets		304,766	326,686
Total assets		2,182,215	1,948,699
Accounts payable and accrued expenses		42,577	34,155
Long-term debt		637,080	672,804
Other long-term liabilities		400,271	419,085
Total liabilities		1,079,928	1,126,044
Assets:
Restricted cash and cash equivalents			101,364
Other current assets		128,414	122,944
Property, plant and equipment, net		1,516,107	1,300,941
Construction-in-process		104,956	96,764
Other long-term assets		304,766	326,686
Total assets		2,182,215	1,948,699
Liabilities:
Accounts payable and accrued expenses		42,577	34,155
Long-term debt		637,080	672,804
Other long-term liabilities		400,271	419,085
Total liabilities		1,079,928	1,126,044
Variable Interest Entity, Primary Beneficiary [Member] | Power Purchase Agreement [Member]
Restricted cash and cash equivalents (primarily related to VIEs)		0
Other current assets		29,377	31,781
Property, plant and equipment, net		810,384	858,755
Construction-in-process		255,552	270,160
Other long-term assets		51,037	55,441
Total assets		1,146,350	1,216,137
Accounts payable and accrued expenses		8,552	10,004
Long-term debt		0	2,444
Other long-term liabilities		50,348	49,919
Total liabilities		58,900	62,367
Assets:
Restricted cash and cash equivalents			0
Other current assets		29,377	31,781
Property, plant and equipment, net		810,384	858,755
Construction-in-process		255,552	270,160
Other long-term assets		51,037	55,441
Total assets		1,146,350	1,216,137
Liabilities:
Accounts payable and accrued expenses		8,552	10,004
Long-term debt		0	2,444
Other long-term liabilities		50,348	49,919
Total liabilities		$ 58,900	$ 62,367
[1]Electricity segment assets include goodwill in the amount of $85.3 million, $20.5 million and $20.1 million as of December 31, 2021, 2020 and 2019, respectively, $65.4 million of which was added in the third quarter of 2021 as a result of the Terra-Gen Transaction as further described under Note 2 to the consolidated financial statements. Energy Storage segment assets include goodwill in the amount of $4.6 million, $4.1 million and $0.0 million as of December 31, 2021, 2020 and 2019, respectively. No goodwill is included in the Product segment assets as of December 31, 2021, 2020 and 2019.[2]Including unconsolidated investments

Note 8 - Fair Value of Financ_3

Note 8 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	$ 0
Cross Currency Interest Rate Contract [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	464	$ 817	$ 1,095
Cross Currency Interest Rate Contract [Member] | Prepaid Expenses and Other and Deposits and Other [Member]
Derivatives, Cash Collateral Deposits	$ 0

Note 8 - Fair Value of Financ_4

Note 8 - Fair Value of Financial Instruments - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-Sale, Total		$ 0	$ 43,343
Reported Value Measurement [Member]
Cash equivalents (including restricted cash accounts)		34,832	31,675
Debt Securities, Available-for-Sale, Total		136	47,029
Fair Value, Net Asset (Liability), Total		34,420	116,436
Reported Value Measurement [Member] | Cross Currency Interest Rate Contract [Member]
Derivative Asset, noncurrent	[1]	3,029	37,883
Derivative Liability, Current	[1]	(2,777)
Derivative Assets, current	[1]		1,461
Reported Value Measurement [Member] | Currency Forward Contracts [Member]
Derivative Liability, Current	[2]	(800)
Derivative Assets, current	[2]		813
Reported Value Measurement [Member] | Contingent Payable [Member]
Derivatives, noncurrent	[3]		(2,425)
Estimate of Fair Value Measurement [Member]
Cash equivalents (including restricted cash accounts)		34,832	31,675
Debt Securities, Available-for-Sale, Total		136	47,029
Fair Value, Net Asset (Liability), Total		34,420	116,436
Estimate of Fair Value Measurement [Member] | Cross Currency Interest Rate Contract [Member]
Derivative Asset, noncurrent	[1]	3,029	37,883
Derivative Liability, Current	[1]	(2,777)
Derivative Assets, current	[1]		1,461
Estimate of Fair Value Measurement [Member] | Currency Forward Contracts [Member]
Derivative Liability, Current	[2]	(800)
Derivative Assets, current	[2]		813
Estimate of Fair Value Measurement [Member] | Contingent Payable [Member]
Derivatives, noncurrent	[3]		(2,425)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents (including restricted cash accounts)		34,832	31,675
Debt Securities, Available-for-Sale, Total		136	47,029
Fair Value, Net Asset (Liability), Total		34,968	78,704
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Cross Currency Interest Rate Contract [Member]
Derivative Asset, noncurrent	[1]	0	0
Derivative Liability, Current	[1]	0
Derivative Assets, current	[1]		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Currency Forward Contracts [Member]
Derivative Liability, Current	[2]	0
Derivative Assets, current	[2]		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Contingent Payable [Member]
Derivatives, noncurrent	[3]		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents (including restricted cash accounts)		0	0
Debt Securities, Available-for-Sale, Total		0	0
Fair Value, Net Asset (Liability), Total		(548)	40,157
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Cross Currency Interest Rate Contract [Member]
Derivative Asset, noncurrent	[1]	3,029	37,883
Derivative Liability, Current	[1]	(2,777)
Derivative Assets, current	[1]		1,461
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Currency Forward Contracts [Member]
Derivative Liability, Current	[2]	(800)
Derivative Assets, current	[2]		813
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Contingent Payable [Member]
Derivatives, noncurrent	[3]		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents (including restricted cash accounts)		0	0
Debt Securities, Available-for-Sale, Total		0	0
Fair Value, Net Asset (Liability), Total		0	(2,425)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Cross Currency Interest Rate Contract [Member]
Derivative Asset, noncurrent	[1]	0	0
Derivative Liability, Current	[1]	0
Derivative Assets, current	[1]		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Currency Forward Contracts [Member]
Derivative Liability, Current	[2]	$ 0
Derivative Assets, current	[2]		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Contingent Payable [Member]
Derivatives, noncurrent	[3]		$ (2,425)
[1]These amounts relate to cross currency swap contracts valued primarily based on the present value of the Cross Currency Swap future settlement prices for USD and NIS zero yield curves and the applicable exchange rate as of December 31, 2022. These amounts are included within “Deposits and other” and "Accounts payable and accrued expenses" on December 31, 2022 and within "Prepaid expenses and other" and “Deposits and other” on December 31, 2021 in the consolidated balance sheets. There are no cash collateral deposits on December 31, 2022.[2]These amounts relate to currency forward contracts valued primarily based on observable inputs, including forward and spot prices for currencies, net of contracted rates and then multiplied by notional amounts, and are included within "Receivables, other" and "Accounts payable and accrued expenses" on December 31, 2022 and December 31, 2021, as applicable, in the consolidated balance sheet with the corresponding gain or loss being recognized within "Derivatives and foreign currency transaction gains (losses)" in the consolidated statement of operations and comprehensive income.[3]These amounts relate to contingent payables pertaining to the Guadeloupe power plant purchase transaction, valued primarily based on unobservable inputs and are included within "Other long-term liabilities" on December 31, 2022 and 2021 in the consolidated balance sheets with the corresponding gain or loss being recognized within "Derivatives and foreign currency transaction gains (losses)" in the consolidated statement of operations and comprehensive income.

Note 8 - Fair Value of Financ_5

Note 8 - Fair Value of Financial Instruments - Amounts of Gain (Loss) Recognized in Condensed Consolidated Statements on Derivative Instruments Not Designated as Hedges (Details) - Derivatives and Foreign Currency Transaction Gains (Losses) [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amount of gain (loss) recognized		$ (5,466)	$ (13,172)	$ 5,175
Swap Transaction on RRS Prices [Member]
Amount of gain (loss) recognized		0	(14,540)	0
Currency Forward Contracts [Member]
Amount of gain (loss) recognized	[1]	(5,466)	1,368	5,175
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
Amount of gain (loss) recognized	[2]	$ (36,803)	$ 10,501	$ 21,187
[1]The foregoing currency forward and price swap transactions were not designated as hedge transactions and were marked to market with the corresponding gains or losses recognized within “Derivatives and foreign currency transaction gains (losses)” in the consolidated statements of operations and comprehensive income. The price swap transaction was related to a hedging agreement with a third party that was effective January 1, 2021 under which the Company fixed the price per MWh on a portion of RRS provided by its Rabbit Hill storage facility, as described under Note 1 to the consolidated financial statements. The price swap transaction was terminated effective April 1, 2021.[2]The foregoing cross currency swap transactions were designated as a cash flow hedge as further described under Note 1 to the consolidated financial statements. The changes in the cross currency swap fair value are initially recorded in "Other comprehensive income (loss)" and a corresponding amount is reclassified out of "Accumulated other comprehensive income (loss)" to "Derivatives and foreign currency transaction gains (losses)" to offset the remeasurement of the underlying hedged transaction which also impacts the same line item in the consolidated statements of operations and comprehensive income.

Note 8 - Fair Value of Financ_6

Note 8 - Fair Value of Financial Instruments - Effect of Cash Flow Hedge on Statement of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance in Other comprehensive income (loss) beginning of period		$ 1,998,461	$ 1,941,437	$ 1,515,410
Balance in Other comprehensive income (loss) end of period		2,020,975	1,998,461	1,941,437
Cross Currency Swap [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] | Designated as Hedging Instrument [Member]
Balance in Other comprehensive income (loss) beginning of period		5,745	3,366	0
Gain or (loss) recognized in Other comprehensive income (loss) (1)	[1]	(38,628)	12,880	24,553
Amount reclassified from Other comprehensive income (loss) into earnings		36,803	(10,501)	(21,187)
Balance in Other comprehensive income (loss) end of period		$ 3,920	$ 5,745	$ 3,366
[1]The amount of gain or (loss) recognized in Other comprehensive income (loss) for the years ended December 31, 2022, 2021 and 2020 is net of tax of $0.5 million, $0.8 million and $1.1 million, respectively.

Note 8 - Fair Value of Financ_7

Note 8 - Fair Value of Financial Instruments - Fair Value of Long-term Debt Approximates Its Carrying Amount, Exceptions (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Financing Liability - Dixie Valley	$ 219.8	$ 248.4
Mizrahi Loan Agreement [Member]
Loans	71.4
Convertible Senior Notes [Member]
Notes	505.3
HSBC Loan Agreement [Member]
Loans	40.3	50.4
Hapoalim Loan Agreement [Member]
Loans	91.1	117.8
Discount Loan Agreement [Member]
Loans	81.1	100.2
Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	26.5	34.1
Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	23.3	30.1
Platanares Loan - OPIC [Member]
Loans	80.2	98.2
Amatitlan Loan [Member]
Loans	14.7	19.8
Don A. Campbell 1 ("DAC1") [Member]
Notes	57.4	69.8
USG Prudential - NV [Member]
Notes	23.7	28.9
USG Prudential - ID [Member]
Notes	56.8	17.3
USG DOE [Member]
Notes	32.8	39.9
Senior Unsecured Bonds [Member]
Senior Unsecured debt	235.1	578.9
Senior Unsecured Loan [Member]
Senior Unsecured debt	166.4	204.3
Plumstriker Loan Agreement [Member]
Loans	11.2	14.8
Estimate of Fair Value Measurement [Member]
Financing Liability - Dixie Valley	219.8	248.4
Other long-term debt	9.2	13.3
Estimate of Fair Value Measurement [Member] | Mizrahi Loan Agreement [Member]
Loans	71.4	0
Estimate of Fair Value Measurement [Member] | Convertible Senior Notes [Member]
Notes	505.3	0
Estimate of Fair Value Measurement [Member] | HSBC Loan Agreement [Member]
Loans	40.3	50.4
Estimate of Fair Value Measurement [Member] | Hapoalim Loan Agreement [Member]
Loans	91.1	117.8
Estimate of Fair Value Measurement [Member] | Discount Loan Agreement [Member]
Loans	81.1	100.2
Estimate of Fair Value Measurement [Member] | Olkaria III OPIC [Member]
Loans	134.2	166.5
Estimate of Fair Value Measurement [Member] | Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	26.5	34.1
Estimate of Fair Value Measurement [Member] | Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	23.3	30.1
Estimate of Fair Value Measurement [Member] | Platanares Loan - OPIC [Member]
Loans	80.2	98.2
Estimate of Fair Value Measurement [Member] | Amatitlan Loan [Member]
Loans	14.7	19.8
Estimate of Fair Value Measurement [Member] | OFC 2 LLC ("OFC 2")[Member]
Notes	149.8	183.3
Estimate of Fair Value Measurement [Member] | Don A. Campbell 1 ("DAC1") [Member]
Notes	57.4	69.8
Estimate of Fair Value Measurement [Member] | USG Prudential - NV [Member]
Notes	23.7	28.9
Estimate of Fair Value Measurement [Member] | USG Prudential - ID [Member]
Notes	56.8	17.3
Estimate of Fair Value Measurement [Member] | USG DOE [Member]
Notes	32.8	39.9
Estimate of Fair Value Measurement [Member] | Senior Unsecured Bonds [Member]
Senior Unsecured debt	235.1	578.9
Estimate of Fair Value Measurement [Member] | Senior Unsecured Loan [Member]
Senior Unsecured debt	166.4	204.3
Estimate of Fair Value Measurement [Member] | Plumstriker Loan Agreement [Member]
Loans	11.2	14.8
Reported Value Measurement [Member]
Financing Liability - Dixie Valley	242	252.9
Other long-term debt	10.4	13.6
Reported Value Measurement [Member] | Mizrahi Loan Agreement [Member]
Loans	70.3	0
Reported Value Measurement [Member] | Convertible Senior Notes [Member]
Notes	431.3	0
Reported Value Measurement [Member] | HSBC Loan Agreement [Member]
Loans	42.9	50
Reported Value Measurement [Member] | Hapoalim Loan Agreement [Member]
Loans	98.2	116.1
Reported Value Measurement [Member] | Discount Loan Agreement [Member]
Loans	87.5	100
Reported Value Measurement [Member] | Olkaria III OPIC [Member]
Loans	138.7	156.7
Reported Value Measurement [Member] | Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	27.5	32.5
Reported Value Measurement [Member] | Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	24	28.4
Reported Value Measurement [Member] | Platanares Loan - OPIC [Member]
Loans	79.9	88.1
Reported Value Measurement [Member] | Amatitlan Loan [Member]
Loans	15.8	19.3
Reported Value Measurement [Member] | OFC 2 LLC ("OFC 2")[Member]
Notes	158	173.3
Reported Value Measurement [Member] | Don A. Campbell 1 ("DAC1") [Member]
Notes	62.7	67.9
Reported Value Measurement [Member] | USG Prudential - NV [Member]
Notes	25	26.3
Reported Value Measurement [Member] | USG Prudential - ID [Member]
Notes	61.6	17.3
Reported Value Measurement [Member] | USG DOE [Member]
Notes	32.8	35.5
Reported Value Measurement [Member] | Senior Unsecured Bonds [Member]
Senior Unsecured debt	255.8	539.6
Reported Value Measurement [Member] | Senior Unsecured Loan [Member]
Senior Unsecured debt	174.8	191.6
Reported Value Measurement [Member] | Plumstriker Loan Agreement [Member]
Loans	$ 11.4	$ 14.7

