Ormat (ORA) 10-Q 11 May 20 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 07, 2020
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	Q1
Document Fiscal Year Focus	2020
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
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
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,035,718
Title of 12(b) Security	Common Stock
Trading Symbol	ORA
Security Exchange Name	NYSE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Mar. 31, 2020		Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 231,149		$ 71,173
Restricted cash and cash equivalents (primarily related to VIEs)		88,627		81,937
Receivables:
Trade less allowance for credit losses of $779 and $0, respectively (primarily related to VIEs)		168,924		154,525
Other		27,718		22,048
Inventories		34,107		34,949
Costs and estimated earnings in excess of billings on uncompleted contracts	[1]	22,305		38,365
Prepaid expenses and other		11,456		12,667
Total current assets		584,286		415,664
Investment in unconsolidated companies		76,008		81,140
Deposits and other		37,734		38,284
Deferred income taxes		118,682		129,510
Property, plant and equipment, net		1,981,086		1,971,415
Construction-in-process		413,789		376,555
Operating leases right of use		17,611		17,405
Finance leases right of use		14,149		14,161
Intangible assets, net		182,305		186,220
Goodwill		19,963		20,140
Total assets		3,445,613	[2],[3]	3,250,494
Current liabilities:
Accounts payable and accrued expenses		140,867		141,857
Short term revolving credit lines with banks (full recourse)		270,500		40,550
Commercial paper		8,275		50,000
Billings in excess of costs and estimated earnings on uncompleted contracts		5,937		2,755
Current portion of long-term debt:
Senior secured notes		24,617		24,473
Other loans		34,408		34,458
Full recourse		76,572		76,572
Operating lease liabilities		2,974		2,743
Finance lease liabilities		3,169		3,068
Total current liabilities		567,319		376,476
Long-term debt, net of current portion:
Senior secured notes (less deferred financing costs of $6,049 and $6,317, respectively)		331,077		339,336
Other loans (less deferred financing costs of $9,872 and $10,482, respectively)		309,588		317,395
Senior unsecured bonds (less deferred financing costs of $623 and $675, respectively)		286,505		286,453
Other loans (less deferred financing costs of $1,475 and $1,519, respectively)		68,789		68,747
Operating lease liabilities		14,035		14,008
Finance lease liabilities		11,230		11,209
Liability associated with sale of tax benefits		121,627		123,468
Deferred income taxes		100,969		97,126
Liability for unrecognized tax benefits		14,560		14,643
Liabilities for severance pay		18,208		18,751
Asset retirement obligation		50,786		50,183
Other long-term liabilities		7,867		8,039
Total liabilities		1,902,560		1,725,834
Commitments and contingencies (Note 9)
Redeemable noncontrolling interest		9,402		9,250
Equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 51,035,718 and 51,031,652 issued and outstanding as of March 31, 2020 and December 31, 2019, respectively		51		51
Additional paid-in capital		915,139		913,150
Retained earnings		507,537		487,873
Accumulated other comprehensive income (loss)		(13,662)		(8,654)
Total stockholders' equity attributable to Company's stockholders		1,409,065		1,392,420
Noncontrolling interest		124,586		122,990
Total equity		1,533,651		1,515,410
Total liabilities, redeemable noncontrolling interest and equity		$ 3,445,613		$ 3,250,494
[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.
[2]	Electricity segment assets include goodwill in the amount of $20.0 million and $20.1 million as of March 31, 2020 and 2019, respectively. No goodwill is included in the Product and ESMS segment assets as of March 31, 2020 and 2019.
[3]	Including unconsolidated investments 76,008 76,008

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Trade, allowance for credit losses	$ 779	$ 0
Property, plant and equipment, net	1,981,086	1,971,415
Construction-in-process	413,789	376,555
Operating leases right of use	17,611	17,405
Finance leases right of use	$ 14,149	$ 14,161
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)	51,035,718	51,031,652
Common stock, shares outstanding (in shares)	51,035,718	51,031,652
Senior Secured Notes [Member]
Deferred financing costs	$ 6,049	$ 6,317
Other Loans, Limited and Non-recourse [Member]
Deferred financing costs	9,872	10,482
Senior Unsecured Bonds [Member]
Deferred financing costs	623	675
Other Loans, Full Recourse [Member]
Deferred financing costs	1,475	1,519
Variable Interest Entity, Primary Beneficiary [Member]
Property, plant and equipment, net	1,889,857	1,880,547
Construction-in-process	166,124	149,830
Operating leases right of use	4,796	4,688
Finance leases right of use	$ 8,730	$ 8,479

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenue	$ 192,113	$ 199,038
Cost of revenues:
Cost of revenues	110,295	124,859
Gross profit	81,818	74,179
Operating expenses:
Research and development expenses	1,619	900
Selling and marketing expenses	4,794	3,865
General and administrative expenses	14,348	15,689
Operating income	61,057	53,725
Other income (expense):
Interest income	402	293
Interest expense, net	(17,273)	(21,223)
Derivatives and foreign currency transaction gains (losses)	393	472
Income attributable to sale of tax benefits	4,132	7,764
Other non-operating income (expense), net	78	91
Income from operations before income tax and equity in earnings (losses) of investees	48,789	41,122
Income tax (provision) benefit	(18,148)	(14,039)
Equity in earnings (losses) of investees, net	(735)	1,047
Net income	29,906	28,130
Net income attributable to noncontrolling interest	(3,873)	(2,184)
Net income attributable to the Company's stockholders	26,033	25,946
Comprehensive income:
Net income	29,906	28,130
Other comprehensive income (loss), net of related taxes:
Change in foreign currency translation adjustments	(645)	(1,348)
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment	(4,755)	(1,145)
Change in respect of derivative instruments designated for cash flow hedge	13	22
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge	(8)	(8)
Comprehensive income	24,511	25,651
Comprehensive income attributable to noncontrolling interest	(3,486)	(1,862)
Comprehensive income attributable to the Company's stockholders	$ 21,025	$ 23,789
Basic:
Net income (in dollars per share)	$ 0.51	$ 0.51
Diluted:
Net income (in dollars per share)	$ 0.51	$ 0.51
Weighted average number of shares used in computation of earnings per share attributable to the Company's stockholders:
Basic (in shares)	51,036	50,709
Diluted (in shares)	51,526	51,012
Electricity [Member]
Revenues:
Revenue	$ 142,856	$ 142,908
Cost of revenues:
Cost of revenues	71,368	77,543
Product [Member]
Revenues:
Revenue	47,411	52,128
Cost of revenues:
Cost of revenues	36,978	42,106
Energy Storage and Management Services [Member]
Revenues:
Revenue	1,846	4,002
Cost of revenues:
Cost of revenues	$ 1,949	$ 5,210

