Ormat (ORA) 10-Q 5 Aug 15 2015 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 05, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	ORMAT TECHNOLOGIES, INC.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		49,002,583
Amendment Flag	false
Entity Central Index Key	1,296,445
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 137,665	$ 40,230
Restricted cash and cash equivalents (all related to VIEs)	104,870	93,248
Receivables:
Trade	58,089	48,609
Related entity		451
Other	14,066	10,141
Due from Parent		1,337
Inventories	16,401	16,930
Costs and estimated earnings in excess of billings on uncompleted contracts	7,093	27,793
Deferred income taxes	267	251
Prepaid expenses and other	31,055	34,884
Total current assets	369,506	273,874
Deposits and other	18,038	20,044
Deferred income taxes	1,694
Deferred charges	36,512	37,567
Property, plant and equipment, net ($1,445,005 and $1,339,342 related to VIEs, respectively)	1,519,945	1,437,637
Construction-in-process ($167,814 and $162,006 related to VIEs, respectively)	277,990	296,722
Deferred financing and lease costs, net	25,836	27,057
Intangible assets, net	27,029	28,655
Total assets	2,276,550	2,121,556
Current liabilities:
Accounts payable and accrued expenses	98,481	88,276
Deferred income taxes	975	974
Short term revolving credit lines with banks (full recourse)		20,300
Billings in excess of costs and estimated earnings on uncompleted contracts	49,731	24,724
Limited and non-recourse (all related to VIEs):
Senior secured notes	32,981	34,368
Other loans	17,995	17,995
Full recourse	17,203	19,116
Total current liabilities	217,366	205,753
Limited and non-recourse (all related to VIEs):
Senior secured notes	320,235	360,366
Other loans	255,627	264,625
Full recourse:
Senior unsecured bonds (plus unamortized premium based upon 7% of $667)	250,136	250,289
Other loans	26,737	34,351
Unconsolidated investments	5,215	3,617
Liability associated with sale of tax benefits	27,298	39,021
Deferred lease income	59,070	60,560
Deferred income taxes	73,887	66,220
Liability for unrecognized tax benefits	7,151	7,511
Liabilities for severance pay	19,424	20,399
Asset retirement obligation	19,894	19,142
Other long-term liabilities	697	2,956
Total liabilities	$ 1,282,737	$ 1,334,810
Commitments and contingencies (Note 10)
The Company's stockholders' equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 49,002,583 and 45,537,162 shares issued and outstanding as of June 30, 2015 and December 31, 2014, respectively	$ 49	$ 46
Additional paid-in capital	845,173	742,006
Retained earnings	59,155	41,539
Accumulated other comprehensive income	(8,519)	(8,668)
	895,858	774,923
Noncontrolling interest	97,955	11,823
Total equity	993,813	786,746
Total liabilities and equity	2,276,550	2,121,556
Variable Interest Entity, Primary Beneficiary [Member]
Receivables:
Property, plant and equipment, net ($1,445,005 and $1,339,342 related to VIEs, respectively)	1,445,005	1,339,342
Construction-in-process ($167,814 and $162,006 related to VIEs, respectively)	$ 167,814	$ 162,006

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, plant and equipment, net (related to VIEs)	$ 1,519,945	$ 1,437,637
Construction-in-process (related to VIEs)	$ 277,990	$ 296,722
Senior unsecured bonds %	7.00%	7.00%
Senior unsecured bonds unamortized premium	$ 667	$ 667
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	49,002,583	45,537,162
Common stock, shares outstanding	49,002,583	45,537,162
Variable Interest Entity, Primary Beneficiary [Member]
Property, plant and equipment, net (related to VIEs)	$ 1,445,005	$ 1,339,342
Construction-in-process (related to VIEs)	$ 167,814	$ 162,006

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Electricity	$ 90,926	$ 91,692	$ 180,879	$ 186,509
Product	49,561	35,911	79,839	83,530
Total revenue	140,487	127,603	260,718	270,039
Cost of revenue:
Electricity	62,522	67,322	118,103	124,356
Product	27,182	20,324	47,807	52,267
Total cost of revenue	89,704	87,646	165,910	176,623
Gross margin	50,783	39,957	94,808	93,416
Operating expenses:
Research and development expenses	414	232	777	145
Selling and marketing expenses	4,283	3,216	7,716	6,595
General and administrative expenses	7,443	6,072	17,647	13,668
Write-off of unsuccessful exploration activities		8,107	174	8,107
Operating income	38,643	22,330	68,494	64,901
Other income (expense):
Interest income	44	90	53	201
Interest expense, net	(18,859)	(22,072)	(36,687)	(42,590)
Foreign currency translation and transaction losses	(571)	(55)	(1,937)	(693)
Income attributable to sale of tax benefits	4,731	6,130	10,283	12,847
Gain from sale of property, plant and equipment		7,628	(531)	7,628
Other non-operating income (expense), net	(1,675)	343	(1,392)	406
Income before income taxes and equity in losses of investees	22,313	14,394	38,814	42,700
Income tax provision	(6,056)	(4,967)	(11,515)	(11,287)
Equity in losses of investees, net	(984)	(114)	(1,759)	(311)
Net income	15,273	9,313	25,540	31,102
Net income attributable to noncontrolling interest	(859)	(177)	(1,094)	(414)
Net income attributable to the Company's stockholders	14,414	9,136	24,446	30,688
Comprehensive income:
Net income	15,273	9,313	25,540	31,102
Other comprehensive income (loss), net of related taxes:
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment	3,460	(4,088)	164	(4,088)
Loss in respect of derivative instruments designated for cash flow hedge	23		46
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge	(31)	(36)	(61)	(72)
Comprehensive income	18,725	5,189	25,689	26,942
Comprehensive income attributable to noncontrolling interest	(859)	(177)	(1,094)	(414)
Comprehensive income attributable to the Company's stockholders	$ 17,866	$ 5,012	$ 24,595	$ 26,528
Basic:
Net income (in Dollars per share)	$ 0.29	$ 0.20	$ 0.51	$ 0.67
Diluted:
Net income (in Dollars per share)	$ 0.28	$ 0.20	$ 0.49	$ 0.67
Weighted average number of shares used in computation of earnings per share attributable to the Company's stockholders:
Basic (in Shares)	48,881	45,606	48,063	45,545
Diluted (in Shares)	50,600	45,963	49,444	45,827
Dividend per share declared (in Dollars per share)	$ 0.06	$ 0.05	$ 0.12	$ 0.11

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2013	$ 745,111	$ 46	$ 735,295	$ (3,088)	$ 487	$ 732,740	$ 12,371
Beginning balance, shares (in Shares) at Dec. 31, 2013		45,461
Ending balance at Jun. 30, 2014	770,600	$ 46	738,842	22,597	(3,673)	757,812	12,788
Ending balance, shares (in Shares) at Jun. 30, 2014		45,519
Stock-based compensation	2,806		2,806			2,806
Exercise of options by employees and directors	741		741			741
Exercise of options by employees and directors (in Shares)		58
Cash paid to noncontrolling interest	(254)						(254)
Cash dividend declared, per share	(5,003)			(5,003)		(5,003)
Other comprehensive income (loss), net of related taxes:
Increase in noncontrolling interest	257						257
Net income	31,102			30,688		30,688	414
Other comprehensive income (loss), net of related taxes:
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment (net of related tax of $0)	(4,088)				(4,088)	(4,088)
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge (net of related tax)	(72)				(72)	(72)
Beginning balance at Dec. 31, 2014	786,746	$ 46	742,006	41,539	(8,668)	774,923	11,823
Beginning balance, shares (in Shares) at Dec. 31, 2014		45,537
Ending balance at Jun. 30, 2015	993,813	$ 49	845,173	59,155	(8,519)	895,858	97,955
Ending balance, shares (in Shares) at Jun. 30, 2015		49,002
Stock-based compensation	2,156		2,156			2,156
Exercise of options by employees and directors	3,966		3,966			3,966
Exercise of options by employees and directors (in Shares)		469
Share exchange with Parent (Note 1)	25,757	$ 3	25,754			25,757
Share exchange with Parent (Note 1) (in Shares)		2,996
Cash paid to noncontrolling interest	(432)						(432)
Cash dividend declared, per share	(6,830)			(6,830)		(6,830)
Issuance of shares to noncontrolling interest, net of transaction costs	156,761		$ 71,291			71,291	85,470
Other comprehensive income (loss), net of related taxes:
Loss in respect of derivative instruments designated for cash flow hedge (net of related tax of $27)	46				46	46
Net income	25,540			$ 24,446		24,446	$ 1,094
Other comprehensive income (loss), net of related taxes:
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment (net of related tax of $0)	164				164	164
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge (net of related tax)	$ (61)				$ (61)	$ (61)