Note 8 - Fair Value of Financ_8

Note 8 - Fair Value of Financial Instruments - Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Financing Liability - Dixie Valley	$ 219.8	$ 248.4
Deposits	13.9	17.1
Mizrahi Loan Agreement [Member]
Loans	71.4
HSBC Loan Agreement [Member]
Loans	40.3	50.4
Convertible Senior Notes [Member]
Notes	505.3
Hapoalim Loan Agreement [Member]
Loans	91.1	117.8
Discount Loan Agreement [Member]
Loans	81.1	100.2
Olkaria III Loan DFC [Member]
Loans	134.2	166.5
Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	26.5	34.1
Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	23.3	30.1
Platanares Loan - OPIC [Member]
Loans	80.2	98.2
Amatitlan Loan [Member]
Loans	14.7	19.8
OFC Senior Secured Notes [Member]
Notes	149.8	183.3
Don A. Campbell 1 ("DAC1") [Member]
Notes	57.4	69.8
USG Prudential - NV [Member]
Notes	23.7	28.9
USG Prudential - ID [Member]
Notes	56.8	17.3
USG DOE [Member]
Notes	32.8	39.9
Senior Unsecured Bonds [Member]
Senior Unsecured debt	235.1	578.9
Senior Unsecured Loan [Member]
Senior Unsecured debt	166.4	204.3
Plumstriker Loan Agreement [Member]
Loans	11.2	14.8
Other Long-term Debt [Member]
Senior Unsecured debt	9.2	13.3
Fair Value, Inputs, Level 1 [Member]
Financing Liability - Dixie Valley	0	0
Deposits	13.9	17.1
Fair Value, Inputs, Level 1 [Member] | Mizrahi Loan Agreement [Member]
Loans	0
Fair Value, Inputs, Level 1 [Member] | HSBC Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Convertible Senior Notes [Member]
Notes	0
Fair Value, Inputs, Level 1 [Member] | Hapoalim Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Discount Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Olkaria III Loan DFC [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Platanares Loan - OPIC [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Amatitlan Loan [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | OFC Senior Secured Notes [Member]
Notes	0	0
Fair Value, Inputs, Level 1 [Member] | Don A. Campbell 1 ("DAC1") [Member]
Notes	0	0
Fair Value, Inputs, Level 1 [Member] | USG Prudential - NV [Member]
Notes	0	0
Fair Value, Inputs, Level 1 [Member] | USG Prudential - ID [Member]
Notes	0	0
Fair Value, Inputs, Level 1 [Member] | USG DOE [Member]
Notes	0	0
Fair Value, Inputs, Level 1 [Member] | Senior Unsecured Bonds [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 1 [Member] | Senior Unsecured Loan [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 1 [Member] | Plumstriker Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 1 [Member] | Other Long-term Debt [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 2 [Member]
Financing Liability - Dixie Valley	0	0
Deposits	0	0
Fair Value, Inputs, Level 2 [Member] | Mizrahi Loan Agreement [Member]
Loans	0
Fair Value, Inputs, Level 2 [Member] | HSBC Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Convertible Senior Notes [Member]
Notes	505.3
Fair Value, Inputs, Level 2 [Member] | Hapoalim Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Discount Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Olkaria III Loan DFC [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Platanares Loan - OPIC [Member]
Loans	0	0
Fair Value, Inputs, Level 2 [Member] | Amatitlan Loan [Member]
Loans	14.7	19.8
Fair Value, Inputs, Level 2 [Member] | OFC Senior Secured Notes [Member]
Notes	0	0
Fair Value, Inputs, Level 2 [Member] | Don A. Campbell 1 ("DAC1") [Member]
Notes	0	0
Fair Value, Inputs, Level 2 [Member] | USG Prudential - NV [Member]
Notes	0	0
Fair Value, Inputs, Level 2 [Member] | USG Prudential - ID [Member]
Notes	0	0
Fair Value, Inputs, Level 2 [Member] | USG DOE [Member]
Notes	0	0
Fair Value, Inputs, Level 2 [Member] | Senior Unsecured Bonds [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 2 [Member] | Senior Unsecured Loan [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 2 [Member] | Plumstriker Loan Agreement [Member]
Loans	11.2	14.8
Fair Value, Inputs, Level 2 [Member] | Other Long-term Debt [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 3 [Member]
Financing Liability - Dixie Valley	219.8	248.4
Deposits	0	0
Fair Value, Inputs, Level 3 [Member] | Mizrahi Loan Agreement [Member]
Loans	71.4
Fair Value, Inputs, Level 3 [Member] | HSBC Loan Agreement [Member]
Loans	40.3	50.4
Fair Value, Inputs, Level 3 [Member] | Convertible Senior Notes [Member]
Notes	0
Fair Value, Inputs, Level 3 [Member] | Hapoalim Loan Agreement [Member]
Loans	91.1	117.8
Fair Value, Inputs, Level 3 [Member] | Discount Loan Agreement [Member]
Loans	81.1	100.2
Fair Value, Inputs, Level 3 [Member] | Olkaria III Loan DFC [Member]
Loans	134.2	166.5
Fair Value, Inputs, Level 3 [Member] | Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	26.5	34.1
Fair Value, Inputs, Level 3 [Member] | Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	23.3	30.1
Fair Value, Inputs, Level 3 [Member] | Platanares Loan - OPIC [Member]
Loans	80.2	98.2
Fair Value, Inputs, Level 3 [Member] | Amatitlan Loan [Member]
Loans	0	0
Fair Value, Inputs, Level 3 [Member] | OFC Senior Secured Notes [Member]
Notes	149.8	183.3
Fair Value, Inputs, Level 3 [Member] | Don A. Campbell 1 ("DAC1") [Member]
Notes	57.4	69.8
Fair Value, Inputs, Level 3 [Member] | USG Prudential - NV [Member]
Notes	23.7	28.9
Fair Value, Inputs, Level 3 [Member] | USG Prudential - ID [Member]
Notes	56.8	17.3
Fair Value, Inputs, Level 3 [Member] | USG DOE [Member]
Notes	32.8	39.9
Fair Value, Inputs, Level 3 [Member] | Senior Unsecured Bonds [Member]
Senior Unsecured debt	235.1	578.9
Fair Value, Inputs, Level 3 [Member] | Senior Unsecured Loan [Member]
Senior Unsecured debt	166.4	204.3
Fair Value, Inputs, Level 3 [Member] | Plumstriker Loan Agreement [Member]
Loans	0	0
Fair Value, Inputs, Level 3 [Member] | Other Long-term Debt [Member]
Senior Unsecured debt	$ 9.2	$ 13.3

Note 9 - Property, Plant and _3

Note 9 - Property, Plant and Equipment and Construction-in-process (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Depreciation, Total	$ 163,200	$ 153,000	$ 133,500
Depreciation Net Of Amortization Of Cash Grant	7,500	7,400	7,300
Property, Plant and Equipment Including Construction In Progress, Net	2,830,300	2,502,200
Property, Plant and Equipment, Cash Grant, Net	144,400	151,900
Impairment, Long-Lived Asset, Held-for-Use, Total	32,648	0	$ 0
Geotermica Platanares [Member]
Property, Plant and Equipment Including Construction In Progress, Net	$ 79,500	75,400
Power Plant Usage Agreement Term (Year)	15 years
Geothermie Bouillante SA (“GB”) [Member]
Property, Plant and Equipment Including Construction In Progress, Net	$ 43,500	39,400
North Brawley Geothermal Power Plant [Member]
Property, Plant, and Equipment, Fair Value Disclosure	13,600
Impairment, Long-Lived Asset, Held-for-Use, Total	$ 30,500
Weighted Average Cost Of Capital	9%
Orzunil I de Electricidad, Limitada [Member]
Property, Plant and Equipment Including Construction In Progress, Net	$ 27,100	17,200
Ortitlan Limitada [Member]
Property, Plant and Equipment Including Construction In Progress, Net	$ 42,300	39,800
Orzunil I de Electricidad, Limitada [Member]
Noncontrolling Interest, Ownership Percentage by Parent	97%
Kenya Power and Lighting Co Limited [Member]
Power Purchase Agreements Term (Year)	20 years
EDF [Member] | Geothermie Bouillante SA (“GB”) [Member]
Power Purchase Agreements Term (Year)	15 years
Foreign Countries [Member]
Property, Plant and Equipment Including Construction In Progress, Net	$ 556,400	514,300
KENYA | Power Plants [Member]
Property, Plant and Equipment Including Construction In Progress, Net	$ 301,500	$ 297,400

Note 9 - Property, Plant and _4

Note 9 - Property, Plant and Equipment and Construction-in-process - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, plant and equipment	$ 4,183,029	$ 3,843,005
Asset retirement cost	48,578	41,157
Less accumulated depreciation	(1,689,572)	(1,548,032)
Property, plant and equipment, net	2,493,457	2,294,973
Land [Member]
Property, plant and equipment	42,335	40,545
Leasehold Improvements [Member]
Property, plant and equipment	13,230	9,105
Machinery and Equipment [Member]
Property, plant and equipment	350,584	302,367
Office Equipment [Member]
Property, plant and equipment	52,222	48,275
Vehicles [Member]
Property, plant and equipment	14,115	10,724
Energy Equipment [Member]
Property, plant and equipment	91,025	79,805
Solar Facility Equipment [Member]
Property, plant and equipment	32,003	0
Geothermal And Recovered Energy Generation Power Plants [Member] | UNITED STATES
Property, plant and equipment	2,641,280	2,511,027
Geothermal And Recovered Energy Generation Power Plants [Member] | Foreign Countries [Member]
Property, plant and equipment	$ 897,657	$ 800,000

Note 9 - Property, Plant and _5

Note 9 - Property, Plant and Equipment and Construction-in-process - Construction-in-process (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Construction in progress	$ 893,198	$ 721,483
Projects Under Exploration and Development [Member]
Construction in progress	95,268	50,702	$ 51,528	$ 84,637
Projects Under Exploration and Development [Member] | Up-front Bonus Lease Costs [Member]
Construction in progress	5,335	5,335	5,347	17,018
Projects Under Exploration and Development [Member] | Exploration and Development Costs [Member]
Construction in progress	89,230	44,664	45,478	66,916
Projects Under Exploration and Development [Member] | Interest Capitalized [Member]
Construction in progress	703	703	$ 703	$ 703
Projects Under Construction [Member]
Construction in progress	797,930	670,781
Projects Under Construction [Member] | Up-front Bonus Lease Costs [Member]
Construction in progress	11,156	39,156
Projects Under Construction [Member] | Interest Capitalized [Member]
Construction in progress	25,645	20,072
Projects Under Construction [Member] | Drilling And Construction Costs [Member]
Construction in progress	$ 761,129	$ 611,553