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ 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]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 [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]Additional Paid-in Capital [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]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2018	50,700														50,700
Balance at Dec. 31, 2018	$ 0	$ 0	$ (58)	$ 0	$ (58)	$ 0	$ (58)	$ 51	$ 901,363	$ 422,164	$ (3,799)	$ 1,319,779	$ 125,259	$ 1,445,038	$ 51	$ 901,363	$ 422,222	$ (3,799)	$ 1,319,837	$ 125,259	$ 1,445,096
Stock-based compensation															$ 0	2,360	0	0	2,360	0	2,360
Exercise of options by employees and directors (in shares)															52
Exercise of options by employees and directors															$ 0	0	0	0	0	0	0
Cash paid to noncontrolling interest															0	0	0	0	0	(4,146)	(4,146)
Cash dividend declared															0	0	(5,579)	0	(5,579)	0	(5,579)
Net income															0	0	25,946	0	25,946	1,855	27,801
Change in foreign currency translation adjustments															0	0	0	(1,026)	(1,026)	(322)	(1,348)
Change in respect of derivative instruments designated for cash flow hedge															0	0	0	22	22	0	22
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment															0	0	0	(1,145)	(1,145)	0	(1,145)
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge, net															$ 0	0	0	(8)	(8)	0	(8)
Balance (in shares) at Mar. 31, 2019															50,752
Balance at Mar. 31, 2019															$ 51	903,723	442,531	(5,956)	1,340,349	122,646	1,462,995
Balance (in shares) at Dec. 31, 2019	51,032														51,032
Balance at Dec. 31, 2019	$ 0	$ 0	$ (755)	$ 0	$ (755)	$ 0	$ (755)	$ 51	$ 913,150	$ 487,118	$ (8,654)	$ 1,391,665	$ 122,990	$ 1,514,655	$ 51	913,150	487,873	(8,654)	1,392,420	122,990	1,515,410
Stock-based compensation															$ 0	1,989	0	0	1,989	0	1,989
Exercise of options by employees and directors (in shares)															4
Exercise of options by employees and directors															$ 0	0	0	0	0	0	0
Cash paid to noncontrolling interest															0	0	0	0	0	(3,007)	(3,007)
Cash dividend declared															0	0	(5,614)	0	(5,614)	0	(5,614)
Net income															0	0	26,033	0	26,033	3,543	29,576
Change in foreign currency translation adjustments															0	0	0	(258)	(258)	(387)	(645)
Change in respect of derivative instruments designated for cash flow hedge															0	0	0	13	13	0	13
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment															0	0	0	(4,755)	(4,755)	0	(4,755)
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge, net															0	0	0	(8)	(8)	0	(8)
Increase in noncontrolling interest															$ 0	0	0	0	0	1,447	1,447
Balance (in shares) at Mar. 31, 2020															51,036
Balance at Mar. 31, 2020															$ 51	$ 915,139	$ 507,537	$ (13,662)	$ 1,409,065	$ 124,586	$ 1,533,651

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Retained Earnings [Member]
Cash dividend declared, per share (in dollars per share)	$ 0.11	$ 0.11
Amortization of unrealized gains, tax		$ 18
Change in respect of derivative instruments designated for cash flow hedge, tax		24
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment, tax		$ 0

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flow (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 29,906	$ 28,130
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	36,952	36,901
Accretion of asset retirement obligation	772	651
Stock-based compensation	1,989	2,360
Amortization of deferred lease income	0	(775)
Income attributable to sale of tax benefits, net of interest expense	(2,087)	(4,314)
Equity in losses (earnings) of investees	735	(1,047)
Mark-to-market of derivative instruments	(561)	(1,209)
Loss on disposal of property, plant and equipment	88	377
Loss (gain) on severance pay fund asset	535	(330)
Deferred income tax provision	15,123	10,469
Liability for unrecognized tax benefits	(83)	713
Changes in operating assets and liabilities, net of businesses acquired:
Receivables	(25,008)	(1,119)
Costs and estimated earnings in excess of billings on uncompleted contracts	16,060	12,368
Inventories	842	2,018
Prepaid expenses and other	1,211	(2,105)
Change in operating lease right of use asset	784	1,698
Deposits and other	343	26
Accounts payable and accrued expenses	350	(4,271)
Billings in excess of costs and estimated earnings on uncompleted contracts	3,182	(2,894)
Liabilities for severance pay	(543)	406
Change in operating lease liabilities	(734)	0
Other long-term liabilities	(100)	(616)
Net cash provided by operating activities	79,756	77,437
Cash flows from investing activities:
Capital expenditures	(80,375)	(51,303)
Investment in unconsolidated companies	(358)	0
Decrease (increase) in severance pay fund asset, net of payments made to retired employees	(87)	359
Net cash used in investing activities	(80,820)	(50,944)
Cash flows from financing activities:
Proceeds from long-term loans, net of transaction costs	0	91,500
Repayments of commercial paper	(41,725)	0
Proceeds from revolving credit lines with banks	872,900	914,700
Repayment of revolving credit lines with banks	(642,950)	(1,012,800)
Cash received from noncontrolling interest	6,270	3,346
Repayments of long-term debt	(16,416)	(15,757)
Cash paid to noncontrolling interest	(3,279)	(4,459)
Payments under finance lease obligations	(675)	(767)
Deferred debt issuance costs	(416)	(1,223)
Cash dividends paid	(5,614)	(5,579)
Net cash provided by (used in) financing activities	168,095	(31,039)
Effect of exchange rate changes	(365)	(485)
Net change in cash and cash equivalents and restricted cash and cash equivalents	166,666	(5,031)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	153,110	177,495
Cash and cash equivalents and restricted cash and cash equivalents at end of period	319,776	172,464
Supplemental non-cash investing and financing activities:
Increase (decrease) in accounts payable related to purchases of property, plant and equipment	(1,436)	153
Right of use assets obtained in exchange for new lease liabilities	$ 1,194	$ 2,154

Note 1 - General and Basis of P

Note 1 - General and Basis of Presentation	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE 1 These unaudited condensed consolidated interim financial statements of Ormat Technologies, Inc. and its subsidiaries (collectively, the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial statements. Accordingly, they do not March 31, 2020, three March 31, 2020 2019. The financial data and other information disclosed in the notes to the condensed consolidated financial statements related to these periods are unaudited. The results for the periods presented are not These condensed unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10 December 31, 2019. December 31, 2019 December 31, 2019 not Dollar amounts, except per share data, in the notes to these financial statements are rounded to the closest $1,000. COVID- 19 In March 2020, 19" 19 19 may no 19 no Puna On May 3, 2018, 38 three March April 2020, May 2018 first 2020, three March 31, 2020. not As of May 2020, two one fourth 29 In December 2019, 2052 46MW no 8MW 2022. The Company continues to assess the accounting implications of this event on the assets and liabilities on its consolidated balance sheets and whether an impairment will be required. Any significant damage to the geothermal resource or continued shut-down following the lava event at the Puna facilities could have an adverse impact on the power plant's electricity generation and availability, which in turn could have a material adverse impact on the Company's business and results of operations. Write-offs of unsuccessful exploration activities There were no three March 31, 2020 2019. 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 as reported on the balance sheet to the total of the same amounts shown on the statement of cash flows: March 31, December 31, March 31, 2020 2019 2019 (Dollars in thousands) Cash and cash equivalents $ 231,149 $ 71,173 $ 79,366 Restricted cash and cash equivalents 88,627 81,937 93,098 Total Cash and cash equivalents and restricted cash and cash equivalents $ 319,776 $ 153,110 $ 172,464 Concentration of credit risk Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of temporary cash investments and accounts receivable. The Company places its temporary cash investments with high credit quality financial institutions located in the United States (“U.S.”) and in foreign countries. At March 31, 2020 December 31, 2019, ten $250,000 March 31, 2020 December 31, 2019, At March 31, 2020 December 31, 2019, March 31, 2020 December 31, 2019, 10% three March 31, 2020 2019, Sierra Pacific Power Company and Nevada Power Company (subsidiaries of NV Energy, Inc.) accounted for 19.2% and 18.3% of the Company’s total revenues for the three March 31, 2020 2019, Southern California Public Power Authority (“SCPPA”) accounted for 18.7% and 19.4% of the Company’s total revenues for the three March 31, 2020 2019, Kenya Power and Lighting Co. Ltd. ("KPLC") accounted for 15.4% and 15.3% of the Company’s total revenues for the three March 31, 2020 2019, The Company has historically been able to collect on substantially all of its receivable balances. As of March 31, 2020, April 2020. In Honduras, the Company has been able to collect current charges from Empresa Nacional de Energía Eléctrica (“ENEE”) starting in May 2019. 19 may March 2020. March 31, 2020, October 2018 April 2019, none The Company may 19 Revenues from Contracts with Customers Contract assets related to our Product segment reflect revenue recognized and performance obligations satisfied in advance of customer billing. Contract liabilities related to the Company's Product segment reflect payments received 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 March 31, 2020 December 31, 2019 March 31, December 31, 2020 2019 (Dollars in thousands) Contract assets (*) $ 22,305 $ 38,365 Contract liabilities (*) (5,937 ) (2,755 ) Contract assets, net $ 16,368 $ 35,610 (*) 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 fully recognized as product revenues during the three March 31, 2020 On March 31, 2020, not Leases in which the Company is a lessor The table below presents the lease income recognized as a lessor: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Lease income relating to lease payments of operating leases $ 126,076 $ 125,908 Total $ 126,076 $ 125,908