Consolidated Statements of Equ6

Consolidated Statements of Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash dividend declared,per share (in Dollars per share)	$ 0.12	$ 0.11
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment, tax	$ 0	$ 0
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge, related tax	38	$ 44
Loss in respect of derivative instruments designated for cash flow hedge, related tax	$ 27

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 25,540	$ 31,102
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	52,559	48,819
Amortization of premium from senior unsecured bonds	(154)	(153)
Accretion of asset retirement obligation	752	743
Stock-based compensation	2,156	2,806
Amortization of deferred lease income	(1,342)	(1,343)
Income attributable to sale of tax benefits, net of interest expense	(6,720)	(7,540)
Equity in losses of investees	1,759	311
Mark-to-market of derivative instruments	4,140	(302)
Loss on disposal of property, plant and equipment	531	(7,628)
Write-off of unsuccessful exploration activities	174	8,107
Gain on severance pay fund asset	(572)	(396)
Gain on sale of a subsidiary		(7,628)
Deferred income tax provision	7,024	8,887
Liability for unrecognized tax benefits	(360)	639
Deferred lease revenues	(148)	(124)
Other	484	(181)
Changes in operating assets and liabilities, net of amounts acquired:
Receivables	(12,775)	19,959
Costs and estimated earnings in excess of billings on uncompleted contracts	20,700	(4,701)
Inventories	529	3,997
Prepaid expenses and other	(300)	(8,738)
Deposits and other	(362)	86
Accounts payable and accrued expenses	(2,600)	(11,094)
Due from/to related entities, net	451
Billings in excess of costs and estimated earnings on uncompleted contracts	25,007	20,282
Liabilities for severance pay	(975)	(47)
Other long-term liabilities	(2,259)	313
Due from/to Parent	(513)	(225)
Net cash provided by operating activities	112,726	103,579
Cash flows from investing activities:
Cash acquired in organizational restructuring and share exchange with parent (Note 1)	15,391
Net change in restricted cash, cash equivalents and marketable securities	(11,622)	(3,012)
Cash received from sale of a subsidiary		35,250
Capital expenditures	(86,142)	(89,125)
Cash grant received from the U.S. Treasury under Section 1603 of the ARRA		27,427
Investment in unconsolidated companies		(631)
Decrease in severance pay fund asset, net of payments made to retired employees	2,940	1,079
Net cash used in investing activities	(79,433)	(29,012)
Cash flows from financing activities:
Proceeds from sale of membership interests to noncontrolling interest, net of transaction costs	156,761
Proceeds from exercise of options by employees	3,966	392
Purchase of OFC Senior Secured Notes	(30,638)	(12,860)
Proceeds from revolving credit lines with banks	598,800	1,742,383
Repayment of revolving credit lines with banks	(619,100)	(1,729,800)
Cash received from non-controlling interest	1,654	2,234
Repayments of long-term debt	(29,404)	(41,078)
Cash paid to non-controlling interest	(7,418)	(5,398)
Deferred debt issuance costs	(3,649)	(2,671)
Cash dividends paid	(6,830)	(5,003)
Net cash provided by (used in) financing activities	64,142	(51,801)
Net change in cash and cash equivalents	97,435	22,766
Cash and cash equivalents at beginning of period	40,230	57,354
Cash and cash equivalents at end of period	137,665	80,120
Supplemental non-cash investing and financing activities:
Increase (decrease) in accounts payable related to purchases of property, plant and equipment	$ 12,612	$ (7,289)