Note 9 - Property, Plant and _6

Note 9 - Property, Plant and Equipment and Construction-in-process - Activity in Construction and Development (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance	$ 721,483
Balance	893,198	$ 721,483
Projects Under Exploration and Development [Member]
Balance	50,702	51,528	$ 84,637
Cost incurred during the year	44,566	2,680	5,832
Transfer of projects under exploration and development to projects under construction		(3,506)	(38,941)
Balance	95,268	50,702	51,528
Projects Under Exploration and Development [Member] | Up-front Bonus Lease Costs [Member]
Balance	5,335	5,347	17,018
Cost incurred during the year	0	0	0
Transfer of projects under exploration and development to projects under construction		(12)	(11,671)
Balance	5,335	5,335	5,347
Projects Under Exploration and Development [Member] | Exploration and Development Costs [Member]
Balance	44,664	45,478	66,916
Cost incurred during the year	44,566	2,680	5,832
Transfer of projects under exploration and development to projects under construction		(3,494)	(27,270)
Balance	89,230	44,664	45,478
Projects Under Exploration and Development [Member] | Interest Capitalized [Member]
Balance	703	703	703
Cost incurred during the year	0	0	0
Transfer of projects under exploration and development to projects under construction		0	0
Balance	703	703	703
Construction in Progress [Member]
Balance	670,781	427,787	291,918
Cost incurred during the year	495,526	413,842	301,780
Transfer of projects under exploration and development to projects under construction		3,506	38,941
Balance	797,930	670,781	427,787
Transfer of completed projects to property, plant and equipment	(368,377)	(174,354)	(204,852)
Construction in Progress [Member] | Up-front Bonus Lease Costs [Member]
Balance	39,156	39,144	27,473
Cost incurred during the year	0	0	0
Transfer of projects under exploration and development to projects under construction		12	11,671
Balance	11,156	39,156	39,144
Transfer of completed projects to property, plant and equipment	(28,000)	0	0
Construction in Progress [Member] | Drilling And Construction Costs [Member]
Balance	611,553	379,117	258,484
Cost incurred during the year	489,953	403,296	298,215
Transfer of projects under exploration and development to projects under construction		3,494	27,270
Balance	761,129	611,553	379,117
Transfer of completed projects to property, plant and equipment	(340,377)	(174,354)	(204,852)
Construction in Progress [Member] | Interest Capitalized [Member]
Balance	20,072	9,526	5,961
Cost incurred during the year	5,573	10,546	3,565
Transfer of projects under exploration and development to projects under construction		0	0
Balance	25,645	20,072	9,526
Transfer of completed projects to property, plant and equipment	$ 0	$ 0	$ 0

Note 9 - Property, Plant and _7

Note 9 - Property, Plant and Equipment and Construction-in-process - Significant Unobservable Inputs (Details) - North Brawley Geothermal Power Plant [Member]	Dec. 31, 2022 USD ($)
Average generation capacity (MW)	7
Electricity price escalation (%)	2.20%
Cost long-term growth rate	2.2
Average realized electricity price ($/MW)	$ 92.2

Note 10 - Intangible Assets a_3

Note 10 - Intangible Assets and Goodwill (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets, Net, Ending Balance	$ 333,845
Finite-Lived Intangible Assets, Accumulated Amortization	122,805	$ 110,138
Amortization of Intangible Assets	27,200	21,700	$ 14,400
Increase (Decrease) in Intangible Assets, Current	0	192,500	20,400
Finite Lived Intangible Assets, Write off	900	0	0
Goodwill, Ending Balance	90,325	89,954	24,566
Goodwill, Impairment Loss	0	0	$ 0
Power Purchase Agreements and Intangible Assets Related to Storage Activities [Member]
Finite-Lived Intangible Assets, Net, Ending Balance	333,800	363,300
Finite-Lived Intangible Assets, Accumulated Amortization	$ 122,800	$ 110,100

Note 10 - Intangible Assets a_4

Note 10 - Intangible Assets and Goodwill - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-lived intangible asset, gross	$ 456,650	$ 473,452
Finite-lived intangible asset, accumulated amortization	(122,805)	(110,138)
Intangible Assets in Electricity Segment [Member]
Finite-lived intangible asset, gross	402,340	417,479
Finite-lived intangible asset, accumulated amortization	(104,601)	(96,250)
Intangible Assets in Storage Segment [Member]
Finite-lived intangible asset, gross	54,310	55,973
Finite-lived intangible asset, accumulated amortization	$ (18,204)	$ (13,888)

Note 10 - Intangible Assets a_5

Note 10 - Intangible Assets and Goodwill - Estimated Future Amortization Expense (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 27,191
2024	26,229
2025	25,911
2026	24,056
2027	22,176
Thereafter	208,282
Total	$ 333,845

Note 10 - Intangible Assets a_6

Note 10 - Intangible Assets and Goodwill - Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Goodwill		$ 89,954	$ 24,566
Goodwill acquired (1)	[1]	0	65,441
Translation differences		371	(53)
Goodwill		$ 90,325	$ 89,954
[1]Goodwill acquired in 2021 is related to the purchase of geothermal assets from TG Geothermal Portfolio, LLC and the Pomona storage facility purchase transaction, respectively, as further described in Note 2 to the consolidated financial statements.

Note 11 - Accounts Payable an_3

Note 11 - Accounts Payable and Accrued Expenses - Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Trade payable	$ 77,551	$ 75,164
Salaries and other payroll costs	24,205	25,513
Customer advances	1,060	1,218
Accrued interest	14,063	11,283
Income tax payable	8,393	8,138
Property tax payable	3,271	2,906
Scheduling and transmission	1,000	3,632
Royalty accrual	9,825	6,023
Warranty accrual	1,705	1,579
Other	8,350	7,730
Total	$ 149,423	$ 143,186

Note 12 - Long-term Debt, Cre_3

Note 12 - Long-term Debt, Credit Agreements and Finance Liability (Details Textual) $ in Thousands, ₪ in Billions

1 Months Ended

12 Months Ended

Nov. 28, 2022 USD ($)

Jun. 27, 2022 USD ($)

Apr. 12, 2022 USD ($)

Sep. 02, 2021 USD ($)

Jul. 15, 2021 USD ($)

Jul. 12, 2021 USD ($)

Jul. 20, 2020 USD ($)

May 30, 2019

Apr. 09, 2019 USD ($)

Mar. 25, 2019 USD ($)

Mar. 22, 2018 USD ($)

Dec. 21, 2016 USD ($)

Jul. 31, 2015 USD ($) MWh

Feb. 29, 2012

Oct. 31, 2018 MWh

May 31, 2013

Dec. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

Dec. 31, 2020 USD ($)

Jan. 28, 2022

Jul. 13, 2021 USD ($)

Jul. 01, 2020 USD ($)

Jul. 01, 2020 ILS (₪)

Apr. 30, 2020 USD ($)

Dec. 31, 2019 USD ($)

May 04, 2019 USD ($)

Apr. 29, 2019

Apr. 04, 2019 USD ($)

Jan. 04, 2019 USD ($)

Apr. 30, 2018 USD ($)

May 31, 2017 USD ($)

Nov. 29, 2016 USD ($)

Oct. 20, 2016 USD ($)

May 31, 2016 USD ($)

Aug. 29, 2014 USD ($)

Aug. 23, 2012 USD ($)

Oct. 31, 2011 USD ($)

Sep. 30, 2011 USD ($)

Aug. 31, 2011 USD ($)

Long-Term Debt, Total

$ 2,052,601

Letters of Credit Outstanding, Amount

$ 197,400

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

4.13

Stockholders' Equity Attributable to Parent, Ending Balance

$ 1,867,571

$ 1,854,999

Percentage Of Company Assets

43.80%

Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance

$ 2,020,975

1,998,461

$ 1,941,437

$ 1,515,410

Payments of Dividends, Total

27,100

$ 27,000

$ 22,500

Covenant Requirement Minimum [Member]

Stockholders' Equity Attributable to Parent, Ending Balance

$ 750,000

Percentage Of Company Assets

25%

Maximum [Member] | Covenant Requirement Minimum [Member]

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

6

Pomona Energy Storage [Member]

Business Combination, Consideration Transferred, Total

$ 43,400

Two Contracted Geothermal Assets in Nevada [Member]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finance Lease Liability

[1]

$ 258,400

Mizrahi Loan Agreement [Member]

Debt Instrument, Face Amount

$ 75,000

$ 75,000

Debt Instrument, Number of Semi-annual Payments

16

Debt Instrument, Periodic Payment, Total

$ 4,700

Debt Instrument, Term (Year)

8 years

Debt Instrument, Covenant, Maximum Debt to EBITDA Ratio

6

Debt Instrument, Covenant, Minimum Equity Capital, Amount

$ 750,000

Debt Instrument, Covenant, Equity Capital to Total Assets, Percent

25%

Debt Instrument, Interest Rate, Stated Percentage

[2]

4.10%

Long-Term Debt, Gross

$ 70,300

Hapoalim Loan Agreement [Member] | Bank Hapoalim B.M. [Member]

Debt Instrument, Face Amount

$ 125,000

Debt Instrument, Number of Semi-annual Payments

14

Debt Instrument, Periodic Payment, Total

$ 8,900

Debt Instrument, Term (Year)

7 years

Debt Instrument, Covenant, Maximum Debt to EBITDA Ratio

6

Debt Instrument, Covenant, Minimum Equity Capital, Amount

$ 750,000

Debt Instrument, Covenant, Equity Capital to Total Assets, Percent

25%

HSBC Loan Agreement [Member] | HSBC Bank PLC [Member]

Debt Instrument, Face Amount

$ 50,000

Debt Instrument, Number of Semi-annual Payments

14

Debt Instrument, Periodic Payment, Total

$ 3,600

Debt Instrument, Term (Year)

7 years

Debt Instrument, Covenant, Maximum Debt to EBITDA Ratio

6

Debt Instrument, Covenant, Minimum Equity Capital, Amount

$ 750,000

Debt Instrument, Covenant, Equity Capital to Total Assets, Percent

25%

Discount Loan Agreement [Member]

Debt Instrument, Face Amount

$ 100,000

Debt Instrument, Interest Rate, Stated Percentage

[2]

2.90%

Long-Term Debt, Gross

$ 87,500

Discount Loan Agreement [Member] | Israel Discount Bank Ltd. [Member]

Debt Instrument, Face Amount

$ 100,000

Debt Instrument, Number of Semi-annual Payments

16

Debt Instrument, Periodic Payment, Total

$ 6,250

Debt Instrument, Term (Year)

8 years

Debt Instrument, Covenant, Maximum Debt to EBITDA Ratio

6

Debt Instrument, Covenant, Minimum Equity Capital, Amount

$ 750,000

Debt Instrument, Covenant, Equity Capital to Total Assets, Percent

25%

Senior Unsecured Bonds, Series 4 [Member]

Debt Instrument, Face Amount

$ 289,800

$ 289,800

₪ 1

Debt Instrument, Number of Annual Payments

10

10

Debt Instrument, Interest Rate, Stated Percentage

[2]

3.35%

Long-Term Debt, Gross

$ 255,800

Senior Unsecured Bonds, Series 4 [Member] | Cross Currency Interest Rate Contract [Member]

Derivative, Fixed Interest Rate

4.34%

4.34%

Senior Unsecured Bonds, Series 3 [Member]

Repayments of Long-Term Debt, Total

$ 221,900

Extinguishment of Debt, Amount

218,000

Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total

2,800

Debt Instrument, Unamortized Premium, Total

$ 1,100

Senior Unsecured Loan (Migdal) [Member]

Debt Instrument, Face Amount

$ 100,000

$ 100,000

Debt Instrument, Periodic Payment, Total

4,200

Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid

$ 37,000

Debt Instrument Increase in Stated Interest Rate if Rating is Downgraded to ILA Negative

0.50%

Debt Instrument Increase in Stated Interest Rate Each Additional Downgrade

0.25%

Debt Instrument Decrease in Stated Interest Rate for Each Rating Upgrade

0.25%

Debt Instrument, Interest Rate, Stated Percentage

[3]

4.80%

Debt to EBITDA Ratio Threshold for Rate Increase

4.5

Debt Instrument Increase in Stated Interest Rate if Debt to EBITDA Ratio Exceeds Threshold

0.50%

Debt to EBITDA Ratio Requirement

6

Stockholders Equity, Debt Covenant, Minimum Threshold

$ 750,000

Stockholders Equity to Total Assets, Ratio

25%

Long-Term Debt, Gross

$ 87,400

Senior Unsecured Loan (Migdal) [Member] | Maximum [Member]

Debt Instrument, Increase in Stated Interest Rate

1%

Senior Unsecured Loan (Migdal) [Member] | Minimum [Member]

Debt Instrument, Interest Rate, Stated Percentage

4.80%

Additional Migdal Loan [Member]

Debt Instrument, Face Amount

$ 50,000

$ 50,000

Debt Instrument, Number of Semi-annual Payments

15

Debt Instrument, Periodic Payment, Total

$ 2,100

Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid

$ 18,500

Debt Instrument, Interest Rate, Stated Percentage

[3]

4.60%

Long-Term Debt, Gross

$ 43,700

Second Addendum Migdal Loan [Member]

Debt Instrument, Face Amount

$ 50,000

$ 50,000

Debt Instrument, Number of Semi-annual Payments

15

Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid

$ 18,500

Debt Instrument, Interest Rate, Stated Percentage

[3]

5.44%

Debt Instrument, Principal to Be Repaid in Installments

$ 31,500

Long-Term Debt, Gross

$ 43,700

DEG 2 Facility Agreement [Member]

Debt Instrument, Interest Rate, Stated Percentage

6.28%

Line of Credit Facility, Maximum Borrowing Capacity

$ 50,000

Proceeds from Lines of Credit, Total

$ 50,000

DEG 3 Loan Agreement [Member]

Debt Instrument, Number of Semi-annual Payments

19

Debt Instrument, Interest Rate, Stated Percentage

6.04%

DEG 3 Loan Agreement [Member] | OrPower 4, Inc [Member]

Debt Instrument, Face Amount

$ 41,500

Loan Agreement With OPIC the Olkaria III Power Plant [Member]

Debt Instrument, Face Amount

310,000

$ 310,000

Long-Term Debt, Gross

138,700

Platanares Finance Agreement [Member]

Debt Instrument, Face Amount

$ 114,700

Debt Instrument, Interest Rate, Stated Percentage

[4]

7.02%

Long-Term Debt, Gross

$ 79,900

Platanares Finance Agreement [Member] | OPIC [Member]

Debt Instrument, Face Amount

$ 114,700

Current Power Generation (Megawatt-Hour) | MWh

35

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member]

Debt Instrument, Face Amount

$ 42,000

42,000

Debt Instrument, Term (Year)