Note 2 - New Accounting Pronoun

Note 2 - New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	NOTE 2 New accounting pronouncements effective in the three March 31, 2020 Financial Instruments—Credit Losses In June 2016, 2016 13, 326 November 2018, 2018 19, 326, 2018 19 not January 1, 2020, not may January 1, 2020 19 19 not The following table describes the changes in the allowance for expected credit losses for the three March 31, 2020 ( (Dollars in thousands) Beginning balance of the allowance for expected credit losses $ 755 Current period provision for expected credit losses 24 Ending balance of the allowance for expected credit losses $ 779 New accounting pronouncements effective in future periods Accounting for Income Taxes In December 2019, 2019 12, 740 2019 12 740. December 15, 2020 not 2019 12 March 31, 2020. not 2019 12 Reference Rate Reform In March 2020, 2020 04, 848 December 31, 2021. 470, March 12, 2020 December 31, 2022. may March 12, 2020, March 12, 2020, not

Note 3 - Inventories

Note 3 - Inventories	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	NOTE 3 Inventories consist of the following: March 31, December 31, 2020 2019 (Dollars in thousands) Raw materials and purchased parts for assembly $ 20,559 $ 21,942 Self-manufactured assembly parts and finished products 13,548 13,007 Total inventories $ 34,107 $ 34,949

Note 4 - Fair Value of Financia

Note 4 - Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 4— The fair value measurement guidance clarifies that fair value is an exit price, representing the amount that would be received upon selling an asset or paid upon transferring a liability in an orderly transaction between market participants. 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 not Level 3 no The following table sets forth certain fair value information at March 31, 2020 December 31, 2019 March 31, 2020 Fair Value Carrying Value at March 31, 2020 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Current assets: Cash equivalents (including restricted cash accounts) $ 36,978 $ 36,978 $ 36,978 $ — $ — Derivatives: Contingent receivable (1) 99 99 — — 99 Currency forward contracts (2) 928 928 — 928 — Liabilities: Current liabilities: Derivatives: Contingent payables (1) (3,272 ) (3,272 ) — — (3,272 ) $ 34,733 $ 34,733 $ 36,978 $ 928 $ (3,173 ) December 31, 2019 Fair Value Carrying Value at December 31, 2019 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets Current assets: Cash equivalents (including restricted cash accounts) $ 28,316 $ 28,316 $ 28,316 $ — $ — Derivatives: Contingent receivables (1) 102 102 — — 102 Currency forward contracts (2) 362 362 — 362 — Liabilities: Current liabilities: Derivatives: Contingent payable (1) (3,359 ) (3,359 ) — — (3,359 ) $ 25,421 $ 25,421 $ 28,316 $ 362 $ (3,257 ) 1. These amounts relate to contingent receivables and payables relating to acquisition of the Guadeloupe power plant, valued primarily based on unobservable inputs and are included within “Prepaid expenses and other”, “Accounts payable and accrued expenses” and “Other long-term liabilities” on March 31, 2020 December 31, 2019 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 “Prepaid expenses and other” and “Accounts payable and accrued expenses”, as applicable, on March 31, 2020 December 31, 2019, The amounts set forth in the tables above include investments in debt instruments and money market funds (which are included in cash equivalents). Those securities and deposits are classified within Level 1 The following table presents the amounts of gain (loss) recognized in the consolidated statements of operations and comprehensive income on derivative instruments not Amount of recognized gain (loss) Derivatives not designated as hedging instruments Location of recognized gain (loss) Three Months Ended March 31, 2020 2019 Currency forward contracts Derivative and foreign currency transaction gains (losses) 1,090 1,083 $ 1,090 $ 1,083 The foregoing forward transactions were not There were no 1, 2 3 three March 31, 2020. The fair value of the Company’s long-term debt approximates its carrying amount, except for the following: Fair Value Carrying Amount March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 (Dollars in millions) (Dollars in millions) Olkaria III Loan - OPIC $ 206.5 $ 202.1 $ 188.1 $ 192.6 Olkaria III plant 4 Loan - DEG 2 46.2 43.8 42.5 42.5 Olkaria III plant 1 Loan - DEG 3 40.8 38.8 37.1 37.1 Platanares Loan - OPIC 118.9 115.3 102.4 104.5 Amatitlan Loan 25.5 26.4 25.4 26.3 Senior Secured Notes: OFC 2 LLC ("OFC 2") 218.1 210.9 198.4 203.0 Don A. Campbell 1 ("DAC 1") 81.7 78.5 76.6 78.2 USG Prudential - NV 32.8 30.6 28.3 28.4 USG Prudential - ID 18.3 18.6 18.9 19.6 USG DOE 46.2 45.0 39.4 40.8 Senior Unsecured Bonds 207.7 205.7 204.3 204.3 Senior Unsecured Loan 169.0 161.3 150.0 150.0 Plumstriker 21.4 21.7 21.3 21.6 Other long-term debt 16.2 16.3 16.6 17.4 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. The fair value of revolving lines of credit is determined using a comparison of market-based price sources that are reflective of similar credit ratings to those of the Company. As disclosed above under Note 1 19 may may 19 may The carrying value of financial instruments such as revolving lines of credit and deposits approximates fair value. The following table presents the fair value of financial instruments as of March 31, 2020: Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III - OPIC — — 206.5 206.5 Olkaria III plant 4 Loan - DEG 2 — — 46.2 46.2 Olkaria III plant 1 Loan - DEG 3 — — 40.8 40.8 Platanares Loan - OPIC — — 118.9 118.9 Amatitlan Loan — 25.5 — 25.5 Senior Secured Notes: OFC 2 Senior Secured Notes — — 218.1 218.1 DAC 1 Senior Secured Notes — — 81.7 81.7 USG Prudential - NV — — 32.8 32.8 USG Prudential - ID — — 18.3 18.3 USG DOE — — 46.2 46.2 Senior Unsecured Bonds — — 207.7 207.7 Senior Unsecured Loan — — 169.0 169.0 Plumstriker — 21.4 — 21.4 Other long-term debt — — 16.2 16.2 Commercial paper — 8.3 — 8.3 Revolving lines of credit — 270.5 — 270.5 Deposits 11.8 — — 11.8 The following table presents the fair value of financial instruments as of December 31, 2019: Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III Loan - OPIC — — 202.1 202.1 Olkaria IV - DEG 2 — — 43.8 43.8 Olkaria IV - DEG 3 — — 38.8 38.8 Platanares Loan - OPIC — — 115.3 115.3 Amatitlan Loan — 26.4 — 26.4 Senior Secured Notes: OFC 2 Senior Secured Notes — — 210.9 210.9 DAC 1 Senior Secured Notes — — 78.5 78.5 USG Prudential - NV — — 30.6 30.6 USG Prudential - ID — — 18.6 18.6 USG DOE — — 45.0 45.0 Senior Unsecured Bonds — — 205.7 205.7 Senior Unsecured Loan — — 161.3 161.3 Plumstriker — 21.7 — 21.7 Other long-term debt — — 16.3 16.3 Commercial paper — 50.0 — 50.0 Revolving lines of credit — 40.6 — 40.6 Deposits 12.2 — — 12.2

Note 5 - Stock-based Compensati

Note 5 - Stock-based Compensation	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	NOTE 5 No 2018 three March 31, 2020.