Note 1 - General and Basis of P

Note 1 - General and Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Disclosure Text Block [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE 1 — GENERAL AND BASIS OF PRESENTATION 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 contain all information and notes required by U.S. GAAP for annual financial statements. In the opinion of management, these unaudited condensed consolidated interim financial statements reflect all adjustments, which include normal recurring adjustments, necessary for a fair statement of the Company’s consolidated financial position as of June 30, 2015, the consolidated results of operations and comprehensive income (loss) for the six-month periods ended June 30, 2015 and 2014 and the consolidated cash flows for the six-month periods ended June 30, 2015 and 2014. 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 six-month period ended June 30, 2015 are not necessarily indicative of the results to be expected for the year ending December 31, 2015. These condensed 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-K for the year ended December 31, 2014. The condensed consolidated balance sheet data as of December 31, 2014 was derived from the audited consolidated financial statements for the year ended December 31, 2014, but does not include all disclosures required by U.S. GAAP. Dollar amounts, except per share data, in the notes to these financial statements are rounded to the closest $1,000. OFC Senior Secured Notes prepayment In June 2015, the Company repurchased $30.6 million aggregate principal amount of our OFC Senior Secured Notes from the OFC noteholders. As a result of the repurchase, the Company recognized a loss of $1.7 million, including amortization of deferred financing cost of $0.5 million, which is included in other non-operating income (expense), net in the consolidated statements of operations and comprehensive income for the three and six months ended June 30, 2015. Northleaf transaction On April 30, 2015, Ormat Nevada Inc. (“Ormat Nevada”), a wholly-owned subsidiary of the Company, closed the sale of approximately 36.75% of the aggregate membership interests in ORPD LLC (“ORPD”), a new holding company and subsidiary of Ormat Nevada, that indirectly owns the Puna geothermal power plant in Hawaii, the Don A. Campbell geothermal power plant in Nevada, and nine power plant units across three recovered energy generation assets known as OREG 1, OREG 2 and OREG 3 to Northleaf Geothermal Holdings, LLC for $162.3 million. The net proceeds to the Company were $156.8 million after payment of $5.5 million of transaction costs. The sale was made under the Agreement for Purchase of Membership Interests dated February 5, 2015. This transaction closed on April 30, 2015 and resulted in a taxable gain in the U.S. of approximately $102.1 million, for which the Company will utilize a portion of its Net Operating Loss (“NOL”) and tax credit carryforwards to fully offset the tax impact of the gain. Subsequent to closing the transaction, the Company maintained control of ORPD and as such continue to consolidate the entity with non-controlling interest being recorded. Consequently, the Company recorded the net proceeds from the issuance of membership interests as an increase to additional paid-in capital of $71.3 million and non-controlling interests of $85.5 million. See Note 11 for tax details. Share exchange transaction On February 12, 2015, the Company completed the share exchange transaction with its then-parent entity, Ormat Industries Ltd. ("OIL") following which, the Company became a noncontrolled public company and its public float increased from approximately 40% to approximately 76% of its total shares outstanding. Under the terms of the share exchange, OIL shareholders received 0.2592 shares in the company for each share in OIL, or an aggregate of approximately 30.2 million shares, reflecting a net issuance of approximately 3.0 million shares (after deducting the 27.2 million shares that OIL held in the Company). Consequently, the number of total shares of the Company increased from approximately 45.5 million shares to approximately 48.5 million shares as of the closing of the share exchange. In exchange, the Company also received $15.4 million in cash, $0.6 million in other assets and $12.1 million in land and buildings and assumed $0.5 million in liabilities. OIL's principal business purpose was to hold its interest in the Company and the transaction resulted in a transfer of non-material assets from OIL to the Company. Therefore, it does not represent a change in reporting entity and the Company recognized the transfer of net assets at their carrying value as presented in OIL's financial statements. Any activities of OIL will be accounted for prospectively by the Company. OFC 2 loan prepayment On June 20, 2014, Phase I of the Tuscarora Facility achieved Project Completion under the OFC 2 Note Purchase Agreement. In accordance with the terms of the Note Purchase Agreement and following recalibration of the financing assumptions, the loan amount was adjusted through a principal prepayment of $4.3 million. Solar project sale On March 26, 2014, the Company signed an agreement with RET Holdings, LLC to sell the Heber Solar project in Imperial County, California for $35.25 million. The Company received the first payment of $15.0 million during the first quarter of 2014 and the second payment for the remaining $20.25 million in the second quarter of 2014. The Company recognized pre-tax gain of approximately $7.6 million in the second quarter of 2014. Other comprehensive income For the six months ended June 30, 2015 and 2014, the Company classified $15,000 and $72,000, respectively, from accumulated other comprehensive income, of which $25,000 and $116,000, respectively, were recorded to reduce interest expense and $10,000 and $44,000, respectively, were recorded against the income tax provision, in the condensed consolidated statements of operations and comprehensive income. For the three months ended June 30, 2015 and 2014, the Company classified $8,000 and $36,000, respectively, from accumulated other comprehensive income, of which $14,000 and $58,000, respectively, were recorded to reduce interest expense and $5,000 and $22,000, respectively, were recorded against the income tax provision, in the condensed consolidated statements of operations and comprehensive income. Write-off of unsuccessful exploration activities There were no write-offs of unsuccesful exploration activities for the three months ended June 30, 2015. Write-off of unsuccessful activities for the three and six months ended June 30, 2014, was $8.1 million. This represents the write-off of exploration costs related to the Company’s exploration activities in the Wister site in California, which the Company determined in the second quarter of 2014 would not support commercial operations. 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 June 30, 2015 and December 31, 2014, the Company had deposits totaling $49,931,000 and $23,488,000, respectively, in seven U.S. financial institutions that were federally insured up to $250,000 per account. At June 30, 2015 and December 31, 2014, the Company’s deposits in foreign countries amounted to approximately $22,796,000 and $24,304,000, respectively. At June 30, 2015 and December 31, 2014, accounts receivable related to operations in foreign countries amounted to approximately $33,024,000 and $21,935,000, respectively. At June 30, 2015 and December 31, 2014, accounts receivable from the Company’s primary customers amounted to approximately 59.5% and 69.0%, respectively, of the Company’s accounts receivable. Sierra Pacific Power Company and Nevada Power Company (subsidiaries of NV Energy, Inc.) accounted for 20.0% and 17.4% of the Company’s total revenue for the three months ended June 30, 2015 and 2014, respectively and 21.8% and 17.5% for the six months ended June 30, 2015 and 2014, respectively. Southern California Edison accounted for 10.3% and 13.5% of the Company’s total revenue for the three months ended June 30, 2015 and 2014, respectively, and 9.7% and 12.7% for the three months ended June 30, 2015 and 2014, respectively. Kenya Power and Lighting Co. Ltd. accounted for 15.4% and 16.9% of the Company’s total revenue for the three months ended June 30, 2015 and 2014, respectively and 16.5% and 15.6% for the six months ended June 30, 2015 and 2014, respectively. The Company performs ongoing credit evaluations of its customers’ financial condition. The Company has historically been able to collect on all of its receivable balances, and accordingly, no provision for doubtful accounts has been made.

Note 2 - New Accounting Pronoun

Note 2 - New Accounting Pronouncements	6 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	NOTE 2 — NEW ACCOUNTING PRONOUNCEMENTS New accounting pronouncements effective in the six-month period ended June 30, 2015 Service Concession Arrangements In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-05, Service Concession Arrangements, Topic 853. The update provides that an operating entity should not account for a service concession arrangement within the scope of this update as a lease in accordance with Topic 840, Leases. The amendments also specify that the infrastructure used in a service concession arrangement should not be recognized as property, plant, and equipment of the operating entity. A service concession arrangement is an arrangement between a public-sector entity grantor and an operating entity under which the operating entity operates the grantor’s infrastructure and may provide the construction, upgrading, or maintenance services of the grantor’s infrastructure. The amendments apply to an operating entity of a service concession arrangement entered into with a public-sector entity grantor when the arrangement meets both of the following conditions: (1) the grantor controls or has the ability to modify or approve the services that the operating entity must provide with the infrastructure, to whom it must provide them, and at what price and (2) The grantor controls, through ownership, beneficial entitlement, or otherwise, any residual interest in the infrastructure at the end of the term of the arrangement. The guidance was applied on a modified retrospective basis to service concession arrangements in existence at January 1, 2015. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements. New accounting pronouncements effective in future periods Amendments to Fair Value Measurement In June 2015, the FASB issued ASU 2015-10, Amendment to Fair Value Measurement, Subtopic 82 0-10. The amendment provides that the reporting entity shall disclose for each class of assets and liabilities measured at fair value in the statement of financial position the following information: for recurring fair value measurements, the fair value measurement at the end of the reporting period, and for non-recurring fair vale measurement, the fair value measurement at the relevant measurement date and the reason for the measurement. The amendments in this update are effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. The Company is currently evaluating the potential impact, if any, of the adoption of this update on its consolidated financial statements. Amendments to the Consolidation A nalysis In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis, Topic 810. The update provides that all reporting entities that hold a variable interest in other legal entities will need to re-evaluate their consolidation conclusions and potentially revise their disclosures. This amendment affects both variable interest entity (“VIE”) and voting interest entity (“VOE”) consolidation models. The update does not change the general order in which the consolidation models are applied. A reporting entity that holds an economic interest in, or is otherwise involved with, another legal entity (has a variable interest) should first determine if the VIE model applies, and if so, whether it holds a controlling financial interest under that model. If the entity being evaluated for consolidation is not a VIE, then the VOE model should be applied to determine whether the entity should be consolidated by the reporting entity. Since consolidation is only assessed for legal entities, the determination of whether there is a legal entity is important. It is often clear when the entity is incorporated, but unincorporated structures can also be legal entities and judgment may be required to make that determination. The update contains a new example that highlights the judgmental nature of this legal entity determination. The update is effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. The Company is currently evaluating the potential impact, if any, of the adoption of this update on its consolidated financial statements. Simplifying the Presentation of Debt Costs In April 2015, the FASB issued ASU 2015 -03, Interest-Imputation of Interest: Simplifying the Presentation of Debt Costs, Subtopic 835-30. The update provides that debt issuance costs related to a recognized debt liability be presented in the balance sheet as direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted. The Company plans to adopt this update in its interim period beginning January 1, 2016 and expects the potential impact to be a reclassification of the debt issuance costs totaling $21.7 million as of June 30, 2015 . Revenues from Contracts with Customers In May 2014, the FASB issued ASU 2014-09, Revenues from Contracts with Customers, Topic 606, which was a joint project of the FASB and the International Accounting Standards Board to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. The update provides that an entity should recognize revenue 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, an entity is required to apply each of the following steps: (1) identify the contract(s) with the customer; (2) identify the performance obligations in the contracts; (3) determine the transaction price; (4) allocate the transaction price to the performance obligation in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. The amendments in this update are effective for annual reporting periods beginning after December 15, 2017 , including interim periods within that reporting period. Early adoption is not permitted. The Company is currently evaluating the potential impact, if any, of the adoption of these amendments on its consolidated financial statements.