12 years

Power Utilization (Megawatt-Hour) | MWh

20

Debt Instrument Number of Quarterly Payments

48

Long-Term Debt, Gross

$ 15,800

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument, Basis Spread on Variable Rate

[4]

4.35%

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Guaranteed [Member]

Debt Instrument, Basis Spread on Variable Rate

4.35%

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Not Guaranteed [Member]

Debt Instrument, Basis Spread on Variable Rate

4.75%

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument, Basis Spread on Variable Rate

1.25%

Plumstriker Loan Agreement [Member]

Debt Instrument, Face Amount

$ 23,500

Long-Term Debt, Gross

$ 11,400

Plumstriker Loan Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument, Basis Spread on Variable Rate

[4]

3.50%

Plumstriker Loan Agreement [Member] | Plumstriker and its Two Subsidiaries [Member]

Debt Instrument, Face Amount

$ 23,500

Debt Instrument, Equal Quarterly Principal Installments, Percentage of Loan

1.25%

Plumstriker Loan Agreement [Member] | Plumstriker and its Two Subsidiaries [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument, Basis Spread on Variable Rate

3.50%

Don A. Cambell Senior Secured Notes [Member]

Debt Instrument, Face Amount

$ 92,500

OFC Two Senior Secured Notes [Member]

Debt Instrument, Face Amount

$ 151,700

$ 350,000

Government Guarantee Percent

80%

OFC Two Senior Secured Notes [Member] | Wholly Owned Subsidiaries With Project Debt [Member]

Debt Instrument, Face Amount

$ 140,000

Prudential Capital Group Agreement [Member]

Debt Instrument, Face Amount

$ 20,000

Idaho Refinancing Note [Member]

Debt Instrument, Face Amount

$ 61,600

Debt Instrument, Number of Semi-annual Payments

31

Debt Instrument, Interest Rate, Stated Percentage

6.26%

Idaho Refinancing Note [Member] | Raft River Energy I LLC [Member]

Debt Instrument, Secured, Percentage of Ownership Interests

100%

Idaho Refinancing Note [Member] | Oregon USG Holdings, LLC [Member]

Debt Instrument, Secured, Percentage of Ownership Interests

60%

Idaho Refinancing Note [Member] | Revolving Note Tranche [Member]

Line of Credit Facility, Maximum Borrowing Capacity

$ 4,300

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

0.50%

Idaho Refinancing Note [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Revolving Note Tranche [Member]

Debt Instrument, Basis Spread on Variable Rate

1.40%

USG Prudential - ID [Member]

Long-Term Debt, Total

$ 16,000

DOE Loan Guarantee [Member]

Line of Credit Facility, Maximum Borrowing Capacity

$ 96,800

Loan Agreement with Bpifrance [Member] | Guadeloupe 1 [Member]

Debt Instrument, Face Amount

$ 8,900

Debt Instrument, Interest Rate, Stated Percentage

1.93%

Long-Term Debt, Gross

$ 5,800

Loan Agreement with Société Général [Member] | Guadeloupe 1 [Member]

Debt Instrument, Face Amount

$ 8,900

Debt Instrument, Interest Rate, Stated Percentage

1.52%

Debt Instrument Number of Quarterly Payments

28

Long-Term Debt, Gross

4,600

Credit Agreements With Eight Commercial Banks [Member]

Line of Credit Facility, Maximum Borrowing Capacity

623,000

Long-term Line of Credit, Total

0

Letters of Credit Outstanding, Amount

90,700

Credit Agreements With Eight Commercial Banks [Member] | Extensions of Credit in The Form of Loans and/or Letters of Credit [Member]

Line of Credit Facility, Maximum Borrowing Capacity

408,000

Credit Agreements With Eight Commercial Banks [Member] | Letter of Credit [Member]

Line of Credit Facility, Maximum Borrowing Capacity

120,000

Credit Agreements With Eight Commercial Banks [Member] | Union Bank, N.A. [Member]

Line of Credit Facility, Maximum Borrowing Capacity

60,000

Credit Agreements With Eight Commercial Banks [Member] | HSBC Bank USA, N.A. [Member]

Line of Credit Facility, Maximum Borrowing Capacity

35,000

Long-Term Debt, Gross

528,000

Union Bank, N.A. [Member]

Line of Credit Facility, Maximum Borrowing Capacity

60,000

Long-term Line of Credit, Total

$ 57,600

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

2.04

Debt Services, Coverage Ratio

3.91

Amount Available For Dividend Distribution Percent Of Cumulative Net Income

2

0.63

Union Bank, N.A. [Member] | Maximum [Member]

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

4.5

Union Bank, N.A. [Member] | Minimum [Member]

Debt Services, Coverage Ratio

1.35

HSBC Bank USA, N.A. [Member]

Line of Credit Facility, Maximum Borrowing Capacity

$ 35,000

Long-term Line of Credit, Total

$ 34,200

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

2.04

Debt Services, Coverage Ratio

3.91

Amount Available For Dividend Distribution Percent Of Cumulative Net Income

0.63

Uncommitted Line of Credit Facility, Maximum Borrowing Capacity

$ 20,000

Uncommitted Long-term Line of Credit

4,800

HSBC Bank USA, N.A. [Member] | Maximum [Member]

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

4.5

Amount Available For Dividend Distribution Percent Of Cumulative Net Income

2

HSBC Bank USA, N.A. [Member] | Minimum [Member]

Debt To Earnings Before Interest Tax Depreciation And Amortization Ratio

1.35

Surety Agreement [Member] | Chubb [Member]

Surety Bonds Available

$ 200,000

Surety Bonds Outstanding

$ 192,400

[1]Financing liability is related to a sale and leaseback transaction entered into by the Seller in September 2015 under which it sold and leased back the undivided interests in the Dixie Valley power plant asset through June 2038. The lease transaction was accounted for by the Seller as a finance lease due to the Seller's continued involvement and management of the power plant and the existence of an early buy-out option in September 2024, which continues to be applicable to the Company. As per the accounting guidance, the Company retained the Seller's accounting of a "failed" sale and leaseback transaction and accordingly accounted for the liability as a financing liability. This financing liability, as well as the related power plant asset, were measured at their acquisition-date fair value.[2]payable semi-annually[3]payable semi-annually in arrears.[4]payable quarterly

Note 12 - Long-term Debt, Cre_4

Note 12 - Long-term Debt, Credit Agreements and Finance Liability - Long-term Debt (Details) $ in Thousands, ₪ in Billions

12 Months Ended

Dec. 31, 2022 USD ($)

Nov. 28, 2022 USD ($)

Apr. 12, 2022 USD ($)

Dec. 31, 2021 USD ($)

Jul. 01, 2020 USD ($)

Jul. 01, 2020 ILS (₪)

Apr. 30, 2020 USD ($)

Mar. 25, 2019 USD ($)

Mar. 22, 2018 USD ($)

Jul. 31, 2015 USD ($)

Aug. 23, 2012 USD ($)

Financing liability

[1]

$ 242,029

$ 252,864

Less current portion

[1]

(16,270)

(10,835)

Noncurrent portion

[1]

225,759

242,029

Nonrecourse Debt [Member]

Long-Term Debt, Gross

119,400

Amount Issued

189,100

Amount Outstanding

119,400

Nonrecourse [Member]

Long-Term Debt, Gross

[1]

596,201

612,657

Less current portion

[1]

(64,044)

(61,695)

Noncurrent portion

[1]

532,157

550,962

Amount Outstanding

[1]

596,201

612,657

Recourse [Member]

Long-Term Debt, Gross

[1]

780,966

1,058,134

Less current portion

[1]

(101,460)

(313,846)

Noncurrent portion

[1]

679,506

744,288

Amount Outstanding

[1]

780,966

1,058,134

Loan Agreement With OPIC the Olkaria III Power Plant [Member]

Long-Term Debt, Gross

138,700

Amount Issued

310,000

$ 310,000

Amount Outstanding

138,700

Loan Agreement With OPIC the Olkaria III Power Plant [Member] | Tranche One [Member]

Long-Term Debt, Gross

37,800

Amount Issued

85,000

Amount Outstanding

$ 37,800

Annual Interest Rate

[2]

6.34%

Loan Agreement With OPIC the Olkaria III Power Plant [Member] | Tranche Two [Member]

Long-Term Debt, Gross

$ 79,400

Amount Issued

180,000

Amount Outstanding

$ 79,400

Annual Interest Rate

[2]

6.29%

Loan Agreement With OPIC the Olkaria III Power Plant [Member] | Tranche Three [Member]

Long-Term Debt, Gross

$ 21,500

Amount Issued

45,000

Amount Outstanding

$ 21,500

Annual Interest Rate

[2]

6.12%

Loan Agreement With OPIC the Olkaria III Power Plant [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

$ 138,663

156,657

Amount Outstanding

[1]

138,663

156,657

Mizrahi Loan Agreement [Member]

Long-Term Debt, Gross

70,300

Amount Issued

75,000

$ 75,000

Amount Outstanding

$ 70,300

Annual Interest Rate

[3]

4.10%

Hapoalim Loan [Member]

Long-Term Debt, Gross

$ 98,200

Amount Issued

125,000

Amount Outstanding

$ 98,200

Annual Interest Rate

[3]

3.45%

HSBC Loan [Member]

Long-Term Debt, Gross

$ 42,900

Amount Issued

50,000

Amount Outstanding

$ 42,900

Annual Interest Rate

[3]

3.45%

Discount Loan Agreement [Member]

Long-Term Debt, Gross

$ 87,500

Amount Issued

100,000

Amount Outstanding

$ 87,500

Annual Interest Rate

[3]

2.90%

Senior Unsecured Bonds, Series 4 [Member]

Long-Term Debt, Gross

$ 255,800

Amount Issued

289,800

$ 289,800

₪ 1

Amount Outstanding

$ 255,800

Annual Interest Rate

[3]

3.35%

Senior Unsecured Loan (Migdal) [Member]

Long-Term Debt, Gross

$ 87,400

Amount Issued

100,000

$ 100,000

Amount Outstanding

$ 87,400

Annual Interest Rate

[4]

4.80%

Maturity Date

Mar. 31, 2029

Senior Unsecured Loan (Migdal) [Member] | Recourse [Member]

Long-Term Debt, Gross

[1]

$ 174,800

191,600

Amount Outstanding

[1]

174,800

191,600

Olkaria IV Loan - DEG 2 [Member]

Long-Term Debt, Gross

27,500

Amount Issued

50,000

Amount Outstanding

$ 27,500

Annual Interest Rate

[3]

6.28%

Maturity Date

Jun. 30, 2028

Platanares Finance Agreement [Member]

Long-Term Debt, Gross

$ 79,900

Amount Issued

114,700

Amount Outstanding

$ 79,900

Annual Interest Rate

[2]

7.02%

Maturity Date

Sep. 30, 2032

Platanares Finance Agreement [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

$ 79,880

88,073

Amount Outstanding

[1]

79,880

88,073

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member]

Long-Term Debt, Gross

15,800

Amount Issued

42,000

$ 42,000

Amount Outstanding

$ 15,800

Maturity Date

Jun. 30, 2027

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited1 [Member] | London Interbank Offered Rate (LIBOR) [Member]

Annual Interest Rate, Variable

[2]

4.35%

Plumstriker Loan Agreement [Member]

Long-Term Debt, Gross

$ 11,400

Amount Issued

23,500

Amount Outstanding

$ 11,400

Maturity Date

May 31, 2026

Plumstriker Loan Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]

Annual Interest Rate, Variable

[2]

3.50%

Plumstriker Loan Agreement [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

$ 11,392

14,726

Amount Outstanding

[1]

11,392

14,726

Don A. Campbell 1 ("DAC1") [Member]

Long-Term Debt, Gross

62,700

Amount Issued

92,500

Amount Outstanding

$ 62,700

Annual Interest Rate

[2]

4.03%

Maturity Date

Sep. 30, 2033

Don A. Campbell 1 ("DAC1") [Member] | Nonrecourse [Member]

Long-Term Debt, Gross

[1]

$ 62,698

67,939

Amount Outstanding

[1]

62,698

67,939

Ormat Funding Corp [Member]

Long-Term Debt, Gross

158,100

Amount Issued

291,700

Amount Outstanding

158,100

Ormat Funding Corp [Member] | Series A Senior Notes [Member]

Long-Term Debt, Gross

71,800

Amount Issued

151,700

Amount Outstanding

$ 71,800

Annual Interest Rate

[5]

4.69%

Maturity Date

Dec. 31, 2032

Ormat Funding Corp [Member] | Series C Senior Notes [Member]

Long-Term Debt, Gross

$ 86,300

Amount Issued

140,000

Amount Outstanding

$ 86,300

Annual Interest Rate

[5]

4.61%

Maturity Date

Dec. 31, 2032

Ormat Funding Corp [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

$ 158,036

173,321

Amount Outstanding

[1]

158,036

173,321

Idaho Refinancing Note [Member]

Amount Issued

$ 61,600

Annual Interest Rate

6.26%

Idaho Refinancing Note [Member] | Nonrecourse Debt [Member]

Long-Term Debt, Gross

61,600

Amount Issued

61,600

Amount Outstanding

$ 61,600

Annual Interest Rate

[6]

6.26%

Maturity Date

Mar. 31, 2038

Finance Liability [Member]

Long-Term Debt, Gross

$ 242,000

Amount Outstanding

$ 242,000

Annual Interest Rate

[3]

2.55%

Additional Migdal Loan [Member]

Long-Term Debt, Gross

$ 43,700

Amount Issued

50,000

$ 50,000

Amount Outstanding

$ 43,700

Annual Interest Rate

[4]