Note 6 - Interest Expense, Net

Note 6 - Interest Expense, Net	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Interest Expense Disclosure [Text Block]	NOTE 6 The components of interest expense are as follows: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Interest related to sale of tax benefits $ 2,324 $ 3,661 Interest expense 17,166 17,562 Less — amount capitalized (2,217 ) — Total interest expense, net $ 17,273 $ 21,223

Note 7 - Earnings Per Share

Note 7 - Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 7 Basic earnings per share attributable to the Company’s stockholders is computed by dividing net income or loss 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 (in thousands): Three Months Ended March 31, 2020 2019 Weighted average number of shares used in computation of basic earnings per share add: 51,036 50,709 Additional shares from the assumed exercise of employee stock options 490 303 Weighted average number of shares used in computation of diluted earnings per share 51,526 51,012 The number of stock-based awards that could potentially dilute future earnings per share and that were not three March 31, 2020 2019,

Note 8 - Business Segments

Note 8 - Business Segments	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 8 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 other countries around the world and sell the electricity they generate. • Under the Product segment, the Company designs, manufactures and sells equipment for geothermal and recovered energy-based electricity generation and remote power units and provide services relating to the engineering, procurement and construction of geothermal and recovered energy-based power plants. • Under the ESMS segment the Company provides energy storage, demand response and energy management related services as well as services relating to the engineering, procurement, construction, operation and maintenance of energy storage units mainly through its Viridity business. Transfer prices between the operating segments are determined based 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 the Company's disaggregated revenues from contracts with customers: Electricity Product ESMS Consolidated (Dollars in thousands) Three Months Ended March 31, 2020: Revenues from external customers: United States (1) $ 91,692 $ 398 $ 1,846 $ 93,936 Foreign (2) 51,164 47,013 — 98,177 Net revenue from external customers 142,856 47,411 1,846 192,113 Intersegment revenue — 8,656 — 8,656 Operating income (loss) 58,630 3,872 (1,445 ) 61,057 Segment assets at period end (3) (*) 3,139,603 230,831 75,179 3,445,613 * Including unconsolidated investments 76,008 — — 76,008 Three Months Ended March 31, 2019: Revenues from external customers: United States (1) $ 91,528 $ 11,243 $ 4,002 $ 106,773 Foreign (2) 51,380 40,885 — 92,265 Net revenue from external customers 142,908 52,128 4,002 199,038 Intersegment revenue — 18,261 — 18,261 Operating income 51,551 4,252 (2,078 ) 53,725 Segment assets at period end (3) (*) 2,950,444 125,248 67,522 3,143,214 * Including unconsolidated investments 71,885 — — 71,885 ( 1 Electricity segment revenues in the United States are all accounted under lease accounting except for $16.8 million and $17.0 million in the three March 31, 2020 2019, 606. 606. ( 2 Electricity segment revenues in foreign countries are all accounted under lease accounting. Product segment revenues in foreign countries are accounted under ASC 606. ( 3 Electricity segment assets include goodwill in the amount of $20.0 million and $20.1 million as of March 31, 2020 2019, No March 31, 2020 2019. Reconciling information between reportable segments and the Company’s consolidated totals is shown in the following table: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Revenues: Total segment revenues $ 192,113 $ 199,038 Intersegment revenues 8,656 18,261 Elimination of intersegment revenues (8,656 ) (18,261 ) Total consolidated revenues $ 192,113 $ 199,038 Operating income: Operating income $ 61,057 $ 53,725 Interest income 402 293 Interest expense, net (17,273 ) (21,223 ) Derivatives and foreign currency transaction gains (losses) 393 472 Income attributable to sale of tax benefits 4,132 7,764 Other non-operating income (expense), net 78 91 Total consolidated income before income taxes and equity in income of investees $ 48,789 $ 41,122

Note 9 - Commitments and Contin

Note 9 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 9 • On May 21, 2018, 11 August 3, 2017 May 13, 2018". 31 1 38C 1 2017 2 May 16, 2018, May 11, 2018 2017 • On June 11, 2018, August 8, 2017 May 15, 2018 May 13, 2019. 10 10b 5 20 10 December 31, 2016 2017, 10 nine September 30, 2017 December 6, 2019 March 23, 2020, not • On September 11, 2018, October 22, 2018, four 14 2018 January 24, 2019, not • Following the announcement of the Company’s acquisition of U.S. Geothermal Inc. ("USG"), a number of putative shareholder class action complaints were initially filed on behalf of USG shareholders between March 8, 2018 March 30, 2018 No. 2018 0177 Mar. 12, 2018). May 24, 2018 March 27, 2020, not • On March 29, 2016, 27th 11th April 16, 2020, 11th 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

Note 10 - Income Taxes

Note 10 - Income Taxes	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 10 The Company’s effective tax rate expense (benefit) for the three March 31, 2020 2019 three March 31, 2020 In response to the COVID- 19 March 27, 2020 three March 31, 2020, no 19 Tax Audit in Kenya The Company received three 2019 2013 2017. first two first second May 8, 2020 second second first two third The Company is currently at different stages of discussions with the KRA on the matters included in the KRA assessments, objection decisions and preliminary findings as described above. The Company believes its tax positions for the issues raised during the audit period is more-likely-than- not March 31, 2020, not first

Note 11 - Subsequent Events

Note 11 - Subsequent Events	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 11 Cash Dividend On May 8, 2020, May 21, 2020 June 2, 2020 Senior Unsecured Bonds On April 6, 2020, 3 3 3 September 2022 3 Additionally, on April 20, 2020, 3 3 3 September 2022 3 Senior Unsecured Loan In April 2020, second March 22, 2018. September 15, 2021 September 15, 2028. one March 15, 2029. COVID- 19 On April 17, 2020, 19 Additionally, on April 30, 2020, 19. Energy storage assets portfolio purchase transaction In April 2020, February 2020 20MW third 2020. 2020

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Effect of COVID-19 Pandemic, Policy [Text Block]	COVID- 19 In March 2020, 19" 19 19 may no 19 no
Public Utilities, Policy [Policy Text Block]	Puna On May 3, 2018, 38 three March April 2020, May 2018 first 2020, three March 31, 2020. not As of May 2020, two one fourth 29 In December 2019, 2052 46MW no 8MW 2022. The Company continues to assess the accounting implications of this event on the assets and liabilities on its consolidated balance sheets and whether an impairment will be required. Any significant damage to the geothermal resource or continued shut-down following the lava event at the Puna facilities could have an adverse impact on the power plant's electricity generation and availability, which in turn could have a material adverse impact on the Company's business and results of operations.
Exploratory Drilling Costs Capitalization and Impairment, Policy [Policy Text Block]	Write-offs of unsuccessful exploration activities There were no three March 31, 2020 2019.
Cash and Cash Equivalents, Policy [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 as reported on the balance sheet to the total of the same amounts shown on the statement of cash flows: March 31, December 31, March 31, 2020 2019 2019 (Dollars in thousands) Cash and cash equivalents $ 231,149 $ 71,173 $ 79,366 Restricted cash and cash equivalents 88,627 81,937 93,098 Total Cash and cash equivalents and restricted cash and cash equivalents $ 319,776 $ 153,110 $ 172,464
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of credit risk Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of temporary cash investments and accounts receivable. The Company places its temporary cash investments with high credit quality financial institutions located in the United States (“U.S.”) and in foreign countries. At March 31, 2020 December 31, 2019, ten $250,000 March 31, 2020 December 31, 2019, At March 31, 2020 December 31, 2019, March 31, 2020 December 31, 2019, 10% three March 31, 2020 2019, Sierra Pacific Power Company and Nevada Power Company (subsidiaries of NV Energy, Inc.) accounted for 19.2% and 18.3% of the Company’s total revenues for the three March 31, 2020 2019, Southern California Public Power Authority (“SCPPA”) accounted for 18.7% and 19.4% of the Company’s total revenues for the three March 31, 2020 2019, Kenya Power and Lighting Co. Ltd. ("KPLC") accounted for 15.4% and 15.3% of the Company’s total revenues for the three March 31, 2020 2019, The Company has historically been able to collect on substantially all of its receivable balances. As of March 31, 2020, April 2020. In Honduras, the Company has been able to collect current charges from Empresa Nacional de Energía Eléctrica (“ENEE”) starting in May 2019. 19 may March 2020. March 31, 2020, October 2018 April 2019, none The Company may 19
Revenue [Policy Text Block]	Revenues from Contracts with Customers Contract assets related to our Product segment reflect revenue recognized and performance obligations satisfied in advance of customer billing. Contract liabilities related to the Company's Product segment reflect payments received 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 March 31, 2020 December 31, 2019 March 31, December 31, 2020 2019 (Dollars in thousands) Contract assets (*) $ 22,305 $ 38,365 Contract liabilities (*) (5,937 ) (2,755 ) Contract assets, net $ 16,368 $ 35,610 (*) 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 fully recognized as product revenues during the three March 31, 2020 On March 31, 2020, not
Lessor, Leases [Policy Text Block]	Leases in which the Company is a lessor The table below presents the lease income recognized as a lessor: Three Months Ended March 31, 2020 2019 (Dollars in thousands) Lease income relating to lease payments of operating leases $ 126,076 $ 125,908 Total $ 126,076 $ 125,908