Note 3 - Inventories

Note 3 - Inventories	6 Months Ended
	Jun. 30, 2015
Inventory Disclosure [Abstract]
Inventory Disclosure [Text Block]	NOTE 3 — INVENTORIES Inventories consist of the following: June 30, December 31, 2015 2014 (Dollars in thousands) Raw materials and purchased parts for assembly $ 341 $ 4,840 Self-manufactured assembly parts and finished products 16,060 12,090 Total $ 16,401 $ 16,930

Note 4 - Unconsolidated Investm

Note 4 - Unconsolidated Investments	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures Disclosure [Text Block]	NOTE 4 — UNCONSOLIDATED INVESTMENTS Unconsolidated investments consist of the following: June 30, December 31, 2015 2014 (Dollars in thousands) Sarulla $ (5,215 ) $ (3,617 ) The Sarulla Project The Company is a 12.75% member of a consortium which is in the process of developing the Sarulla geothermal power project in Indonesia with expected generating capacity of approximately 330 megawatts (“MW”). The Sarulla project is located in Tapanuli Utara, North Sumatra, Indonesia and will be owned and operated by the consortium members under the framework of a Joint Operating Contract (“JOC”) and Energy Sales Contract (“ESC”) that were signed on April 4, 2013. Under the JOC, PT Pertamina Geothermal Energy (“PGE”), the concession holder for the project, has provided the consortium with the right to use the geothermal field, and under the ESC, PT PLN, the state electric utility, will be the off-taker at Sarulla for a period of 30 years. In addition to its equity holdings in the consortium, the Company designed the Sarulla plant and is expected to supply its Ormat Energy Converters to the power plant. The supply contract was signed in October 2013. The consortium has started preliminary testing and development activities at the site and signed an engineering procurement and construction agreement (“EPC”) with an unrelated third party. The project will be constructed in three phases of approximately 110 MW each, utilizing both steam and brine extracted from the geothermal field to increase the power plant’s efficiency. On May 16, 2014, the consortium closed $1.17 billion in financing for the development of the Sarulla project with a consortium of lenders comprised of Japan Bank for International Cooperation (“JBIC”), the Asian Development Bank and six commercial banks and obtained construction and term loans on a limited recourse basis backed by a political risk guarantee from JBIC. Of the $1.17 billion, $0.1 billion (which was drawn down by the Sarulla project company on May 23, 2014) bears a fixed interest rate and $1.07 billion bears interest at a rate linked to LIBOR. The Sarulla consortium entered into interest rate swap agreements with various international banks in order to fix the Libor interest rate on up to $0.96 billion of the $1.07 billion credit facility at a rate of 3.4565%. The interest rate swap became effective as of June 4, 2014 along with the second draw-down by the project company of $50.0 million. The Sarulla project company accounted for the interest rate swap as a cash flow hedge upon which changes in the fair value of the hedging instrument, relative to the effective portion, will be recorded in other comprehensive income. As such, during the six months ended June 30, 2015, the project recorded a gain equal to $3.0 million, of which the Company's share was $0.4 million which was recorded in other comprehensive income. The accumulated loss as of June 30, 2015 is $7.7 million. The first phase of operations is expected to commence in 2016 and the remaining two phases of operations are scheduled to commence within 18 months thereafter. The Company will supply its Ormat Energy Converters to the power plant and has added the $255.6 million supply contract to its product segment backlog. According to the current plan, the Company started to recognize revenue from the project during the third quarter of 2014 and will continue to recognize revenue over the course of the next three to four years. The Company has eliminated the related intercompany profit of $1.6 million against equity in loss of investees. During the six months ended June 30, 2015, the Company did not make any additional investment contributions to the Sarulla project.