4.60%

Maturity Date

Mar. 31, 2029

Olkaria IV Loan - DEG 3 [Member]

Long-Term Debt, Gross

$ 24,000

Amount Issued

41,500

Amount Outstanding

$ 24,000

Annual Interest Rate

[3]

6.04%

Maturity Date

Jun. 30, 2028

DOE Loan Guarantee [Member] | Nonrecourse Debt [Member]

Long-Term Debt, Gross

$ 32,800

Amount Issued

96,800

Amount Outstanding

$ 32,800

Annual Interest Rate

[6]

2.60%

Maturity Date

Feb. 28, 2035

Loan Agreement with Banco Industrial S.A. and Westrust Bank (International) Limited [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

$ 15,750

19,250

Amount Outstanding

[1]

15,750

19,250

Second Addendum Migdal Loan [Member]

Long-Term Debt, Gross

43,700

Amount Issued

50,000

$ 50,000

Amount Outstanding

$ 43,700

Annual Interest Rate

[4]

5.44%

Maturity Date

Mar. 31, 2029

Olkaria IV Loan - DEG 2 and DEG 3 [Member]

Long-Term Debt, Gross

$ 51,500

Amount Issued

91,500

Amount Outstanding

51,500

USG Prudential - NV [Member] | Nonrecourse Debt [Member]

Long-Term Debt, Gross

25,000

Amount Issued

30,700

Amount Outstanding

$ 25,000

Annual Interest Rate

[6]

6.75%

Maturity Date

Dec. 31, 2037

Migdal Senior Unsecured Loan [Member]

Long-Term Debt, Gross

$ 174,800

Amount Issued

200,000

Amount Outstanding

174,800

Loans Assumed in Purchase of USG [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

119,392

79,064

Amount Outstanding

[1]

119,392

79,064

Other Loans, Limited and Non-recourse [Member] | Limited Recourse [Member]

Long-Term Debt, Gross

[1]

4,585

5,930

Amount Outstanding

[1]

4,585

5,930

Other Loans, Limited Resource [Member] | Nonrecourse [Member]

Long-Term Debt, Gross

[1]

5,805

7,697

Amount Outstanding

[1]

5,805

7,697

Senior Unsecured Bonds [Member] | Recourse [Member]

Long-Term Debt, Gross

[1]

255,754

539,567

Amount Outstanding

[1]

255,754

539,567

Hapoalim, Mizrahi, HSBC and Discount Loans [Member] | Recourse [Member]

Long-Term Debt, Gross

[1]

298,884

266,071

Amount Outstanding

[1]

298,884

266,071

Olkaria III DEG [Member] | Recourse [Member]

Long-Term Debt, Gross

[1]

51,528

60,896

Amount Outstanding

[1]

51,528

60,896

Convertible Senior Notes [Member]

Noncurrent portion

[1]

$ 431,250

$ 0

[1]the amounts presented exclude deferred financing costs, if any[2]payable quarterly[3]payable semi-annually[4]payable semi-annually in arrears.[5]payable quarterly in arrears[6]payable semi-annually, except for Nevada non-recourse which is payable quarterly

Note 12 - Long-term Debt, Cre_5

Note 12 - Long-term Debt, Credit Agreements and Finance Liability - Future Minimum Payments Under Long-term Obligations (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 181,660
2024	261,622
2025	176,309
2026	177,539
2027	605,013
Thereafter	650,458
Total	$ 2,052,601

Note 13 - Tax Monetization Tr_2

Note 13 - Tax Monetization Transactions (Details Textual) - USD ($) $ in Thousands								12 Months Ended			72 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 23, 2022	Oct. 25, 2021	Aug. 14, 2019	May 17, 2018	Dec. 16, 2016	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Proceeds from Noncontrolling Interests								$ 5,443	$ 5,390	$ 7,577
JPM Capital Corporation [Member]
Proceeds from Noncontrolling Interests											$ 15,300
JPM Capital Corporation [Member] | Forecast [Member]
Proceeds from Noncontrolling Interests	$ 2,000
DAC 2 [Member]
Percentage Of Ownership Interests							63.25%
Other Geothermal Power Plants [Member]
Percentage Of Ownership Interests							100%
OPC LLC [Member] | JPM Capital Corporation [Member] | Capital Unit, Class B [Member]
Fair Value of Equity Interest Sold							$ 3,000
Tungsten Mountain [Member]
Partnership Agreement, Initial Purchase Price						$ 33,400
Partnership Agreement, Expected Additional Installments						$ 13,000
Partnership Agreement, Percentage of Distributable Cash Flow Generated						97.50%
Partnership Agreement, Percentage of Taxable Income						95%
Partnership Agreement, Percentage of Distributable Cash Flow Generated to Private Investor if Target Return Not Reached						100%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached						99%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached, No Longer Generating PTCs						5%
McGinness Plant [Member]
Partnership Agreement, Initial Purchase Price					$ 59,300
Partnership Agreement, Expected Additional Installments					$ 9,000
Partnership Agreement, Percentage of Distributable Cash Flow Generated					97.50%
Partnership Agreement, Percentage of Taxable Income					95%
Partnership Agreement, Percentage of Distributable Cash Flow Generated to Private Investor if Target Return Not Reached					100%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached					99%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached, No Longer Generating PTCs					5%
McGinness Plant [Member] | Maximum [Member]
Partnership Agreement, Expected Additional Installments					$ 22,000
Mammoth Complex [Member] | CD4 Geothermal Power Plant [Member]
Partnership Agreement, Initial Purchase Price			$ 50,300
Partnership Agreement, Expected Additional Installments			$ 7,300
Partnership Agreement, Percentage of Tax Attributes Attributable to Investor			99%
Partnership Agreement, Percentage of Distributable Cash Flow Generated			97.50%
Partnership Agreement, Percentage of Taxable Income			95%
Partnership Agreement, Percentage of Distributable Cash Flow Generated to Private Investor if Target Return Not Reached			75%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached			99%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached, No Longer Generating PTCs			5%
Partnership Agreement, Initial Purchase Price, Allocated to Noncontrolling Interest			$ 3,900
Partnership Agreement, Initial Purchase Price, Allocated to Tax Benefits			$ 46,400
Ormat Nevada Inc. [Member] | Steamboat Hills Repower Geothermal Power Plant [Member]
Partnership Agreement, Initial Purchase Price				$ 38,900
Partnership Agreement, Expected Additional Installments				$ 5,300
Partnership Agreement, Percentage of Distributable Cash Flow Generated				97.50%
Partnership Agreement, Percentage of Taxable Income				95%
Partnership Agreement, Percentage of Distributable Cash Flow Generated to Private Investor if Target Return Not Reached				100%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached				99%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached, No Longer Generating PTCs				5%
Opal Geo LLC [Member]
Percentage Of Distributable Cash to Controlling Interest							97.50%
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Controlling Interests		95%					1%
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Controlling Interests, PTCs Not Available							95%
Opal Geo LLC [Member] | Capital Unit, Class A [Member]
Percentage Of Ownership Interests							100%
Opal Geo LLC [Member] | JPM Capital Corporation [Member]
Proceeds from Noncontrolling Interests							$ 62,100
Percentage Of Distributable Cash to Nontrolling Interests		100%					2.50%
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Noncontrolling Interests		5%					99%
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Noncontrolling Interests, PTCs Not Available							5%
Opal Geo LLC [Member] | JPM Capital Corporation [Member] | Capital Unit, Class B [Member]
Percentage of Equity Interest Sold							100%

Note 14 - Asset Retirement Ob_3

Note 14 - Asset Retirement Obligations - Reconciliation of the Beginning and Ending Aggregate Carrying Amount of Asset Retirement Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance at beginning of year	$ 84,891	$ 63,457	$ 50,183
Revision in estimated cash flows	(1,802)	10,504	(165)
Liabilities incurred and acquired	9,314	6,953	10,207
Accretion expense	5,257	3,977	3,232
Balance at end of year	$ 97,660	$ 84,891	$ 63,457

Note 15 - Stock-based Compens_3

Note 15 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions

1 Months Ended

3 Months Ended

12 Months Ended

Dec. 31, 2020

Nov. 03, 2020

Jul. 01, 2020

Jun. 15, 2020

May 12, 2020

May 07, 2018

Nov. 30, 2022

Jun. 30, 2022

Nov. 30, 2021

May 31, 2012

Mar. 31, 2022

Dec. 31, 2022

Dec. 31, 2021

Dec. 31, 2020

Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total

$ 14.9

Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)

1 year 3 months 14 days

Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Annual Forfeiture Rate

11.50%

11.10%

10.80%

Increase (Decrease) In Stock Based Compensation Expense Due To Forfeitures, Percent

3.60%

2.80%

0.90%

Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Dividends Growth Rate

20%

Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Weighted Average Expected Dividend Rate

0.70%

Share Price (in dollars per share)

$ 86.48

$ 79.30

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number (in shares)

749,101

881,393

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value

$ 21.9

$ 6.1

Weighted Average [Member]

Share Price (in dollars per share)

$ 82.8

$ 78.4

2012 Stock Incentive Plan [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

6 years

2012 Stock Incentive Plan [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

10 years

2012 Stock Incentive Plan [Member] | Stock Options And Stock Appreciation Rights [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)

4,000,000

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

1 year

2012 Stock Incentive Plan [Member] | Stock Options And Stock Appreciation Rights [Member] | Share-Based Payment Arrangement, Tranche One [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

50%

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

2 years

2012 Stock Incentive Plan [Member] | Stock Options And Stock Appreciation Rights [Member] | Share-Based Payment Arrangement, Tranche One [Member] | Director [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

100%

2012 Stock Incentive Plan [Member] | Stock Options And Stock Appreciation Rights [Member] | Share-Based Payment Arrangement, Tranche Two [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

25%

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

3 years

2012 Stock Incentive Plan [Member] | Stock Options And Stock Appreciation Rights [Member] | Share-Based Payment Arrangement, Tranche Three [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

4 years

2012 Stock Incentive Plan [Member] | Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche Four [Member] | Senior Management [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

25%

2012 Stock Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Non Employee Director [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

1 year

The 2018 Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)

5,000,000

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

1 year

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)

1,700,000

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)

3,562,094

The 2018 Incentive Plan [Member] | Stock Appreciation Rights and Restricted Stock Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

1 year

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

6 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights and Restricted Stock Units [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

6 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights and Restricted Stock Units [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

10 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights and Restricted Stock Units [Member] | Share-Based Payment Arrangement, Tranche One [Member] | Director [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

100%

The 2018 Incentive Plan [Member] | Stock Appreciation Rights and Restricted Stock Units [Member] | Share-Based Payment Arrangement, Tranche One [Member] | Employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

50%

The 2018 Incentive Plan [Member] | Stock Appreciation Rights and Restricted Stock Units [Member] | Share-Based Payment Arrangement, Tranche Two [Member] | Employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

25%

The 2018 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

1 year

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

$ 89.15

$ 67.13

$ 62.3

$ 68

$ 67.2

$ 76.2

$ 0

[1]

$ 0

[1]

$ 0

[1]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

2,103

6,020

11,068

6,142

109,000

[1]

12,000

[1]

35,000

[1]

The 2018 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Director [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares)

19,750

11,804

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

$ 89

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

10,010

The 2018 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Director [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

2 years

The 2018 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Director [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

3 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

6 years

6 years

6 years

6 years

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

$ 25.50

$ 18.25

$ 16.5

$ 18

$ 17.6

$ 71.15

[2]

$ 77.22

[2]

$ 68.82

[2]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

573

45,365

852,475

46,795

513,000

[2]

15,000

[2]

957,000

[2]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercise Price (in dollars per share)

$ 90.28

$ 63.40

$ 69.14

$ 68.34

$ 90.28

The 2018 Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

2 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

4 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member] | Director [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

11,835

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercise Price (in dollars per share)

$ 67.54

The 2018 Incentive Plan [Member] | Performance Stock Units (PSU) [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

$ 96.10

$ 57.3

$ 65

$ 73.2

$ 0

[3]

$ 0

[3]

$ 0

[3]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

1,952

6,540

10,962

5,637

20,000

[3]

0

[3]

25,000

[3]

The 2018 Incentive Plan [Member] | SARs, RSUs, and PSUs [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

2 years

2 years

2 years

The 2018 Incentive Plan [Member] | SARs, RSUs, and PSUs [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

4 years

4 years

4 years

The 2018 Incentive Plan [Member] | Stock Appreciation Rights, Expiratiopn Period 2 [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

5 months

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

1,156

The 2018 Incentive Compensation Plan [Member] | Restricted Stock Units (RSUs) [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

$ 69.6

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

72,303

The 2018 Incentive Compensation Plan [Member] | Stock Appreciation Rights (SARs) [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

22.3

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

513,385

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercise Price (in dollars per share)

$ 71.15

The 2018 Incentive Compensation Plan [Member] | Stock Appreciation Rights (SARs) [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)

6 years

The 2018 Incentive Compensation Plan [Member] | Performance Stock Units (PSU) [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)

$ 75.3

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)

19,581

The 2018 Incentive Compensation Plan [Member] | Stock Appreciation Rights (SARs), Restricted Stock Units (RSUs), and Performance Stock Units (PSU) [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

2 years

The 2018 Incentive Compensation Plan [Member] | Stock Appreciation Rights (SARs), Restricted Stock Units (RSUs), and Performance Stock Units (PSU) [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)

4 years

[1]An RSU represents the right to receive one share of common stock once certain vesting conditions are met. The value of an RSU is identical to the value of the underlying stock.[2]Upon exercise, SARs entitle the recipient to receive shares of common stock equal to the increase in value of the award between the grant date and the exercise date.[3]The Performance shares units shall be paid out based on achievement of three-year relative total stockholder return compared to other companies in S&P 500 index.