Note 1 - General and Basis of_2

Note 1 - General and Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Cash and Cash Equivalents [Table Text Block]	March 31, December 31, March 31, 2020 2019 2019 (Dollars in thousands) Cash and cash equivalents $ 231,149 $ 71,173 $ 79,366 Restricted cash and cash equivalents 88,627 81,937 93,098 Total Cash and cash equivalents and restricted cash and cash equivalents $ 319,776 $ 153,110 $ 172,464
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	March 31, December 31, 2020 2019 (Dollars in thousands) Contract assets (*) $ 22,305 $ 38,365 Contract liabilities (*) (5,937 ) (2,755 ) Contract assets, net $ 16,368 $ 35,610
Operating Lease, Lease Income [Table Text Block]	Three Months Ended March 31, 2020 2019 (Dollars in thousands) Lease income relating to lease payments of operating leases $ 126,076 $ 125,908 Total $ 126,076 $ 125,908

Note 2 - New Accounting Prono_2

Note 2 - New Accounting Pronouncements (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Accounts Receivable, Allowance for Credit Loss [Table Text Block]	(Dollars in thousands) Beginning balance of the allowance for expected credit losses $ 755 Current period provision for expected credit losses 24 Ending balance of the allowance for expected credit losses $ 779

Note 3 - Inventories (Tables)

Note 3 - Inventories (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Inventory, Current [Table Text Block]	March 31, December 31, 2020 2019 (Dollars in thousands) Raw materials and purchased parts for assembly $ 20,559 $ 21,942 Self-manufactured assembly parts and finished products 13,548 13,007 Total inventories $ 34,107 $ 34,949

Note 4 - Fair Value of Financ_2

Note 4 - Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	March 31, 2020 Fair Value Carrying Value at March 31, 2020 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Current assets: Cash equivalents (including restricted cash accounts) $ 36,978 $ 36,978 $ 36,978 $ — $ — Derivatives: Contingent receivable (1) 99 99 — — 99 Currency forward contracts (2) 928 928 — 928 — Liabilities: Current liabilities: Derivatives: Contingent payables (1) (3,272 ) (3,272 ) — — (3,272 ) $ 34,733 $ 34,733 $ 36,978 $ 928 $ (3,173 ) December 31, 2019 Fair Value Carrying Value at December 31, 2019 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets Current assets: Cash equivalents (including restricted cash accounts) $ 28,316 $ 28,316 $ 28,316 $ — $ — Derivatives: Contingent receivables (1) 102 102 — — 102 Currency forward contracts (2) 362 362 — 362 — Liabilities: Current liabilities: Derivatives: Contingent payable (1) (3,359 ) (3,359 ) — — (3,359 ) $ 25,421 $ 25,421 $ 28,316 $ 362 $ (3,257 )
Derivative Instruments, Gain (Loss) [Table Text Block]	Amount of recognized gain (loss) Derivatives not designated as hedging instruments Location of recognized gain (loss) Three Months Ended March 31, 2020 2019 Currency forward contracts Derivative and foreign currency transaction gains (losses) 1,090 1,083 $ 1,090 $ 1,083
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]	Fair Value Carrying Amount March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 (Dollars in millions) (Dollars in millions) Olkaria III Loan - OPIC $ 206.5 $ 202.1 $ 188.1 $ 192.6 Olkaria III plant 4 Loan - DEG 2 46.2 43.8 42.5 42.5 Olkaria III plant 1 Loan - DEG 3 40.8 38.8 37.1 37.1 Platanares Loan - OPIC 118.9 115.3 102.4 104.5 Amatitlan Loan 25.5 26.4 25.4 26.3 Senior Secured Notes: OFC 2 LLC ("OFC 2") 218.1 210.9 198.4 203.0 Don A. Campbell 1 ("DAC 1") 81.7 78.5 76.6 78.2 USG Prudential - NV 32.8 30.6 28.3 28.4 USG Prudential - ID 18.3 18.6 18.9 19.6 USG DOE 46.2 45.0 39.4 40.8 Senior Unsecured Bonds 207.7 205.7 204.3 204.3 Senior Unsecured Loan 169.0 161.3 150.0 150.0 Plumstriker 21.4 21.7 21.3 21.6 Other long-term debt 16.2 16.3 16.6 17.4
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]	Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III - OPIC — — 206.5 206.5 Olkaria III plant 4 Loan - DEG 2 — — 46.2 46.2 Olkaria III plant 1 Loan - DEG 3 — — 40.8 40.8 Platanares Loan - OPIC — — 118.9 118.9 Amatitlan Loan — 25.5 — 25.5 Senior Secured Notes: OFC 2 Senior Secured Notes — — 218.1 218.1 DAC 1 Senior Secured Notes — — 81.7 81.7 USG Prudential - NV — — 32.8 32.8 USG Prudential - ID — — 18.3 18.3 USG DOE — — 46.2 46.2 Senior Unsecured Bonds — — 207.7 207.7 Senior Unsecured Loan — — 169.0 169.0 Plumstriker — 21.4 — 21.4 Other long-term debt — — 16.2 16.2 Commercial paper — 8.3 — 8.3 Revolving lines of credit — 270.5 — 270.5 Deposits 11.8 — — 11.8 Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III Loan - OPIC — — 202.1 202.1 Olkaria IV - DEG 2 — — 43.8 43.8 Olkaria IV - DEG 3 — — 38.8 38.8 Platanares Loan - OPIC — — 115.3 115.3 Amatitlan Loan — 26.4 — 26.4 Senior Secured Notes: OFC 2 Senior Secured Notes — — 210.9 210.9 DAC 1 Senior Secured Notes — — 78.5 78.5 USG Prudential - NV — — 30.6 30.6 USG Prudential - ID — — 18.6 18.6 USG DOE — — 45.0 45.0 Senior Unsecured Bonds — — 205.7 205.7 Senior Unsecured Loan — — 161.3 161.3 Plumstriker — 21.7 — 21.7 Other long-term debt — — 16.3 16.3 Commercial paper — 50.0 — 50.0 Revolving lines of credit — 40.6 — 40.6 Deposits 12.2 — — 12.2

Note 6 - Interest Expense, Net

Note 6 - Interest Expense, Net (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Other Nonoperating Expense, by Component [Table Text Block]	Three Months Ended March 31, 2020 2019 (Dollars in thousands) Interest related to sale of tax benefits $ 2,324 $ 3,661 Interest expense 17,166 17,562 Less — amount capitalized (2,217 ) — Total interest expense, net $ 17,273 $ 21,223

Note 7 - Earnings Per Share (Ta

Note 7 - Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Weighted Average Number of Shares [Table Text Block]	Three Months Ended March 31, 2020 2019 Weighted average number of shares used in computation of basic earnings per share add: 51,036 50,709 Additional shares from the assumed exercise of employee stock options 490 303 Weighted average number of shares used in computation of diluted earnings per share 51,526 51,012

Note 8 - Business Segments (Tab

Note 8 - Business Segments (Tables)	3 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Electricity Product ESMS Consolidated (Dollars in thousands) Three Months Ended March 31, 2020: Revenues from external customers: United States (1) $ 91,692 $ 398 $ 1,846 $ 93,936 Foreign (2) 51,164 47,013 — 98,177 Net revenue from external customers 142,856 47,411 1,846 192,113 Intersegment revenue — 8,656 — 8,656 Operating income (loss) 58,630 3,872 (1,445 ) 61,057 Segment assets at period end (3) (*) 3,139,603 230,831 75,179 3,445,613 * Including unconsolidated investments 76,008 — — 76,008 Three Months Ended March 31, 2019: Revenues from external customers: United States (1) $ 91,528 $ 11,243 $ 4,002 $ 106,773 Foreign (2) 51,380 40,885 — 92,265 Net revenue from external customers 142,908 52,128 4,002 199,038 Intersegment revenue — 18,261 — 18,261 Operating income 51,551 4,252 (2,078 ) 53,725 Segment assets at period end (3) (*) 2,950,444 125,248 67,522 3,143,214 * Including unconsolidated investments 71,885 — — 71,885
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Three Months Ended March 31, 2020 2019 (Dollars in thousands) Revenues: Total segment revenues $ 192,113 $ 199,038 Intersegment revenues 8,656 18,261 Elimination of intersegment revenues (8,656 ) (18,261 ) Total consolidated revenues $ 192,113 $ 199,038 Operating income: Operating income $ 61,057 $ 53,725 Interest income 402 293 Interest expense, net (17,273 ) (21,223 ) Derivatives and foreign currency transaction gains (losses) 393 472 Income attributable to sale of tax benefits 4,132 7,764 Other non-operating income (expense), net 78 91 Total consolidated income before income taxes and equity in income of investees $ 48,789 $ 41,122