Note 5 - Fair Value of Financia

Note 5 - Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	NOTE 5— FAIR VALUE OF FINANCIAL INSTRUMENTS 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 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under the fair value measurement guidance are described below: Level 1 Level 2 Level 3 The following table sets forth certain fair value information at June 30, 2015 and December 31, 2014 for financial assets and liabilities measured at fair value by level within the fair value hierarchy, as well as cost or amortized cost. As required by the fair value measurement guidance, assets and liabilities are classified in their entirety based on the lowest level of inputs that is significant to the fair value measurement. June 30, 2015 Fair Value Carrying Value at June 30, 2015 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Current assets: Cash equivalents (including restricted cash accounts) $ 164,053 $ 164,053 $ 164,053 $ — $ — Derivatives: Swap transaction on natural gas price (1) — — — — — Currency forward contracts (2) 707 707 707 Liabilities: Current liabilities: Derivatives: Swap transaction on natural gas price (1) (11 ) (11 ) — (11 ) — Currency forward contracts (2) (2,899 ) (2,899 ) — (2,899 ) — $ 161,850 $ 161,850 $ 164,053 $ (2,203 ) $ — December 31, 2014 Fair Value Carrying Value at December 31, 2014 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets Current assets: Cash equivalents (including restricted cash accounts) $ 85,076 $ 85,076 $ 85,076 $ — $ — Derivatives: Swap transaction on natural gas price (1) 4,129 4,129 — 4,129 — Liabilities: Current liabilities: Derivatives: Currency forward contracts (2) (2,882 ) (2,882 ) — (2,882 ) — $ 86,323 $ 86,323 $ 85,076 $ 1,247 $ — (1) This amount relates to a swap contract on natural gas prices, valued primarily based on observable inputs, including forward and spot prices for related commodity indices, and is included within “prepaid expenses and other” and “accounts payable and accrued expenses” on June 30, 2015 and December 31, 2014, respectively, in the consolidated balance sheets with the corresponding gain or loss being recognized within “electricity revenue” in the consolidated statement of operations and comprehensive income. (2) These amounts relate to derivatives which represent currency forward contracts valued primarily based on observable inputs, including forward and spot prices for currencies, netted against contracted rates and then multiplied against notional amounts, and are included within “accounts payable and accrued expenses” on June 30, 2015 and December 31, 2014, in the consolidated balance sheet with the corresponding gain or loss being recognized within “foreign currency translation and transaction losses” in the consolidated statement of operations and comprehensive income. 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 of the fair value hierarchy because they are valued using quoted market prices in an active market. The following table presents the amounts of gain (loss) recognized in the consolidated statements of operations and comprehensive income on derivative instruments not designated as hedges: Amount of recognized gain (loss) Derivatives not designated as Location of recognized gain Three Months Ended June 30, Six Months Ended June 30, hedging instruments (loss) 2015 2014 2015 2014 Swap transaction on oil price Electricity revenue — (679 ) — 228 Swap transactions on natural gas price Electricity revenue 81 372 398 (2,904 ) Currency forward contracts Foreign currency translation and transaction gains (losses) (967 ) 223 (2,218 ) (8 ) $ (886 ) $ (84 ) $ (1,820 ) $ (2,684 ) On September 3, 2013, the Company entered into a Natural Gas Index (“NGI”) swap contract with a bank covering a notional quantity of approximately 4.4 million British Thermal Units (“MMbtu”) for settlement effective January 1, 2014 until December 31, 2014, in order to reduce its exposure to fluctuations in natural gas prices under its Power Purchase Agreements (“PPAs”) with Southern California Edison to below $4.035 per MMbtu. The contract did not have up-front costs. Under the terms of this contract, the Company made floating rate payments to the bank and received fixed rate payments from the bank on each settlement date. The swap contract had a monthly settlement whereby the difference between the fixed price of $4.035 per MMbtu and the market price on the first commodity business day on which the relevant commodity reference price is published in the relevant calculation period (January 1, 2014 to December 1, 2014) was settled on a cash basis. On October 16, 2013, the Company entered into an NGI swap contract with a bank covering a notional quantity of approximately 4.2 million MMbtu for settlement effective January 1, 2014 until December 31, 2014, in order to reduce its exposure to fluctuations in natural gas prices under its PPAs with Southern California Edison to below $4.103 per MMbtu. The contract did not have any up-front costs. Under the terms of this contract, the Company made floating rate payments to the bank and received fixed rate payments from the bank on each settlement date. The swap contract had a monthly settlement whereby the difference between the fixed price of $4.103 per MMbtu and the market price on the first commodity business day on which the relevant commodity reference price is published in the relevant calculation period (January 1, 2014 to December 1, 2014) was settled on a cash basis. On October 16, 2013, the Company entered into a New York Harbor Ultra-Low Sulfur Diesel swap contract with a bank covering a notional quantity of 275,000 BBL effective from January 1, 2014 until December 31, 2014 to reduce the Company’s exposure to fluctuations in the energy rate caused by fluctuations in oil prices under the 25 MW PPA for the Puna complex. The Company entered into this contract because the swap had a high correlation with the avoided costs (which are incremental costs that the power purchaser avoids by not having to generate such electrical energy itself or purchase it from others) that Hawaii Electric Light Company (“HELCO”) uses to calculate the energy rate. The contract did not have any up-front costs. Under the term of this contract, the Company made floating rate payments to the bank and received fixed rate payments from the bank on each settlement date ($125.15 per BBL). The swap contract had a monthly settlement whereby the difference between the fixed price of $125.15 per BBL and the monthly average market price was settled on a cash basis. On March 6, 2014, and on May 14, 2015, the Company entered into NGI swap contracts with a bank covering a notional quantity of approximately 2.2 MMbtu for settlement effective January 1, 2015 until March 31, 2015, and covering a notional quantity of approximately 2.4 MMbtu for settlement effective June 1, 2015 until December 31, 2015, respectively, in order to reduce its exposure to fluctuations in natural gas prices under its PPAs with Southern California Edison to below $4.95 per MMbtu and below $3.00 per MMbtu, respectively. The contracts did not have any up-front costs. Under the terms of these contracts, the Company made, and will make, floating rate payments to the bank and received, and will receive, fixed rate payments from the bank on each settlement date. The swap contracts have monthly settlements whereby the difference between the fixed price and the market price on the first commodity business day on which the relevant commodity reference price is published in the relevant calculation period (January 1, 2015 to March 1, 2015 and June 1, 2015 to December 31, 2015) are settled on a cash basis. The foregoing swap transactions were not designated as hedge transactions and are marked to market with the corresponding gains or losses recognized within “electricity revenue” in the consolidated statements of operations and comprehensive income. The Company recognized a net gain from these transactions of $0.4 million in the six months ended June 30, 2015, compared to net loss of $2.7 million in the six months ended June 30, 2014. For the three months ended June 30, 2015 and 2014, the Company recognized a net gain and a net loss from these transactions of $0.1 million and $0.3 million, respectively. There were no transfers of assets or liabilities between Level 1, Level 2 and Level 3 during the six months ended June 30, 2015. The fair value of the Company’s long-term debt approximates its carrying amount, except for the following: Fair Value Carrying Amount June 30, 2015 December 31, 2014 June 30, 2015 December 31, 2014 (Dollars in millions) (Dollars in millions) Olkaria III Loan - DEG $ 28.2 $ 32.2 $ 27.6 $ 31.6 Olkaria III Loan - OPIC 267.5 279.4 273.6 282.6 Senior Secured Notes: Ormat Funding Corp. ("OFC") 32.4 71.4 33.3 67.2 OrCal Geothermal Inc. ("OrCal") 52.2 55.5 51.8 55.1 OFC 2 LLC ("OFC 2") 232.3 238.8 268.1 272.5 Senior Unsecured Bonds 267.3 265.4 250.1 250.4 Loan from institutional investors 8.1 12.2 8.0 11.9 The fair value of OFC Senior Secured Notes is determined using observable market prices as these securities are traded. The fair value of all 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. The carrying value of other financial instruments, such as revolving lines of credit, deposits, and other long-term debt approximates fair value. The following table presents the fair value of financial instruments as of June 30, 2015: Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III - DEG $ — $ — $ 28.2 $ 28.2 Olkaria III - OPIC — — 267.5 267.5 Senior Secured Notes: OFC — 32.4 — 32.4 OrCal — — 52.5 52.5 OFC 2 — — 232.3 232.3 Senior unsecured bonds — — 267.3 267.3 Loan from institutional investors — — 8.1 8.1 Other long-term debt — 8.3 — 8.3 Revolving credit lines with banks — — — — Deposits 15.8 — — 15.8 The following table presents the fair value of financial instruments as of December 31, 2014: Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III Loan - DEG $ — $ — $ 32.2 $ 32.2 Olkaria III Loan - OPIC — — 279.4 279.4 Senior Secured Notes: OFC — 71.4 — 71.4 OrCal — — 55.5 55.5 OFC 2 — — 238.8 238.8 Senior unsecured bonds — — 265.4 265.4 Loan from institutional investors — — 12.2 12.2 Other long-term debt — 10.0 — 10.0 Revolving lines of credit — 20.3 — 20.3 Deposits 17.3 — — 17.3

Note 6 - Stock-Based Compensati

Note 6 - Stock-Based Compensation	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	NOTE 6 — STOCK-BASED COMPENSATION The 2004 Incentive Compensation Plan In 2004, the Company’s Board of Directors adopted the 2004 Incentive Compensation Plan (“2004 Incentive Plan”), which provides for the grant of the following types of awards: incentive stock options, non-qualified stock options, restricted stock, stock appreciation rights (“SARs”), stock units, performance awards, phantom stock, incentive bonuses, and other possible related dividend equivalents to employees of the Company, directors and independent contractors. Under the 2004 Incentive Plan, a total of 3,750,000 shares of the Company’s common stock were reserved for issuance, all of which could be issued as options or as other forms of awards. Options and SARs granted to employees under the 2004 Incentive Plan cliff vest and are exercisable from the grant date as follows: 25% after 24 months, 25% after 36 months, and the remaining 50% after 48 months. Options granted to non-employee directors under the 2004 Incentive Plan cliff vest and are exercisable one year after the grant date. Vested stock-based awards may be exercised for up to ten years from the grant date. The shares of common stock will be issued upon exercise of options or SARs from the Company’s authorized share capital. The 2004 Incentive Plan expired in May 2012 upon adoption of the 2012 Incentive Compensation Plan (“2012 Incentive Plan”), except as to share based awards outstanding on that date. The 2012 Incentive Compensation Plan In May 2012, the Company’s shareholders adopted the 2012 Incentive Plan, which provides for the grant of the following types of awards: incentive stock options, non-qualified stock options, restricted stock, SARs, stock units, performance awards, phantom stock, incentive bonuses, and other possible related dividend equivalents to employees of the Company, directors and independent contractors. Under the 2012 Incentive Plan, a total of 4,000,000 shares of the Company’s common stock have been reserved for issuance, all of which could be issued as options or as other forms of awards. Options and SARs granted to employees under the 2012 Incentive Plan typically vest and become exercisable as follows: 25% vest 24 months after the grant date, an additional 25% vest 36 months after the grant date, and the remaining 50% vest 48 months after the grant date. Options granted to non-employee directors under the 2012 Incentive Plan will vest and become exercisable one year after the grant date. The term of stock-based awards typically ranges from six to ten years from the grant date. The shares of common stock will be issued upon exercise of options or SARs from the Company’s authorized share capital. The 2012 Incentive Plan empowers the Company’s Board of Directors, in its discretion, to amend the 2012 Incentive Plan in certain respects. Consistent with this authority, in February 2014 the Board adopted and approved certain amendments to the 2012 Incentive Plan. The key amendments are as follows: Increase of per grant limit: Section 15(a) of the 2012 Incentive Plan was amended to allow the grant of up to 400,000 shares of the Company’s common stock with respect to the initial grant of an equity award to newly hired executive officers in any calendar year; and Acceleration of vesting: Section 15(l) of the 2012 Incentive Plan was amended to clarify the Company’s ability to provide in the applicable award agreement that part and/or all of the award will be accelerated upon the occurrence of certain predetermined events and/or conditions, such as a "change in control" (as defined in the 2012 Incentive Plan, as amended).