Note 15 - Stock-based Compens_4

Note 15 - Stock-based Compensation - Compensation Related to Stock-based Awards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total stock-based compensation expense	$ 11,646	$ 9,168	$ 9,830
Tax effect on stock-based compensation expense	1,270	872	858
Net effect of stock-based compensation expense	10,376	8,296	8,972
Cost of Sales [Member]
Total stock-based compensation expense	6,382	4,656	4,435
Selling and Marketing Expense [Member]
Total stock-based compensation expense	1,230	766	1,081
General and Administrative Expense [Member]
Total stock-based compensation expense	$ 4,034	$ 3,746	$ 4,314

Note 15 - Stock-based Compens_5

Note 15 - Stock-based Compensation - Fair Value of Stock-based Award on the Date of Grant (Details)						1 Months Ended			12 Months Ended
	Mar. 01, 2022	Dec. 31, 2020	Nov. 03, 2020	Jul. 01, 2020	Jun. 12, 2020	Nov. 30, 2022	Nov. 30, 2021	May 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Risk-free interest rates									1.70%	0.70%	0.40%
Expected lives (in weighted average years) (Year)									5 years 3 months 18 days	3 years 9 months 18 days	5 years 9 months 18 days
Dividend yield									0.70%	0.60%	0.60%
Expected volatility (weighted average)									34.60%	36.70%	28.80%
Weighted average forfeiture rate									10.20%	6.10%	8.20%
November 2022 RSUs [Member]
Dividend yield						0.56%
November 2022 RSUs [Member] | Minimum [Member]
Risk-free interest rates						4.13%
Expected lives (in weighted average years) (Year)						2 years
Expected volatility (weighted average)						43.17%
November 2022 RSUs [Member] | Maximum [Member]
Risk-free interest rates						4.38%
Expected lives (in weighted average years) (Year)						3 years
Expected volatility (weighted average)						40.57%
March 2022 SARs, RSUs, PSUs [Member]
Dividend yield	0.67%
March 2022 SARs, RSUs, PSUs [Member] | Minimum [Member]
Risk-free interest rates	1.31%
Expected lives (in weighted average years) (Year)	2 years
Expected volatility (weighted average)	32.85%
March 2022 SARs, RSUs, PSUs [Member] | Maximum [Member]
Risk-free interest rates	1.62%
Expected lives (in weighted average years) (Year)	6 years
Expected volatility (weighted average)	46.07%
November 2021 RSUs [Member]
Expected lives (in weighted average years) (Year)							1 year
Dividend yield							0.65%
Expected volatility (weighted average)							43.26%
November 2021 RSUs [Member] | Minimum [Member]
Risk-free interest rates							0.14%
November 2021 RSUs [Member] | Maximum [Member]
Risk-free interest rates							0.16%
December 2020 SARs, RSUs and PSUs [Member]
Dividend yield		0.61%
December 2020 SARs, RSUs and PSUs [Member] | Minimum [Member]
Risk-free interest rates		0.13%
Expected lives (in weighted average years) (Year)		2 years
Expected volatility (weighted average)		37.68%
December 2020 SARs, RSUs and PSUs [Member] | Maximum [Member]
Risk-free interest rates		0.51%
Expected lives (in weighted average years) (Year)		6 years
Expected volatility (weighted average)		30.15%
November 2020 SARs and RSUs [Member]
Dividend yield			0.61%
November 2020 SARs and RSUs [Member] | Minimum [Member]
Risk-free interest rates			0.12%
Expected lives (in weighted average years) (Year)			1 year
Expected volatility (weighted average)			45.20%
November 2020 SARs and RSUs [Member] | Maximum [Member]
Risk-free interest rates			0.44%
Expected lives (in weighted average years) (Year)			6 years
Expected volatility (weighted average)			29.40%
June 2020 SARs, RSUs and PSUs [Member]
Risk-free interest rates					0%
Dividend yield				0.64%	0.64%
Expected volatility (weighted average)					0%
June 2020 SARs, RSUs and PSUs [Member] | Minimum [Member]
Risk-free interest rates				0.41%
Expected lives (in weighted average years) (Year)				2 years	2 years
Expected volatility (weighted average)				28.50%
June 2020 SARs, RSUs and PSUs [Member] | Maximum [Member]
Risk-free interest rates				0.17%
Expected lives (in weighted average years) (Year)				6 years	6 years
Expected volatility (weighted average)				35.70%
May 2020 SARs, RSUs and PSUs [Member]
Risk-free interest rates								0.44%
Dividend yield								0.63%
May 2020 SARs, RSUs and PSUs [Member] | Minimum [Member]
Expected lives (in weighted average years) (Year)								2 years
Expected volatility (weighted average)
May 2020 SARs, RSUs and PSUs [Member] | Maximum [Member]
Expected lives (in weighted average years) (Year)								6 years
Expected volatility (weighted average)

Note 15 - Stock-based Compens_6

Note 15 - Stock-based Compensation - Summary of the Status of the Incentive Plan (Details) - $ / shares						1 Months Ended	12 Months Ended
	Dec. 31, 2020	Nov. 03, 2020	Jul. 01, 2020	Jun. 15, 2020	May 12, 2020	Nov. 30, 2021	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Outstanding at beginning of year (in shares)							2,025,000
Outstanding at end of year (in shares)							1,810,000		2,025,000
The 2018 Incentive Plan [Member]
Outstanding at beginning of year (in shares)							2,025,000		2,240,000		1,792,000
Outstanding, weighted average exercise price (in dollars per share)							$ 58.70		$ 57.68		$ 50.39
Exercised (in shares)							(728,000)		(159,000)		(469,000)
Exercised, weighted average exercise price (in dollars per share)							$ 52.73		$ 40.47		$ 45.71
Forfeited (in shares)							(129,000)		(83,000)		(100,000)
Forfeited, weighted average exercise price (in dollars per share)							$ 62.27		$ 64.34		$ 55.05
Expired (in shares)							0		0		0
Expired, weighted average exercise price (in dollars per share)							$ 0		$ 0		$ 0
Outstanding at end of year (in shares)	2,240,000						1,810,000		2,025,000		2,240,000
Outstanding, weighted average exercise price (in dollars per share)	$ 57.68						$ 60.08		$ 58.70		$ 57.68
Options and SARs exercisable at end of year (in shares)	704,000						749,000		881,000		704,000
Options and SARs exercisable at end of year, weighted average exercise price (in dollars per share)	$ 51.64						$ 58.30		$ 53.20		$ 51.64
Weighted-average fair value of awards granted during the year, weighted average exercise price (in dollars per share)	$ 20.84						$ 33.02		$ 46.23		$ 20.84
The 2018 Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member]
Other than Options (in shares)	573		45,365	852,475	46,795		513,000	[1]	15,000	[1]	957,000	[1]
Other than Options, weighted average exercise price (in dollars per share)	$ 25.50	$ 18.25	$ 16.5	$ 18	$ 17.6		$ 71.15	[1]	$ 77.22	[1]	$ 68.82	[1]
The 2018 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Other than Options (in shares)	2,103		6,020	11,068	6,142		109,000	[2]	12,000	[2]	35,000	[2]
Other than Options, weighted average exercise price (in dollars per share)	$ 89.15	$ 67.13	$ 62.3	$ 68	$ 67.2	$ 76.2	$ 0	[2]	$ 0	[2]	$ 0	[2]
The 2018 Incentive Plan [Member] | Performance Stock Units (PSU) [Member]
Other than Options (in shares)	1,952		6,540	10,962	5,637		20,000	[3]	0	[3]	25,000	[3]
Other than Options, weighted average exercise price (in dollars per share)	$ 96.10		$ 57.3	$ 65	$ 73.2		$ 0	[3]	$ 0	[3]	$ 0	[3]
[1]Upon exercise, SARs entitle the recipient to receive shares of common stock equal to the increase in value of the award between the grant date and the exercise date.[2]An RSU represents the right to receive one share of common stock once certain vesting conditions are met. The value of an RSU is identical to the value of the underlying stock.[3]The Performance shares units shall be paid out based on achievement of three-year relative total stockholder return compared to other companies in S&P 500 index.