Note 1 - General and Basis of_3

Note 1 - General and Basis of Presentation 1 (Details Textual) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2020USD ($)	Apr. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Exploration Abandonment and Impairment Expense			$ 0	$ 0
Cash, FDIC Insured Amount			14,400		$ 12,900
Cash, Uninsured Amount			228,800		84,800
Accounts Receivable, after Allowance for Credit Loss, Current, Total			168,924		$ 154,525
Product [Member]
Revenue, Remaining Performance Obligation, Amount			$ 96,500
Revenue, Remaining Performance Obligation, Percentage			100.00%
Kenya Power and Lighting Co LTD [Member]
Accounts Receivable, Past Due			$ 38,600
Accounts Receivable, Past Due, Average Number of Days Overdue			61
Kenya Power and Lighting Co LTD [Member] | Subsequent Event [Member]
Proceeds, Overdue Accounts Receivable	$ 8,000
ENNE [Member]
Accounts Receivable, Past Due			$ 20,100
Accounts Receivable, Credit Loss Expense (Reversal)			$ 0
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Primary Customers [Member]
Concentration Risk, Percentage			50.00%		58.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Sierra Pacific Power Company And Nevada Power Company [Member]
Concentration Risk, Percentage			19.20%	18.30%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Southern California Public Power Authority [Member]
Concentration Risk, Percentage			18.70%	19.40%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Kenya Power and Lighting Co LTD [Member]
Concentration Risk, Percentage			15.40%	15.30%
Non-US [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total			$ 135,100		$ 118,800
Electricity Segment [Member] | Puna Geothermal Power Plant [Member]
Proceeds from Insurance Settlement, Operating Activities		$ 3,000
Electricity Segment [Member] | Puna Geothermal Power Plant [Member] | Cost of Sales [Member]
Proceeds from Insurance Settlement, Operating Activities			$ 4,900

Note 1 - General and Basis of_4

Note 1 - General and Basis of Presentation 2 (Details Textual)	Mar. 31, 2020
Product [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	24 months

Note 1 - General and Basis of_5

Note 1 - General and Basis of Presentation - Cash and Restricted Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 231,149	$ 71,173	$ 79,366
Restricted cash and cash equivalents	88,627	81,937	93,098
Total Cash and cash equivalents and restricted cash and cash equivalents	$ 319,776	$ 153,110	$ 172,464	$ 177,495

Note 1 - General and Basis of_6

Note 1 - General and Basis of Presentation - Contract Assets (Liabilities) (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Contract assets (*)	[1]	$ 22,305	$ 38,365
Contract liabilities (*)	[1]	(5,937)	(2,755)
Contract assets, net		$ 16,368	$ 35,610
[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.

Note 1 - General and Basis of_7

Note 1 - General and Basis of Presentation - Lease Income as Lessor (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lease income relating to lease payments of operating leases	$ 126,076	$ 125,908
Total	$ 126,076	$ 125,908

Note 2 - New Accounting Prono_3

Note 2 - New Accounting Pronouncements (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance	$ 1,533,651		$ 1,515,410	$ 1,462,995	$ 1,445,096
Cumulative Effect, Period of Adoption, Adjustment [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance			(755)		(58)
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance	$ 507,537		487,873	$ 442,531	422,222
Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance			$ (755)		$ (58)
Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance		$ (800)

Note 2 - New Accounting Prono_4

Note 2 - New Accounting Pronouncements - Changes in the Allowance for Expected Credit Losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Beginning balance of the allowance for expected credit losses	$ 0
Ending balance of the allowance for expected credit losses	779
Accounting Standards Update 2016-13 [Member]
Beginning balance of the allowance for expected credit losses	755
Current period provision for expected credit losses	24
Ending balance of the allowance for expected credit losses	$ 779

Note 3 - Inventories - Inventor

Note 3 - Inventories - Inventories, Current (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Raw materials and purchased parts for assembly	$ 20,559	$ 21,942
Self-manufactured assembly parts and finished products	13,548	13,007
Total inventories	$ 34,107	$ 34,949

Note 4 - Fair Value of Financ_3

Note 4 - Fair Value of Financial Instruments - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Reported Value Measurement [Member]
Cash equivalents (including restricted cash accounts)		$ 36,978	$ 28,316
Fair Value, Net Asset (Liability), Total		34,733	25,421
Reported Value Measurement [Member] | Contingent Receivable [Member]
Derivative Asset, Current	[1]	99	102
Reported Value Measurement [Member] | Currency Forward Contracts [Member]
Derivative Asset, Current	[2]	928	362
Reported Value Measurement [Member] | Contingent Payable [Member]
Derivative Liability, Current	[1]	(3,272)	(3,359)
Estimate of Fair Value Measurement [Member]
Cash equivalents (including restricted cash accounts)		36,978	28,316
Fair Value, Net Asset (Liability), Total		34,733	25,421
Estimate of Fair Value Measurement [Member] | Contingent Receivable [Member]
Derivative Asset, Current	[1]	99	102
Estimate of Fair Value Measurement [Member] | Currency Forward Contracts [Member]
Derivative Asset, Current	[2]	928	362
Estimate of Fair Value Measurement [Member] | Contingent Payable [Member]
Derivative Liability, Current	[1]	(3,272)	(3,359)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents (including restricted cash accounts)		36,978	28,316
Fair Value, Net Asset (Liability), Total		36,978	28,316
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Contingent Receivable [Member]
Derivative Asset, Current	[1]	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Currency Forward Contracts [Member]
Derivative Asset, Current	[2]	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Contingent Payable [Member]
Derivative Liability, Current	[1]	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents (including restricted cash accounts)		0	0
Fair Value, Net Asset (Liability), Total		928	362
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Contingent Receivable [Member]
Derivative Asset, Current	[1]	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Currency Forward Contracts [Member]
Derivative Asset, Current	[2]	928	362
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Contingent Payable [Member]
Derivative Liability, Current	[1]	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents (including restricted cash accounts)		0	0
Fair Value, Net Asset (Liability), Total		(3,173)	(3,257)
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Contingent Receivable [Member]
Derivative Asset, Current	[1]	99	102
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Currency Forward Contracts [Member]
Derivative Asset, Current	[2]	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Contingent Payable [Member]
Derivative Liability, Current	[1]	$ (3,272)	$ (3,359)
[1]	These amounts relate to contingent receivables and payables relating to acquisition of the Guadeloupe power plant, valued primarily based on unobservable inputs and are included within "Prepaid expenses and other", "Accounts payable and accrued expenses" and "Other long-term liabilities" on March 31, 2020 and December 31, 2019 in the consolidated balance sheets with the corresponding gain or loss being recognized within "Derivatives and foreign currency transaction gains (losses)" in the condensed consolidated statements of operations and comprehensive income.
[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 "Prepaid expenses and other" and "Accounts payable and accrued expenses", as applicable, on March 31, 2020 and December 31, 2019, in the condensed 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 4 - Fair Value of Financ_4

Note 4 - Fair Value of Financial Instruments - Amounts of Gain (Loss) Recognized in Condensed Consolidated Statements on Derivative Instruments Not Designated as Hedges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Amount of gain (loss) recognized	$ 1,090	$ 1,083
Foreign Currency Gain (Loss) [Member] | Currency Forward Contracts [Member]
Amount of gain (loss) recognized	$ 1,090	$ 1,083