Note 7 - Interest Expense, Net

Note 7 - Interest Expense, Net	6 Months Ended
	Jun. 30, 2015
Interest Expense Disclosure [Abstract]
Interest Expense Disclosure [Text Block]	NOTE 7 — INTEREST EXPENSE, NET The components of interest expense are as follows: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Interest related to sale of tax benefits $ 2,807 $ 3,669 $ 4,687 $ 6,248 Interest expense 17,025 18,838 33,920 37,229 Less — amount capitalized (973 ) (435 ) (1,920 ) (887 ) $ 18,859 $ 22,072 $ 36,687 $ 42,590

Note 8 - Earnings Per Share

Note 8 - Earnings Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	NOTE 8 — EARNINGS PER SHARE 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 have any equity instruments that are dilutive, except for employee stock-based awards. The table below shows the reconciliation of the number of shares used in the computation of basic and diluted earnings per share: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Weighted average number of shares used in computation of basic earnings per share 48,881 45,606 48,063 45,545 Add: Additional shares from the assumed exercise of employee stock options 1,719 357 1,381 282 Weighted average number of shares used in computation of diluted earnings per share 50,600 45,963 49,444 45,827 The number of stock-based awards that could potentially dilute future earnings per share and that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive was 636,487 and 3,085,713 for the three months ended June 30, 2015 and 2014, respectively, and 765,424 and 3,265,338 for the six months ended June 30, 2015 and 2014, respectively.

Note 9 - Business Segments

Note 9 - Business Segments	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	NOTE 9 — BUSINESS SEGMENTS The Company has two reporting segments: the Electricity segment and the Product segment. These segments are managed and reported separately as each offers different products and serves different markets. The Electricity segment is engaged in the sale of electricity from the Company’s power plants pursuant to PPAs. The Product segment is engaged in the manufacture, including design and development, of turbines and power units for the supply of electrical energy and in the associated construction of power plants utilizing the power units manufactured by the Company to supply energy from geothermal fields and other alternative energy sources. 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: Electricity Product Consolidated (Dollars in thousands) Three Months Ended June 30, 2015: Net revenue from external customers $ 90,926 $ 49,561 $ 140,487 Intersegment revenue — 10,900 10,900 Operating income (loss) 20,920 17,723 38,643 Segment assets at period end * 2,080,209 196,341 2,276,550 * Including unconsolidated investments — — — Three Months Ended June 30, 2014: Net revenue from external customers $ 91,692 $ 35,911 $ 127,603 Intersegment revenue — 15,742 15,742 Operating income (loss) 9,521 12,809 22,330 Segment assets at period end * 2,027,211 117,718 2,144,929 * Including unconsolidated investments 3,308 — 3,308 Six Months Ended June 30, 2015: Net revenue from external customers $ 180,879 $ 79,839 $ 260,718 Intersegment revenue — 30,657 30,657 Operating income (loss) 44,874 23,620 68,494 Segment assets at period end * 2,080,209 196,341 2,276,550 * Including unconsolidated investments — — — Six Months Ended June 30, 2014: Net revenue from external customers $ 186,509 $ 83,530 $ 270,039 Intersegment revenue — 36,336 36,336 Operating income (loss) 40,439 24,462 64,901 Segment assets at period end * 2,027,211 117,718 2,144,929 * Including unconsolidated investments 3,308 — 3,308 Reconciling information between reportable segments and the Company’s consolidated totals is shown in the following table: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Revenue: Total segment revenue $ 140,487 $ 127,603 $ 260,718 $ 270,039 Intersegment revenue 10,900 15,742 30,657 36,336 Elimination of intersegment revenue (10,900 ) (15,742 ) (30,657 ) (36,336 ) Total consolidated revenue $ 140,487 $ 127,603 $ 260,718 $ 270,039 Operating income: Operating income $ 38,643 $ 22,330 $ 68,494 $ 64,901 Interest income 44 90 53 201 Interest expense, net (18,859 ) (22,072 ) (36,687 ) (42,590 ) Foreign currency translation and transaction gains (losses) (571 ) (55 ) (1,937 ) (693 ) Income attributable to sale of equity interest 4,731 6,130 10,283 12,847 Gain from sale of property, plant and equipment — 7,628 — 7,628 Other non-operating income (expense), net (1,675 ) 343 (1,392 ) 406 Total consolidated income before income taxes and equity in income of investees $ 22,313 $ 14,394 $ 38,814 $ 42,700

Note 10 - Commitments and Conti

Note 10 - Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	NOTE 10 — COMMITMENTS AND CONTINGENCIES ● Jon Olson and Hilary Wilt, together with Puna Pono Alliance, an unincorporated association, filed suit on February 17, 2015, in the Third Circuit Court for the State of Hawaii, requesting declaratory and injunctive relief requiring that Puna Geothermal Venture (“PGV”) conform to an ordinance that the plaintiffs allege will prohibit PGV from engaging in night drilling operations at its KS-16 well site. On May 17, 2015, the original filing was amended by a second amended complaint, adding the county of Hawaii and the State of Hawaii Department of Land and Natural Resources as defendants to the case. PGV believes that the allegations have no merit, and will continue to defend itself vigorously. ● On July 8, 2014, Global Community Monitor, LiUNA, and two residents of Bishop, California filed a complaint in the United States District Court for the Eastern District of California, alleging that Mammoth Pacific, L.P., the Company and Ormat Nevada are operating three geothermal generating plants in Mammoth Lakes, California (MP-1; MP-II and PLES-I) in violation of the federal Clean Air Act (“CAA”) and Great Basin Unified Air Pollution Control District rules. On June 26, 2015, the United States District Court for the Eastern District of California rejected these arguments and the complaint was dismissed. ● On April 5, 2012, the International Brotherhood of Electrical Workers Local 1260 (“Union”) filed a petition with the National Labor Relations Board (“NLRB”) seeking to organize the operations and maintenance employees at the Puna Project. PGV lost the union election by a slim margin in May 2012. The election results and PGV’s obligation to negotiate with the Union were appealed to the United States Court of Appeals for the Ninth Circuit, but were remanded back to the NLRB after the Supreme Court of the United States’ decision in NLRB v. Noel Canning, 573 U.S., 134 S.Ct. 2550 (2014). On November 26, 2014, the NLRB found that a certification of representative should be issued. In January 2015, the parties submitted a briefing to the NLRB as to whether summary judgment is appropriate. On June 26, 2015 the Board rejected PGV arguments and ordered PGV to recognize the Union. On June 30, 2015 PGV submitted an appeal on the NLRB decision to the DC Circuit Federal Court of Appeals. ● In January 2014, Ormat learned that two former employees have filed a "qui tam" complaint seeking damages, penalties and other relief, alleging that the Company and certain of its subsidiaries (collectively, the "Ormat Parties"), submitted fraudulent applications and certifications to obtain grants for the Puna and North Brawley projects. The United States Department of Justice declined to intervene. The complaint, which is pending before the United States District Court for the District of Nevada, has entered the discovery stage. On July 7, 2015, the Court issued a protective order stipulating limitations against the relators for the benefit of the Ormat Parties, to ensure the protection of confidentiality for sensitive Ormat Parties’ documents. The Ormat Parties believe that the allegations of the lawsuit have no merit, and will continue to defend themselves vigorously. ● 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 our 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 be material to the Company’s consolidated financial statements as a whole.