Note 15 - Stock-based Compens_7

Note 15 - Stock-based Compensation - Summary of Information About Stock-based Awards Outstanding (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Number of shares outstanding (in shares)	1,810	2,025
Weighted average remaining contractual life in years, options outstanding (Year)	3 years 1 month 6 days	3 years
Aggregate intrinsic value, options outstanding	$ 47,762	$ 41,967
Number of shares exercisable (in shares)	749	882
Aggregate intrinsic value, options exercisable	$ 19,513	$ 22,999
Weighted average remaining contractual life in years, options exercisable (Year)	1 year 9 months 18 days	1 year 9 months 18 days
Exercise Price 1 [Member]
Number of shares outstanding (in shares)	157	66
Weighted average remaining contractual life in years, options outstanding (Year)	2 years 1 month 6 days	1 year 3 months 18 days
Aggregate intrinsic value, options outstanding	$ 13,536	$ 5,208
Number of shares exercisable (in shares)	0	0
Aggregate intrinsic value, options exercisable	$ 0	$ 0
Exercise Price 4 [Member]
Number of shares outstanding (in shares)	8	8
Weighted average remaining contractual life in years, options outstanding (Year)	2 years	3 years
Aggregate intrinsic value, options outstanding	$ 278	$ 221
Number of shares exercisable (in shares)	6	4
Aggregate intrinsic value, options exercisable	$ 209	$ 110
Exercise price (in dollars per share)	$ 51.71	$ 51.71
Weighted average remaining contractual life in years, options exercisable (Year)	2 years	3 years
Exercise Price 2 [Member]
Number of shares outstanding (in shares)		187
Weighted average remaining contractual life in years, options outstanding (Year)		6 months
Aggregate intrinsic value, options outstanding		$ 6,796
Number of shares exercisable (in shares)		187
Aggregate intrinsic value, options exercisable		$ 6,796
Exercise price (in dollars per share)		$ 42.87
Weighted average remaining contractual life in years, options exercisable (Year)		6 months
Exercise Price 5 [Member]
Number of shares outstanding (in shares)	3	31
Weighted average remaining contractual life in years, options outstanding (Year)	1 year 10 months 24 days	2 years 10 months 24 days
Aggregate intrinsic value, options outstanding	$ 108	$ 819
Number of shares exercisable (in shares)	3	26
Aggregate intrinsic value, options exercisable	$ 108	$ 689
Exercise price (in dollars per share)	$ 53.16	$ 53.16
Weighted average remaining contractual life in years, options exercisable (Year)	1 year 10 months 24 days	2 years 10 months 24 days
Exercise Price 3 [Member]
Number of shares outstanding (in shares)		15
Weighted average remaining contractual life in years, options outstanding (Year)		1 year 10 months 24 days
Aggregate intrinsic value, options outstanding		$ 478
Number of shares exercisable (in shares)		15
Aggregate intrinsic value, options exercisable		$ 478
Exercise price (in dollars per share)		$ 47.46
Weighted average remaining contractual life in years, options exercisable (Year)		1 year 10 months 24 days
Exercise Price 6 [Member]
Number of shares outstanding (in shares)	103	386
Weighted average remaining contractual life in years, options outstanding (Year)	1 year 6 months	2 years 6 months
Aggregate intrinsic value, options outstanding	$ 3,405	$ 9,985
Number of shares exercisable (in shares)	103	227
Aggregate intrinsic value, options exercisable	$ 3,405	$ 5,859
Exercise price (in dollars per share)	$ 53.44	$ 53.44
Weighted average remaining contractual life in years, options exercisable (Year)	1 year 6 months	2 years 6 months
Exercise Price 7 [Member]
Number of shares outstanding (in shares)	295	296
Weighted average remaining contractual life in years, options outstanding (Year)	10 months 24 days	1 year 10 months 24 days
Aggregate intrinsic value, options outstanding	$ 9,236	$ 7,137
Number of shares exercisable (in shares)	295	296
Aggregate intrinsic value, options exercisable	$ 9,236	$ 7,137
Exercise price (in dollars per share)	$ 55.16	$ 55.16
Weighted average remaining contractual life in years, options exercisable (Year)	10 months 24 days	1 year 10 months 24 days
Exercise Price 8 [Member]
Number of shares outstanding (in shares)	8	15
Weighted average remaining contractual life in years, options outstanding (Year)	1 year 7 months 6 days	2 years 7 months 6 days
Aggregate intrinsic value, options outstanding	$ 214	$ 320
Number of shares exercisable (in shares)	8	15
Aggregate intrinsic value, options exercisable	$ 214	$ 320
Exercise price (in dollars per share)	$ 57.97	$ 57.97
Weighted average remaining contractual life in years, options exercisable (Year)	1 year 7 months 6 days	2 years 7 months 6 days
Exercise Price 10 [Member]
Number of shares outstanding (in shares)	74	88
Weighted average remaining contractual life in years, options outstanding (Year)	10 months 24 days	1 year 10 months 24 days
Aggregate intrinsic value, options outstanding	$ 1,719	$ 1,401
Number of shares exercisable (in shares)	74	88
Aggregate intrinsic value, options exercisable	$ 1,719	$ 1,401
Exercise price (in dollars per share)	$ 63.35	$ 63.35
Weighted average remaining contractual life in years, options exercisable (Year)	10 months 24 days	1 year 10 months 24 days
Exercise Price 11 [Member]
Number of shares outstanding (in shares)	45	45
Weighted average remaining contractual life in years, options outstanding (Year)	3 years 6 months	4 years 6 months
Aggregate intrinsic value, options outstanding	$ 1,047	$ 721
Number of shares exercisable (in shares)	23	0
Aggregate intrinsic value, options exercisable	$ 524	$ 0
Exercise price (in dollars per share)	$ 63.40	$ 63.40
Weighted average remaining contractual life in years, options exercisable (Year)	3 years 6 months	4 years 6 months
Exercise Price 12 [Member]
Number of shares outstanding (in shares)	7	12
Weighted average remaining contractual life in years, options outstanding (Year)	3 years 10 months 24 days	4 years 10 months 24 days
Aggregate intrinsic value, options outstanding	$ 125	$ 139
Number of shares exercisable (in shares)	7	12
Aggregate intrinsic value, options exercisable	$ 125	$ 139
Exercise price (in dollars per share)	$ 67.54	$ 67.54
Weighted average remaining contractual life in years, options exercisable (Year)	3 years 10 months 24 days	4 years 10 months 24 days
Exercise Price 9 [Member]
Number of shares outstanding (in shares)		1
Weighted average remaining contractual life in years, options outstanding (Year)		6 months
Aggregate intrinsic value, options outstanding		$ 19
Number of shares exercisable (in shares)		1
Aggregate intrinsic value, options exercisable		$ 19
Exercise price (in dollars per share)		$ 58.79
Weighted average remaining contractual life in years, options exercisable (Year)		6 months
Exercise Price 13 [Member]
Number of shares outstanding (in shares)	47	47
Weighted average remaining contractual life in years, options outstanding (Year)	3 years 4 months 24 days	4 years 4 months 24 days
Aggregate intrinsic value, options outstanding	$ 849	$ 513
Number of shares exercisable (in shares)	23	0
Aggregate intrinsic value, options exercisable	$ 424	$ 0
Exercise price (in dollars per share)	$ 68.34	$ 68.34
Weighted average remaining contractual life in years, options exercisable (Year)	3 years 4 months 24 days	4 years 4 months 24 days
Exercise Price 14 [Member]
Number of shares outstanding (in shares)	539	799
Weighted average remaining contractual life in years, options outstanding (Year)	3 years 4 months 24 days	4 years 4 months 24 days
Aggregate intrinsic value, options outstanding	$ 9,357	$ 8,123
Number of shares exercisable (in shares)	199	1
Aggregate intrinsic value, options exercisable	$ 3,456	$ 12
Exercise price (in dollars per share)	$ 69.14	$ 69.14
Weighted average remaining contractual life in years, options exercisable (Year)	3 years 4 months 24 days	4 years 4 months 24 days
Exercise Price 15 [Member]
Number of shares outstanding (in shares)	499	4
Weighted average remaining contractual life in years, options outstanding (Year)	5 years 2 months 12 days	3 years 7 months 6 days
Aggregate intrinsic value, options outstanding	$ 7,644	$ 30
Number of shares exercisable (in shares)	0	2
Aggregate intrinsic value, options exercisable	$ 0	$ 15
Exercise price (in dollars per share)	$ 71.15	$ 71.71
Weighted average remaining contractual life in years, options exercisable (Year)	5 years 2 months 12 days	3 years 7 months 6 days
Exercise Price 16 [Member]
Number of shares outstanding (in shares)	4	0
Weighted average remaining contractual life in years, options outstanding (Year)	2 years 7 months 6 days	0 years
Aggregate intrinsic value, options outstanding	$ 59	$ 0
Number of shares exercisable (in shares)	3	0
Aggregate intrinsic value, options exercisable	$ 44	$ 0
Exercise price (in dollars per share)	$ 71.71	$ 72.14
Weighted average remaining contractual life in years, options exercisable (Year)	2 years 7 months 6 days	0 years
Exercise Price 17 [Member]
Number of shares outstanding (in shares)	5	8
Weighted average remaining contractual life in years, options outstanding (Year)	2 years 10 months 24 days	3 years 10 months 24 days
Aggregate intrinsic value, options outstanding	$ 49	$ 24
Number of shares exercisable (in shares)	5	8
Aggregate intrinsic value, options exercisable	$ 49	$ 24
Exercise price (in dollars per share)	$ 76.43	$ 76.43
Weighted average remaining contractual life in years, options exercisable (Year)	2 years 10 months 24 days	3 years 10 months 24 days
Exercise Price 18 [Member]
Number of shares outstanding (in shares)	9	1
Weighted average remaining contractual life in years, options outstanding (Year)	4 years 10 months 24 days	5 years
Aggregate intrinsic value, options outstanding	$ 85	$ 0
Number of shares exercisable (in shares)	0	0
Aggregate intrinsic value, options exercisable	$ 0	$ 0
Exercise price (in dollars per share)	$ 76.54	$ 90.28
Weighted average remaining contractual life in years, options exercisable (Year)	4 years 10 months 24 days	5 years
Exercise Price 19 [Member]
Number of shares outstanding (in shares)	6
Weighted average remaining contractual life in years, options outstanding (Year)	4 years 3 months 18 days
Aggregate intrinsic value, options outstanding	$ 51
Number of shares exercisable (in shares)	0
Aggregate intrinsic value, options exercisable	$ 0
Exercise price (in dollars per share)	$ 78.53
Weighted average remaining contractual life in years, options exercisable (Year)	4 years 3 months 18 days
Exercise Price 20 [Member]
Number of shares outstanding (in shares)	1
Weighted average remaining contractual life in years, options outstanding (Year)	4 years
Aggregate intrinsic value, options outstanding	$ 0
Number of shares exercisable (in shares)	0
Aggregate intrinsic value, options exercisable	$ 0
Exercise price (in dollars per share)	$ 90.28
Weighted average remaining contractual life in years, options exercisable (Year)	4 years

Note 16 - Interest Expense, N_3

Note 16 - Interest Expense, Net - Components of Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest related to sale of tax benefits	$ 14,853	$ 12,246	$ 9,344
Interest expense	91,617	84,994	79,018
Less — amount capitalized	(18,727)	(14,582)	(10,409)
Interest Expense, Total	$ 87,743	$ 82,658	$ 77,953

Note 17 - Income Taxes (Details

Note 17 - Income Taxes (Details Textual) - USD ($) $ in Thousands			1 Months Ended	12 Months Ended
		Apr. 24, 2018	Sep. 30, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2014
Deferred Tax Assets, Tax Credit Carryforwards, Foreign				$ 32,333	$ 92,240
Deferred Tax Assets, Valuation Allowance				2,473	11,298	$ 22,193
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount				8,800
Uncertain Tax Benefit, Reudction to Deferred Tax Asset	[1]			95	95
Israel Tax Authority [Member]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate				$ 6,600	$ 5,700
Accounting Standards Update 2013-11 [Member]
Uncertain Tax Benefit, Reudction to Deferred Tax Asset									$ 100
U.S. Geothermal [Member]
Business Acquisition, Percentage of Voting Interests Acquired		100%
Business Combination, Consideration Transferred, Total		$ 110,000
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets (Liabilities), Net		1,700
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Deferred Tax Asset		1,800
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Period (Year)				20 years
General Business Tax Credit Carryforward [Member] | Minimum [Member]
Tax Credit Carryforward Expiration Year				2026
Domestic Tax Authority [Member]
Operating Loss Carryforwards				$ 42,000
Operating Loss Carryforwards Expiring Amount				$ 109,100
Open Tax Year				2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
Domestic Tax Authority [Member] | U.S. Geothermal [Member]
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		113,900
Foreign Tax Authority [Member]
Tax Credit Carryforward Expiration Period (Year)				10 years
Tax Credit Carryforward Expiration Year				2027
Deferred Tax Assets, Tax Credit Carryforwards, Foreign				$ 32,300
Foreign Tax Authority [Member] | Israel Tax Authority [Member]
Foreign Income Tax Expense (Benefit), Continuing Operations, Total				$ 16,400
National Corporate Tax Rate							16%	23%	16%
Foreign Tax Authority [Member] | Israel Tax Authority [Member] | Ormat Systems Ltd [Member]
Effective Income Tax Rate, Year Four and Thereafter										16%
Foreign Tax Authority [Member] | Ministry of the Economy, Finance and Industry, France [Member]
National Corporate Tax Rate				25%		28%	31%
Foreign Tax Authority [Member] | Guadeloupe Tax Authority [Member]
National Corporate Tax Rate					26.50%
Foreign Tax Authority [Member] | Tax Authority of Guatemala in Guatemala [Member]
National Corporate Tax Rate				25%
Tax Exemption Period (Year)				10 years
Effective Income Tax Rate				7%
Foreign Tax Authority [Member] | Sistema de Administración de Rentas [Member]
Income Taxes Exempt Period (Year)			10 years
Foreign Tax Authority [Member] | Kenya Revenue Authority [Member]
National Corporate Tax Rate				37.50%
State and Local Jurisdiction [Member]
Operating Loss Carryforwards				$ 273,300
Operating Loss Carryforwards Expiring Amount				268,700
Operating Loss Carryforwards Available For Indefinite Period				4,600
Deferred Tax Assets, Investments				$ 1,000
Open Tax Year				2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
State and Local Jurisdiction [Member] | U.S. Geothermal [Member]
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		$ 49,900
State and Local Jurisdiction [Member] | Minimum [Member]
Tax Credit Carryforward Expiration Year				2025
State and Local Jurisdiction [Member] | Maximum [Member]
Tax Credit Carryforward Expiration Year				2042
[1]The non-current deferred tax asset has been reduced by the uncertain tax benefit of $0.1 million in accordance with ASU 2013-11, Income Taxes.

Note 17 - Income Taxes - Income

Note 17 - Income Taxes - Income From Continuing Operations Before Income Taxes and Equity in Income (Losses) of Investees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
U.S	$ 23,709	$ 37,032	$ 43,273
Non-U.S. (foreign)	71,900	66,519	125,444
Income from operations before income tax and equity in earnings (losses) of investees	$ 95,609	$ 103,551	$ 168,717

Note 17 - Income Taxes - Compon

Note 17 - Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 641	$ 0	$ 0
State	2,227	400	363
Foreign	29,370	25,096	61,574
Total current income tax expense	32,238	25,496	61,937
Deferred:
Federal	(17,179)	(3,267)	22,682
State	2,649	9,301	7,277
Foreign	(2,966)	(6,680)	(24,893)
Total deferred tax provision (benefit)	(17,496)	(646)	5,066
Total Income tax provision	$ 14,742	$ 24,850	$ 67,003

Note 17 - Income Taxes - Differ

Note 17 - Income Taxes - Difference Between US Federal Statutory Tax Rate and Company's Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
U.S. federal statutory tax rate	21%	21%	21%
Foreign tax credits	(3.80%)	(0.40%)	(0.30%)
Withholding tax	0.20%	6%	4.40%
State income tax, net of federal benefit	5.30%	8.80%	3.80%
Uncertain tax positions	0.90%	3.60%	(7.50%)
Effect of foreign income tax, net	6.20%	(5.20%)	8.50%
Production tax credits	(4.00%)	(4.20%)	(1.80%)
Tax on global intangible low-tax income	4.80%	9.30%	11.10%
Noncontrolling interest	(2.20%)	(2.50%)	(1.60%)
Other, net	(3.70%)	(1.90%)	(0.90%)
Effective tax rate	15.40%	24%	39.70%
Domestic Tax Authority [Member]
Valuation allowance	(9.30%)	(10.40%)	3%

Note 17 - Income Taxes - Net De

Note 17 - Income Taxes - Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets (liabilities):
Net foreign deferred taxes, primarily depreciation	$ (49,295)	$ (54,899)
Depreciation, deferred tax asset	50,214
Depreciation, deferred tax liability		(62,906)
Intangible drilling costs, liability	(13,855)	(11,501)
Net operating loss carryforward - U.S.	26,824	32,848
Tax monetization transaction	(84,585)	(62,533)
Right-of-use assets	(5,824)	(5,101)
Lease liabilities	5,527	5,148
Production tax credits	109,109	108,103
Foreign tax credits	32,333	92,240
Withholding tax	(21,007)	(20,521)
Basis difference in partnership interest	(51,392)	(45,683)
Excess business interest	522	13,662
Sale and leaseback transaction	62,939	64,070
Other assets	13,655	12,998
Accrued liabilities and other	5,208	4,161
Total	80,373	70,086
Less - valuation allowance	(2,473)	(11,298)	$ (22,193)
Total, net	$ 77,900	$ 58,788

Note 17 - Income Taxes - Reconc

Note 17 - Income Taxes - Reconciliation of Beginning and Ending Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance at beginning of the year	$ 11,298	$ 22,193
Additions to valuation allowance	35	2,029
Release of valuation allowance	(8,860)	(12,924)
Balance at end of the year	$ 2,473	$ 11,298

Note 17 - Income Taxes - Balanc

Note 17 - Income Taxes - Balance Sheet Presentation of Deferred Taxes (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Non-current deferred tax assets		$ 161,365	$ 143,450
Non-current deferred tax liabilities		(83,465)	(84,662)
Non-current deferred tax assets, net		77,900	58,788
Uncertain tax benefit offset (1)	[1]	(95)	(95)
Deferred Tax Assets (Liabilities), After Uncertain Tax Benefit Offset		$ 77,805	$ 58,693
[1]The non-current deferred tax asset has been reduced by the uncertain tax benefit of $0.1 million in accordance with ASU 2013-11, Income Taxes.