Note 4 - Fair Value of Financ_5

Note 4 - Fair Value of Financial Instruments - Fair Value of Long-term Debt Approximates Its Carrying Amount, Exceptions (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Estimate of Fair Value Measurement [Member]
Other long-term debt	$ 16.2	$ 16.3
Reported Value Measurement [Member]
Other long-term debt	16.6	17.4
Olkaria III OPIC [Member]
Loans	206.5	202.1
Olkaria III OPIC [Member] | Estimate of Fair Value Measurement [Member]
Loans	206.5	202.1
Olkaria III OPIC [Member] | Reported Value Measurement [Member]
Loans	188.1	192.6
Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	46.2	43.8
Olkaria III Plant 4 Loan - DEG 2 [Member] | Estimate of Fair Value Measurement [Member]
Loans	46.2	43.8
Olkaria III Plant 4 Loan - DEG 2 [Member] | Reported Value Measurement [Member]
Loans	42.5	42.5
Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	40.8	38.8
Olkaria III plant 1 Loan - DEG 3 [Member] | Estimate of Fair Value Measurement [Member]
Loans	40.8	38.8
Olkaria III plant 1 Loan - DEG 3 [Member] | Reported Value Measurement [Member]
Loans	37.1	37.1
Platanares Loan - OPIC [Member]
Loans	118.9	115.3
Platanares Loan - OPIC [Member] | Estimate of Fair Value Measurement [Member]
Loans	118.9	115.3
Platanares Loan - OPIC [Member] | Reported Value Measurement [Member]
Loans	102.4	104.5
Amatitlan Loan [Member]
Loans	25.5	26.4
Amatitlan Loan [Member] | Estimate of Fair Value Measurement [Member]
Loans	25.5	26.4
Amatitlan Loan [Member] | Reported Value Measurement [Member]
Loans	25.4	26.3
OFC Two Senior Secured Notes [Member] | Estimate of Fair Value Measurement [Member]
Notes	218.1	210.9
OFC Two Senior Secured Notes [Member] | Reported Value Measurement [Member]
Notes	198.4	203
Don A. Campbell 1 ("DAC1") [Member]
Notes	81.7	78.5
Don A. Campbell 1 ("DAC1") [Member] | Estimate of Fair Value Measurement [Member]
Notes	81.7	78.5
Don A. Campbell 1 ("DAC1") [Member] | Reported Value Measurement [Member]
Notes	76.6	78.2
USG Prudential - NV [Member]
Notes	32.8	30.6
USG Prudential - NV [Member] | Estimate of Fair Value Measurement [Member]
Notes	32.8	30.6
USG Prudential - NV [Member] | Reported Value Measurement [Member]
Notes	28.3	28.4
USG Prudential - ID [Member]
Notes	18.3	18.6
USG Prudential - ID [Member] | Estimate of Fair Value Measurement [Member]
Notes	18.3	18.6
USG Prudential - ID [Member] | Reported Value Measurement [Member]
Notes	18.9	19.6
USG DOE [Member]
Notes	46.2	45
USG DOE [Member] | Estimate of Fair Value Measurement [Member]
Notes	46.2	45
USG DOE [Member] | Reported Value Measurement [Member]
Notes	39.4	40.8
Senior Unsecured Bonds [Member]
Senior Unsecured debt	207.7	205.7
Senior Unsecured Bonds [Member] | Estimate of Fair Value Measurement [Member]
Senior Unsecured debt	207.7	205.7
Senior Unsecured Bonds [Member] | Reported Value Measurement [Member]
Senior Unsecured debt	204.3	204.3
Senior Unsecured Loan [Member]
Senior Unsecured debt	169	161.3
Senior Unsecured Loan [Member] | Estimate of Fair Value Measurement [Member]
Senior Unsecured debt	169	161.3
Senior Unsecured Loan [Member] | Reported Value Measurement [Member]
Senior Unsecured debt	150	150
Plumstriker Loan Agreement [Member]
Loans	21.4
Senior Unsecured debt		21.7
Plumstriker Loan Agreement [Member] | Estimate of Fair Value Measurement [Member]
Loans	21.4	21.7
Plumstriker Loan Agreement [Member] | Reported Value Measurement [Member]
Loans	$ 21.3	$ 21.6

Note 4 - Fair Value of Financ_6

Note 4 - Fair Value of Financial Instruments - Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Revolving lines of credit	$ 270.5	$ 40.6
Deposits	11.8	12.2
Commercial Paper [Member]
Commercial paper	8.3	50
Olkaria III OPIC [Member]
Loans	206.5	202.1
Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	46.2	43.8
Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	40.8	38.8
Platanares Loan - OPIC [Member]
Loans	118.9	115.3
Amatitlan Loan [Member]
Loans	25.5	26.4
OFC Senior Secured Notes [Member]
Notes	218.1	210.9
Don A. Campbell 1 ("DAC1") [Member]
Notes	81.7	78.5
USG Prudential - NV [Member]
Notes	32.8	30.6
USG Prudential - ID [Member]
Notes	18.3	18.6
USG DOE [Member]
Notes	46.2	45
Senior Unsecured Bonds [Member]
Senior Unsecured debt	207.7	205.7
Senior Unsecured Loan [Member]
Senior Unsecured debt	169	161.3
Plumstriker Loan Agreement [Member]
Loans	21.4
Senior Unsecured debt		21.7
Other Long-term Debt [Member]
Senior Unsecured debt	16.2	16.3
Fair Value, Inputs, Level 1 [Member]
Revolving lines of credit	0	0
Deposits	11.8	12.2
Fair Value, Inputs, Level 1 [Member] | Commercial Paper [Member]
Commercial paper	0	0
Fair Value, Inputs, Level 1 [Member] | Olkaria III OPIC [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
Senior Unsecured debt		0
Fair Value, Inputs, Level 1 [Member] | Other Long-term Debt [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 2 [Member]
Revolving lines of credit	270.5	40.6
Deposits	0	0
Fair Value, Inputs, Level 2 [Member] | Commercial Paper [Member]
Commercial paper	8.3	50
Fair Value, Inputs, Level 2 [Member] | Olkaria III OPIC [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	25.5	26.4
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	21.4
Senior Unsecured debt		21.7
Fair Value, Inputs, Level 2 [Member] | Other Long-term Debt [Member]
Senior Unsecured debt	0	0
Fair Value, Inputs, Level 3 [Member]
Revolving lines of credit	0	0
Deposits	0	0
Fair Value, Inputs, Level 3 [Member] | Commercial Paper [Member]
Commercial paper	0	0
Fair Value, Inputs, Level 3 [Member] | Olkaria III OPIC [Member]
Loans	206.5	202.1
Fair Value, Inputs, Level 3 [Member] | Olkaria III Plant 4 Loan - DEG 2 [Member]
Loans	46.2	43.8
Fair Value, Inputs, Level 3 [Member] | Olkaria III plant 1 Loan - DEG 3 [Member]
Loans	40.8	38.8
Fair Value, Inputs, Level 3 [Member] | Platanares Loan - OPIC [Member]
Loans	118.9	115.3
Fair Value, Inputs, Level 3 [Member] | Amatitlan Loan [Member]
Loans	0	0
Fair Value, Inputs, Level 3 [Member] | OFC Senior Secured Notes [Member]
Notes	218.1	210.9
Fair Value, Inputs, Level 3 [Member] | Don A. Campbell 1 ("DAC1") [Member]
Notes	81.7	78.5
Fair Value, Inputs, Level 3 [Member] | USG Prudential - NV [Member]
Notes	32.8	30.6
Fair Value, Inputs, Level 3 [Member] | USG Prudential - ID [Member]
Notes	18.3	18.6
Fair Value, Inputs, Level 3 [Member] | USG DOE [Member]
Notes	46.2	45
Fair Value, Inputs, Level 3 [Member] | Senior Unsecured Bonds [Member]
Senior Unsecured debt	207.7	205.7
Fair Value, Inputs, Level 3 [Member] | Senior Unsecured Loan [Member]
Senior Unsecured debt	169	161.3
Fair Value, Inputs, Level 3 [Member] | Plumstriker Loan Agreement [Member]
Loans	0
Senior Unsecured debt		0
Fair Value, Inputs, Level 3 [Member] | Other Long-term Debt [Member]
Senior Unsecured debt	$ 16.2	$ 16.3