Note 11 - Income Taxes

Note 11 - Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	NOTE 11 — INCOME TAXES The Company’s effective tax rate for the six months ended June 30, 2015 and 2014 was 29.7% and 26.4%, respectively. The effective tax rate differs from the federal statutory rate of 35% for the six months ended June 30, 2015 due to: (i) a full valuation allowance against the Company’s U.S. deferred tax assets in respect of NOL carryforwards and unutilized tax credits (see below), (ii) lower tax rates in Israel; and (iii) a tax credit and tax exemption related to the Company’s subsidiaries in Guatemala. The effect of the tax credit and tax exemption for the three months ended June 30, 2015 and 2014 was $880,000 and $1,098,000, respectively, and for the six months ended June 30, 2015 and 2014 was $2,026,000 for both periods. At December 31, 2014, the Company had U.S. federal NOL carryforwards of approximately $251.4 million and state NOL carryforwards of approximately $216.5 million, net of valuation allowance of $111.3 million available to reduce future taxable income, which expire between 2021 and 2034 for federal NOLs and between 2014 and 2034 for state NOLs. The Company’s investment tax credits (“ITCs”) in the amount of $0.7 million at December 31, 2014 are available for a 20-year period and expire between 2022 and 2024. Production tax credits (“PTCs”) in the amount of $71.4 million at December 31, 2014 are available for a 20-year period and expire between 2026 and 2034. 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. The most significant factor considered with respect to the ability of the Company to realize these deferred tax assets is the Company’s U.S. cumulative results over the past three years, which made it difficult to support a conclusion that expected taxable income from future operations justifies recognition of deferred tax assets. Based on the results, a valuation allowance in the amount of $111.3 million and $114.8 million was recorded against the U.S. deferred tax assets as of December 31, 2014 and 2013, respectively as, at this point in time, it is more likely than not that the deferred tax assets will not be realized except for the Northleaf transaction as more fully described below. As more fully described in Note 1 (under the heading “Northleaf Transaction”), the Company entered into a significant transaction for the partial sale of certain assets which resulted in a taxable gain in the U.S., for which the Company expects toutilize a portion of its NOL and tax credit carryforwards to fully offset the tax impact of the gain.. In 2015 or in future years, if sufficient additional evidence of the Company’s ability to generate future taxable income is established, the Company may be required to reduce or fully release the valuation allowance, resulting in income tax benefits in its consolidated statement of operations. The total amount of undistributed earnings of foreign subsidiaries for income tax purposes was approximately $75.9 million at December 31, 2014. It is the Company’s intention to reinvest undistributed earnings of its foreign subsidiaries and thereby indefinitely postpone their remittance. Accordingly, no provision has been made for foreign withholding taxes or U.S. income taxes which may become payable if undistributed earnings of foreign subsidiaries were paid as dividends to the Company. The additional taxes on that portion of undistributed earnings which is available for dividends are not practicably determinable. The Company believes that based on its plans to increase operations outside of the U.S., the cash generated from the Company’s operations outside of the U.S. will be reinvested outside of the U.S. In addition, the Company’s U.S. sources of cash and liquidity are sufficient to meet its needs in the U.S. and, accordingly, the Company does not currently plan to repatriate the funds it has designated as being permanently invested outside the U.S. If the Company changes its plans, it may be required to accrue and pay U.S. taxes to repatriate these funds. A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows: Six Months Ended June 30, 2015 2014 (Dollars in thousands) Balance at beginning of year $ 7,511 $ 4,950 Additions based on tax positions taken in prior years 58 192 Additions based on tax positions taken in the current year 570 447 Reduction based on tax positions taken in prior years (988 ) — Balance at end of year $ 7,151 $ 5,589

Note 12 - Subsequent Events

Note 12 - Subsequent Events	6 Months Ended
	Jun. 30, 2015
Subsequent Events [Abstract]
Subsequent Events [Text Block]	NOTE 12 — SUBSEQUENT EVENTS Amatitlan refinancing On July 31, 2015, the Company finalized and closed a 12-year limited-recourse Cash dividend On August 3, 2015, the Company’s Board of Directors declared, approved and authorized payment of a quarterly dividend of $2.9 million ($0.06 per share) to all holders of the Company’s issued and outstanding shares of common stock on August 18, 2015, payable on September 2, 2015.