Note 17 - Income Taxes - Reco_2

Note 17 - Income Taxes - Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance at beginning of year	$ 5,076	$ 1,673
Additions based on tax positions taken in prior years	0	9
Additions based on tax positions taken in the current year	364	3,408
Reduction based on tax positions taken in prior years	(47)	(14)
Reduction based on tax positions taken in the current year	(93)	0
Balance at end of year	$ 5,300	$ 5,076

Note 17 - Income Taxes - Foreig

Note 17 - Income Taxes - Foreign Subsidiaries Income Tax Years Open to Examination (Details)	12 Months Ended
	Dec. 31, 2022
Earliest Tax Year [Member] | ISRAEL
Countries	2019
Earliest Tax Year [Member] | KENYA
Countries	2018
Earliest Tax Year [Member] | GUATEMALA
Countries	2018
Earliest Tax Year [Member] | HONDURAS
Countries	2017
Earliest Tax Year [Member] | GUADELOUPE
Countries	2019
Latest Tax Year [Member] | ISRAEL
Countries	2022
Latest Tax Year [Member] | KENYA
Countries	2022
Latest Tax Year [Member] | GUATEMALA
Countries	2022
Latest Tax Year [Member] | HONDURAS
Countries	2022
Latest Tax Year [Member] | GUADELOUPE
Countries	2022

Note 18 - Business Segments (De

Note 18 - Business Segments (Details Textual) $ in Thousands		12 Months Ended
		Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2021 USD ($)
Number of Reportable Segments		3
Revenue from Contract with Customer, Including Assessed Tax	[1]	$ 734,159	$ 663,084	$ 705,342
Goodwill, Ending Balance		90,325	89,954	24,566
Electricity Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax		631,727	585,771	541,393
Goodwill, Ending Balance		85,700	85,300	20,500
Electricity Segment [Member] | Accounting Standards Update 2014-09 [Member]
Revenue from Contract with Customer, Including Assessed Tax		102,500	83,400	68,100
Energy Storage and Management Services [Member]
Goodwill, Ending Balance		4,600	4,600	4,100	$ 66,200
Product Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax		71,414	46,920	148,125
Goodwill, Ending Balance		$ 0	$ 0	$ 0
[1]Revenues as reported in the geographic area in which they originate.

Note 18 - Business Segments - S

Note 18 - Business Segments - Summarized Financial Information Concerning Reportable Segments (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Depreciation and amortization expense		198,792	182,972	156,612
Operating income (loss)		152,803	169,357	214,013
Segment assets at period end	[2],[3]	4,611,579	4,425,678	3,888,987
Expenditures for long-lived assets		563,476	419,272	320,738
Segment Reconciling Items [Member]
Revenue		0	0	0
Segment assets at period end		115,693	105,886	98,217
Electricity Segment [Member]
Revenue		631,727	585,771	541,393
Depreciation and amortization expense		179,966	164,490	144,357
Operating income (loss)		156,178	171,550	205,256
Segment assets at period end	[2],[3]	4,253,910	4,142,341	3,607,384
Expenditures for long-lived assets		462,269	383,307	267,843
Electricity Segment [Member] | Segment Reconciling Items [Member]
Revenue		0	0	0
Segment assets at period end		115,693	105,886	98,217
Product Segment [Member]
Revenue		71,414	46,920	148,125
Depreciation and amortization expense		7,302	7,719	6,010
Operating income (loss)		(1,084)	(3,641)	13,145
Segment assets at period end	[2],[3]	118,018	113,817	145,911
Expenditures for long-lived assets		16,352	10,687	18,011
Product Segment [Member] | Segment Reconciling Items [Member]
Revenue		83,394	129,589	113,200
Segment assets at period end		0	0	0
Other Segments [Member]
Revenue		31,018	30,393	15,824
Depreciation and amortization expense		11,524	10,763	6,245
Operating income (loss)		(2,291)	1,448	(4,388)
Segment assets at period end	[2],[3]	239,651	169,520	135,692
Expenditures for long-lived assets		84,855	25,278	34,884
Other Segments [Member] | Segment Reconciling Items [Member]
Revenue		0	0	0
Segment assets at period end		0	0	0
UNITED STATES
Revenue	[1],[4]	484,055	440,110	363,023
UNITED STATES | Electricity Segment [Member]
Revenue	[4]	446,000	404,303	341,399
UNITED STATES | Product Segment [Member]
Revenue	[4]	7,037	5,414	5,800
UNITED STATES | Other Segments [Member]
Revenue	[4]	31,018	30,393	15,824
Non-US [Member]
Revenue	[5]	250,104	222,974	342,319
Non-US [Member] | Electricity Segment [Member]
Revenue	[5]	185,727	181,468	199,994
Non-US [Member] | Product Segment [Member]
Revenue	[5]	64,377	41,506	142,325
Non-US [Member] | Other Segments [Member]
Revenue	[5]	$ 0	$ 0	$ 0
[1]Revenues as reported in the geographic area in which they originate.[2]Electricity segment assets include goodwill in the amount of $85.3 million, $20.5 million and $20.1 million as of December 31, 2021, 2020 and 2019, respectively, $65.4 million of which was added in the third quarter of 2021 as a result of the Terra-Gen Transaction as further described under Note 2 to the consolidated financial statements. Energy Storage segment assets include goodwill in the amount of $4.6 million, $4.1 million and $0.0 million as of December 31, 2021, 2020 and 2019, respectively. No goodwill is included in the Product segment assets as of December 31, 2021, 2020 and 2019.[3]Including unconsolidated investments[4]Electricity segment revenues in the United States are all accounted under lease accounting, except for $83.4 million, $68.1 million and $61.3 million for the years 2021, 2020 and 2019, which are accounted under ASC 606. Product and Energy Storage segment revenues in the United States are accounted under ASC 606, as further described under Note 1 to the consolidated financial statements.[5]Electricity segment revenues in foreign countries are all accounted under lease accounting. Product and Energy Storage segment revenues in foreign countries are accounted under ASC 606 as further described under Note 1 to the consolidated financial statements.

Note 18 - Business Segments - R

Note 18 - Business Segments - Reconciling Information Between Reportable Segments and Consolidated Totals (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Operating income (loss)		152,803	169,357	214,013
Interest income		3,417	2,124	1,717
Interest expense, net		(87,743)	(82,658)	(77,953)
Derivatives and foreign currency transaction gains (losses)		(6,044)	(14,720)	3,802
Income attributable to sale of tax benefits		33,885	29,582	25,720
Other non-operating income (expense), net		(709)	(134)	1,418
Total consolidated income before income taxes and equity in earnings (losses) of investees		95,609	103,551	168,717
Intersegment Eliminations [Member]
Revenue		83,394	129,589	113,200
Consolidation, Eliminations [Member]
Revenue		$ (83,394)	$ (129,589)	$ (113,200)
[1]Revenues as reported in the geographic area in which they originate.

Note 18 - Business Segments -_2

Note 18 - Business Segments - Revenues as Reported in the Geographic Area (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
UNITED STATES
Revenue	[1],[2]	484,055	440,110	363,023
INDONESIA
Revenue	[1]	15,631	8,056	0
KENYA
Revenue	[1]	105,837	102,844	115,474
TURKEY
Revenue	[1]	1,961	2,723	65,535
CHILE
Revenue	[1]	579	7,035	32,418
GUATEMALA
Revenue	[1]	28,831	26,868	27,391
NEW ZEALAND
Revenue	[1]	17,130	6,770	34,985
HONDURAS
Revenue	[1]	33,837	35,233	35,197
Other Foreign Countries [Member]
Revenue	[1]	$ 46,298	$ 33,445	$ 31,319
[1]Revenues as reported in the geographic area in which they originate.[2]Electricity segment revenues in the United States are all accounted under lease accounting, except for $83.4 million, $68.1 million and $61.3 million for the years 2021, 2020 and 2019, which are accounted under ASC 606. Product and Energy Storage segment revenues in the United States are accounted under ASC 606, as further described under Note 1 to the consolidated financial statements.

Note 18 - Business Segments - L

Note 18 - Business Segments - Long Lived Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Long Lived Assets, Geographic Area	$ 3,413,872	$ 3,042,227	$ 2,606,240
UNITED STATES
Long Lived Assets, Geographic Area	2,857,503	2,527,429	2,084,021
KENYA
Long Lived Assets, Geographic Area	301,491	297,427	289,266
Other Foreign Countries [Member]
Long Lived Assets, Geographic Area	$ 254,878	$ 217,371	$ 232,953

Note 18 - Business Segments -_3

Note 18 - Business Segments - Revenue From Major Customers (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Southern California Public Power Authority [Member]
Revenue	[2]	$ 157,663	$ 157,318	$ 145,450
Percentage of revenues	[2]	21.50%	23.70%	20.60%
Sierra Pacific Power Company And Nevada Power Company [Member]
Revenue	[2],[3]	$ 124,116	$ 120,206	$ 123,734
Percentage of revenues	[2],[3]	16.90%	18.10%	17.50%
Kenya Power and Lighting Co LTD [Member]
Revenue	[2]	$ 105,837	$ 102,844	$ 115,474
Percentage of revenues	[2]	14.40%	15.50%	16.40%
[1]Revenues as reported in the geographic area in which they originate.[2]Revenues reported in Electricity segment.[3]Subsidiaries of NV Energy, Inc.

Note 20 - Employee Benefit Pl_3

Note 20 - Employee Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	60%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	5%	4%	4%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 2,600	$ 1,800	$ 1,600
Deposits And Other Assets Noncurrent	39,762	78,915
Severance Costs	2,200	2,000	3,000
Gain (Loss) Of Severance Fund	(1,000)	1,300	$ 900
Israeli Severance Funds [Member]
Deposits And Other Assets Noncurrent	$ 6,900	$ 9,100

Note 20 - Employee Benefit Pl_4

Note 20 - Employee Benefit Plan - Expected Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 2,156
2024	81
2025	508
2026	406
2027	529
2028-2045	8,467
Total	$ 12,147

Note 21 - Commitments and Con_2

Note 21 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Letters of Credit Outstanding, Amount	$ 197,400
Recorded Unconditional Purchase Obligation, Total	569,900
Construction in Progress, Gross	893,198	$ 721,483
Dixie Meadows PPA [Member]
Construction in Progress, Gross	84,400
Ormat Systems Ltd [Member]
Royalty Expense	0	0	$ 0
Royalty Cap Amount	2,300	2,200
Royalty Cap Amount LIBOR Rate	$ 1,300	1,200
Ormat Systems Ltd [Member] | Minimum [Member]
Percentage For Royalty To Be Paid	3.50%
Ormat Systems Ltd [Member] | Maximum [Member]
Percentage For Royalty To Be Paid	5%
Construction In Process [Member]
Recorded Unconditional Purchase Obligation, Total	$ 404,100
Geothermal Resource Agreement [Member]
Royalty Expense	$ 30,100	$ 25,200	$ 20,800

Note 22 - Leases - Lessee's Tot

Note 22 - Leases - Lessee's Total Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lease cost
Amortization of right-of-use assets	$ 2,861	$ 3,265	$ 3,422
Interest on lease liabilities	441	770	1,226
Operating lease cost	3,695	3,707	3,303
Variable lease cost	3,893	2,368	1,891
Short-term lease cost	0	0	0
Total lease cost	10,890	10,110	9,842
Operating cash flows for finance leases	441	770	1,226
Operating cash flows for operating leases	4,507	3,589	3,213
Financing cash flows for finance leases	2,983	3,181	2,890
Right-of-use assets obtained in exchange for new finance lease liabilities	2,473	948	1,028
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 6,286	$ 5,227	$ 2,614
Weighted-average remaining lease term — finance leases (in years) (Year)	1 year 9 months 18 days	2 years 9 months 18 days
Weighted-average remaining lease term — operating leases (in years) (Year)	17 years 10 months 24 days	17 years 1 month 6 days
Weighted-average discount rate — finance leases (in percentage)	3%	3%
Weighted-average discount rate — operating leases (in percentage)	5%	5%

Note 22 - Leases - Lessee Futur

Note 22 - Leases - Lessee Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023, operating lease	$ 2,925
2023, finance lease	1,710
2024, operating lease	2,547
2024, finance lease	1,031
2025, operating lease	2,225
2025, finance lease	866
2026, operating lease	2,086
2026, finance lease	483
2027, operating lease	1,897
2027, finance lease	29
Thereafter, operating leases	22,686
Thereafter, finance leases	0
Total future minimum lease payments, operating leases	34,366
Total future minimum lease payments, finance leases	4,119
Less imputed interest, operating leases	12,231
Less imputed interest, finance leases	276
Total, operating leases	22,135
Total, finance leases	3,843
Two Contracted Geothermal Assets in Nevada [Member]
2023, financing liability	22,368	[1]
2024, financing liability	102,074	[1]
2025, financing liability	13,324	[1]
2026, financing liability	18,118	[1]
2027, financing liability	17,403
Thereafter, financing liability	96,059	[1]
Total future minimum lease payments	269,346	[1]
Less imputed interest, financing liability	27,317	[1]
Total, financing liability	$ 242,029	[1]
[1]Financing liability was assumed as part of the Terra-Gen business combination transaction as further described under Note 2 to the consolidated financial statements and is related to the sale and lease-back transaction of the Dixie Valley geothermal assets.

Note 22 - Leases - Lease Income

Note 22 - Leases - Lease Income Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lease income relating to lease payments of operating leases	$ 529,264	$ 502,355	$ 473,260

Note 23 - Subsequent Events (De

Note 23 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 23, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends, Common Stock, Total		$ 27,143	$ 26,986	$ 22,471
Subsequent Event [Member]
Dividends, Common Stock, Total	$ 6,700
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.12
Dividends Payable, Date of Record	Mar. 08, 2023
Dividends Payable, Date to be Paid	Mar. 22, 2023