Note 5 - Stock-based Compensa_2

Note 5 - Stock-based Compensation (Details Textual) shares in Thousands	Mar. 31, 2020shares
The 2018 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	0

Note 6 - Interest Expense, Ne_2

Note 6 - Interest Expense, Net - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest related to sale of tax benefits	$ 2,324	$ 3,661
Interest expense	17,166	17,562
Less — amount capitalized	(2,217)	0
Total interest expense, net	$ 17,273	$ 21,223

Note 7 - Earnings Per Share (De

Note 7 - Earnings Per Share (Details Textual) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	4,535	249,908

Note 7 - Earnings Per Share - S

Note 7 - Earnings Per Share - Shares Used to Calculate Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Weighted average number of shares used in computation of basic earnings per share add: (in shares)	51,036	50,709
Additional shares from the assumed exercise of employee stock options (in shares)	490	303
Weighted average number of shares used in computation of diluted earnings per share (in shares)	51,526	51,012

Note 8 - Business Segments (Det

Note 8 - Business Segments (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Number of Reportable Segments	3
Revenue from Contract with Customer, Including Assessed Tax	$ 192,113	$ 199,038
Goodwill, Ending Balance	19,963		$ 20,140
Electricity Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax	142,856	142,908
Goodwill, Ending Balance	20,000	20,100
Electricity Segment [Member] | Accounting Standards Update 2014-09 [Member]
Revenue from Contract with Customer, Including Assessed Tax	16,800	17,000
Product and Energy Storage and Management Services Segments [Member]
Goodwill, Ending Balance	$ 0	$ 0

Note 8 - Business Segments - Su

Note 8 - Business Segments - Summarized Financial Information Concerning Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020		Mar. 31, 2019		Dec. 31, 2019
Revenues		$ 192,113		$ 199,038
Operating income (loss)		61,057		53,725
Segment assets at period end		3,445,613	[1],[2]	3,143,214	[1],[3]	$ 3,250,494
Intersegment Eliminations [Member]
Revenues		8,656		18,261
Segment Reconciling Items [Member]
Segment assets at period end		76,008		71,885
Electricity Segment [Member]
Revenues		142,856		142,908
Operating income (loss)		58,630		51,551
Segment assets at period end	[1]	3,139,603	[2]	2,950,444	[3]
Electricity Segment [Member] | Intersegment Eliminations [Member]
Revenues		0		0
Electricity Segment [Member] | Segment Reconciling Items [Member]
Segment assets at period end		76,008		71,885
Product Segment [Member]
Revenues		47,411		52,128
Operating income (loss)		3,872		4,252
Segment assets at period end	[1]	230,831	[2]	125,248	[3]
Product Segment [Member] | Intersegment Eliminations [Member]
Revenues		8,656		18,261
Product Segment [Member] | Segment Reconciling Items [Member]
Segment assets at period end		0		0
Other Segments [Member]
Revenues		1,846		4,002
Operating income (loss)		(1,445)		(2,078)
Segment assets at period end	[1]	75,179	[2]	67,522	[3]
Other Segments [Member] | Intersegment Eliminations [Member]
Revenues		0		0
Other Segments [Member] | Segment Reconciling Items [Member]
Segment assets at period end		0		0
UNITED STATES
Revenues	[4]	93,936		106,773
UNITED STATES | Electricity Segment [Member]
Revenues	[4]	91,692		91,528
UNITED STATES | Product Segment [Member]
Revenues	[4]	398		11,243
UNITED STATES | Other Segments [Member]
Revenues	[4]	1,846		4,002
Non-US [Member]
Revenues	[5]	98,177		92,265
Non-US [Member] | Electricity Segment [Member]
Revenues	[5]	51,164		51,380
Non-US [Member] | Product Segment [Member]
Revenues	[5]	47,013		40,885
Non-US [Member] | Other Segments [Member]
Revenues	[5]	$ 0		$ 0
[1]	Electricity segment assets include goodwill in the amount of $20.0 million and $20.1 million as of March 31, 2020 and 2019, respectively. No goodwill is included in the Product and ESMS segment assets as of March 31, 2020 and 2019.
[2]	Including unconsolidated investments 76,008 76,008
[3]	Including unconsolidated investments 71,885 71,885
[4]	Electricity segment revenues in the United States are all accounted under lease accounting except for $16.8 million and $17.0 million in the three months ended March 31, 2020 and 2019, respectively, that are accounted under ASC 606. Product and ESMS segment revenues in the United States are accounted under ASC 606.
[5]	Electricity segment revenues in foreign countries are all accounted under lease accounting. Product segment revenues in foreign countries are accounted under ASC 606.

Note 8 - Business Segments - Re

Note 8 - Business Segments - Reconciling Information Between Reportable Segments and Consolidated Totals (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 192,113	$ 199,038
Operating income (loss)	61,057	53,725
Interest income	402	293
Interest expense, net	(17,273)	(21,223)
Derivatives and foreign currency transaction gains (losses)	393	472
Income attributable to sale of tax benefits	4,132	7,764
Other non-operating income (expense), net	78	91
Total consolidated income before income taxes and equity in income of investees	48,789	41,122
Intersegment Eliminations [Member]
Revenue	8,656	18,261
Consolidation, Eliminations [Member]
Revenue	$ (8,656)	$ (18,261)

Note 9 - Commitments and Cont_2

Note 9 - Commitments and Contingencies (Details Textual) - Former Local Sales Representative vs. Ormat [Member] - Pending Litigation [Member] $ in Millions	Mar. 29, 2016USD ($)
Loss Contingency, Damages Sought, Value	$ 4.6
Loss Contingency, Additional Damages Sought for Ormat Geothermal Products Sales in Chile, Percent	3.75%
Loss Contingency, Damages Sought, Ormat Geothermal Products Sales in Chile, Period (Year)	10 years

Note 10 - Income Taxes (Details

Note 10 - Income Taxes (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		11 Months Ended
	Dec. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Nov. 30, 2019
Effective Income Tax Rate Reconciliation, Percent, Total		37.20%	34.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%
Foreign Tax Authority [Member] | Kenya Revenue Authority [Member] | Tax Years 2013-2017 [Member]
Income Tax Examination, Settlement Demanded Including Accrued Interest and Penalties	$ 17			$ 202

Note 11 - Subsequent Events (De

Note 11 - Subsequent Events (Details Textual) $ / shares in Units, $ in Thousands	May 08, 2020USD ($)$ / shares	Apr. 30, 2020USD ($)MWh	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Apr. 20, 2020USD ($)	Apr. 17, 2020MWh	Apr. 16, 2020MWh	Apr. 06, 2020USD ($)
Dividends, Common Stock, Total			$ 5,614	$ 5,579
Subsequent Event [Member]
Dividends, Common Stock, Total	$ 5,600
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ / shares	$ 0.11
Dividends Payable, Date of Record	May 21, 2020
Dividends Payable, Date to be Paid	Jun. 2, 2020
Subsequent Event [Member] | Pomona Battery Storage Facility [Member]
Storage Capacity of Acquired Facility (Megawatt-Hour) | MWh		20
Payments to Acquire Productive Assets, Total		$ 47,000
Subsequent Event [Member] | Olkaria Compex [Member]
Capacity of Plant, Contracted Level (Megawatt-Hour) | MWh						133.9	150
Subsequent Event [Member] | Additional Series 3 Bonds [Member]
Debt Instrument, Face Amount								$ 50,000
Debt Instrument, Interest Rate, Stated Percentage								4.45%
Subsequent Event [Member] | Second Addition to Series 3 Bonds [Member]
Debt Instrument, Face Amount					$ 14,500
Debt Instrument, Interest Rate, Stated Percentage					4.45%
Subsequent Event [Member] | Second Addendum Migdal Loan [Member]
Debt Instrument, Face Amount		$ 50,000
Debt Instrument, Interest Rate, Stated Percentage		5.44%
Debt Instrument, Principal to Be Repaid in Installments		$ 31,500
Debt Instrument, Number of Semi-annual Payments		15
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid		$ 18,500