Accounting Policies, by Policy

Accounting Policies, by Policy (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	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 contain all information and notes required by U.S. GAAP for annual financial statements. In the opinion of management, these unaudited condensed consolidated interim financial statements reflect all adjustments, which include normal recurring adjustments, necessary for a fair statement of the Company’s consolidated financial position as of June 30, 2015, the consolidated results of operations and comprehensive income (loss) for the six-month periods ended June 30, 2015 and 2014 and the consolidated cash flows for the six-month periods ended June 30, 2015 and 2014. 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 six-month period ended June 30, 2015 are not necessarily indicative of the results to be expected for the year ending December 31, 2015. These condensed 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-K for the year ended December 31, 2014. The condensed consolidated balance sheet data as of December 31, 2014 was derived from the audited consolidated financial statements for the year ended December 31, 2014, but does not include all disclosures required by U.S. GAAP.
Rounding [Policy Text Block]	Dollar amounts, except per share data, in the notes to these financial statements are rounded to the closest $1,000.
Receivables and Portions of Securitizations that can be Prepaid at Potential Loss, Policy [Policy Text Block]	OFC Senior Secured Notes prepayment In June 2015, the Company repurchased $30.6 million aggregate principal amount of our OFC Senior Secured Notes from the OFC noteholders. As a result of the repurchase, the Company recognized a loss of $1.7 million, including amortization of deferred financing cost of $0.5 million, which is included in other non-operating income (expense), net in the consolidated statements of operations and comprehensive income for the three and six months ended June 30, 2015
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]	Northleaf transaction On April 30, 2015, Ormat Nevada Inc. (“Ormat Nevada”), a wholly-owned subsidiary of the Company, closed the sale of approximately 36.75% of the aggregate membership interests in ORPD LLC (“ORPD”), a new holding company and subsidiary of Ormat Nevada, that indirectly owns the Puna geothermal power plant in Hawaii, the Don A. Campbell geothermal power plant in Nevada, and nine power plant units across three recovered energy generation assets known as OREG 1, OREG 2 and OREG 3 to Northleaf Geothermal Holdings, LLC for $162.3 million. The net proceeds to the Company were $156.8 million after payment of $5.5 million of transaction costs. The sale was made under the Agreement for Purchase of Membership Interests dated February 5, 2015. This transaction closed on April 30, 2015 and resulted in a taxable gain in the U.S. of approximately $102.1 million, for which the Company will utilize a portion of its Net Operating Loss (“NOL”) and tax credit carryforwards to fully offset the tax impact of the gain. Subsequent to closing the transaction, the Company maintained control of ORPD and as such continue to consolidate the entity with non-controlling interest being recorded. Consequently, the Company recorded the net proceeds from the issuance of membership interests as an increase to additional paid-in capital of $71.3 million and non-controlling interests of $85.5 million. See Note 11 for tax details.
Share Exchange Transaction Policy [Policy Text Block]	Share exchange transaction On February 12, 2015, the Company completed the share exchange transaction with its then-parent entity, Ormat Industries Ltd. ("OIL") following which, the Company became a noncontrolled public company and its public float increased from approximately 40% to approximately 76% of its total shares outstanding. Under the terms of the share exchange, OIL shareholders received 0.2592 shares in the company for each share in OIL, or an aggregate of approximately 30.2 million shares, reflecting a net issuance of approximately 3.0 million shares (after deducting the 27.2 million shares that OIL held in the Company). Consequently, the number of total shares of the Company increased from approximately 45.5 million shares to approximately 48.5 million shares as of the closing of the share exchange. In exchange, the Company also received $15.4 million in cash, $0.6 million in other assets and $12.1 million in land and buildings and assumed $0.5 million in liabilities. OIL's principal business purpose was to hold its interest in the Company and the transaction resulted in a transfer of non-material assets from OIL to the Company. Therefore, it does not represent a change in reporting entity and the Company recognized the transfer of net assets at their carrying value as presented in OIL's financial statements. Any activities of OIL will be accounted for prospectively by the Company. OFC 2 loan prepayment On June 20, 2014, Phase I of the Tuscarora Facility achieved Project Completion under the OFC 2 Note Purchase Agreement. In accordance with the terms of the Note Purchase Agreement and following recalibration of the financing assumptions, the loan amount was adjusted through a principal prepayment of $4.3 million.
Solar Project Sale, Policy [Policy Text Block]	Solar project sale On March 26, 2014, the Company signed an agreement with RET Holdings, LLC to sell the Heber Solar project in Imperial County, California for $35.25 million. The Company received the first payment of $15.0 million during the first quarter of 2014 and the second payment for the remaining $20.25 million in the second quarter of 2014. The Company recognized pre-tax gain of approximately $7.6 million in the second quarter of 2014.
Comprehensive Income, Policy [Policy Text Block]	Other comprehensive income For the six months ended June 30, 2015 and 2014, the Company classified $15,000 and $72,000, respectively, from accumulated other comprehensive income, of which $25,000 and $116,000, respectively, were recorded to reduce interest expense and $10,000 and $44,000, respectively, were recorded against the income tax provision, in the condensed consolidated statements of operations and comprehensive income. For the three months ended June 30, 2015 and 2014, the Company classified $8,000 and $36,000, respectively, from accumulated other comprehensive income, of which $14,000 and $58,000, respectively, were recorded to reduce interest expense and $5,000 and $22,000, respectively, were recorded against the income tax provision, in the condensed consolidated statements of operations and comprehensive income.
Exploratory Drilling Costs Capitalization and Impairment, Policy [Policy Text Block]	Write-off of unsuccessful exploration activities There were no write-offs of unsuccesful exploration activities for the three months ended June 30, 2015. Write-off of unsuccessful activities for the three and six months ended June 30, 2014, was $8.1 million. This represents the write-off of exploration costs related to the Company’s exploration activities in the Wister site in California, which the Company determined in the second quarter of 2014 would not support commercial operations.
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 June 30, 2015 and December 31, 2014, the Company had deposits totaling $49,931,000 and $23,488,000, respectively, in seven U.S. financial institutions that were federally insured up to $250,000 per account. At June 30, 2015 and December 31, 2014, the Company’s deposits in foreign countries amounted to approximately $22,796,000 and $24,304,000, respectively. At June 30, 2015 and December 31, 2014, accounts receivable related to operations in foreign countries amounted to approximately $33,024,000 and $21,935,000, respectively. At June 30, 2015 and December 31, 2014, accounts receivable from the Company’s primary customers amounted to approximately 59.5% and 69.0%, respectively, of the Company’s accounts receivable. Sierra Pacific Power Company and Nevada Power Company (subsidiaries of NV Energy, Inc.) accounted for 20.0% and 17.4% of the Company’s total revenue for the three months ended June 30, 2015 and 2014, respectively and 21.8% and 17.5% for the six months ended June 30, 2015 and 2014, respectively. Southern California Edison accounted for 10.3% and 13.5% of the Company’s total revenue for the three months ended June 30, 2015 and 2014, respectively, and 9.7% and 12.7% for the three months ended June 30, 2015 and 2014, respectively. Kenya Power and Lighting Co. Ltd. accounted for 15.4% and 16.9% of the Company’s total revenue for the three months ended June 30, 2015 and 2014, respectively and 16.5% and 15.6% for the six months ended June 30, 2015 and 2014, respectively. The Company performs ongoing credit evaluations of its customers’ financial condition. The Company has historically been able to collect on all of its receivable balances, and accordingly, no provision for doubtful accounts has been made.
New Accounting Pronouncements, Policy [Policy Text Block]	New accounting pronouncements effective in the six-month period ended June 30, 2015 Service Concession Arrangements In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-05, Service Concession Arrangements, Topic 853. The update provides that an operating entity should not account for a service concession arrangement within the scope of this update as a lease in accordance with Topic 840, Leases. The amendments also specify that the infrastructure used in a service concession arrangement should not be recognized as property, plant, and equipment of the operating entity. A service concession arrangement is an arrangement between a public-sector entity grantor and an operating entity under which the operating entity operates the grantor’s infrastructure and may provide the construction, upgrading, or maintenance services of the grantor’s infrastructure. The amendments apply to an operating entity of a service concession arrangement entered into with a public-sector entity grantor when the arrangement meets both of the following conditions: (1) the grantor controls or has the ability to modify or approve the services that the operating entity must provide with the infrastructure, to whom it must provide them, and at what price and (2) The grantor controls, through ownership, beneficial entitlement, or otherwise, any residual interest in the infrastructure at the end of the term of the arrangement. The guidance was applied on a modified retrospective basis to service concession arrangements in existence at January 1, 2015. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements. New accounting pronouncements effective in future periods Amendments to Fair Value Measurement In June 2015, the FASB issued ASU 2015-10, Amendment to Fair Value Measurement, Subtopic 82 0-10. The amendment provides that the reporting entity shall disclose for each class of assets and liabilities measured at fair value in the statement of financial position the following information: for recurring fair value measurements, the fair value measurement at the end of the reporting period, and for non-recurring fair vale measurement, the fair value measurement at the relevant measurement date and the reason for the measurement. The amendments in this update are effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. The Company is currently evaluating the potential impact, if any, of the adoption of this update on its consolidated financial statements. Amendments to the Consolidation A nalysis In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis, Topic 810. The update provides that all reporting entities that hold a variable interest in other legal entities will need to re-evaluate their consolidation conclusions and potentially revise their disclosures. This amendment affects both variable interest entity (“VIE”) and voting interest entity (“VOE”) consolidation models. The update does not change the general order in which the consolidation models are applied. A reporting entity that holds an economic interest in, or is otherwise involved with, another legal entity (has a variable interest) should first determine if the VIE model applies, and if so, whether it holds a controlling financial interest under that model. If the entity being evaluated for consolidation is not a VIE, then the VOE model should be applied to determine whether the entity should be consolidated by the reporting entity. Since consolidation is only assessed for legal entities, the determination of whether there is a legal entity is important. It is often clear when the entity is incorporated, but unincorporated structures can also be legal entities and judgment may be required to make that determination. The update contains a new example that highlights the judgmental nature of this legal entity determination. The update is effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. The Company is currently evaluating the potential impact, if any, of the adoption of this update on its consolidated financial statements. Simplifying the Presentation of Debt Costs In April 2015, the FASB issued ASU 2015 -03, Interest-Imputation of Interest: Simplifying the Presentation of Debt Costs, Subtopic 835-30. The update provides that debt issuance costs related to a recognized debt liability be presented in the balance sheet as direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted. The Company plans to adopt this update in its interim period beginning January 1, 2016 and expects the potential impact to be a reclassification of the debt issuance costs totaling $21.7 million as of June 30, 2015 . Revenues from Contracts with Customers In May 2014, the FASB issued ASU 2014-09, Revenues from Contracts with Customers, Topic 606, which was a joint project of the FASB and the International Accounting Standards Board to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. The update provides that an entity should recognize revenue 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, an entity is required to apply each of the following steps: (1) identify the contract(s) with the customer; (2) identify the performance obligations in the contracts; (3) determine the transaction price; (4) allocate the transaction price to the performance obligation in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. The amendments in this update are effective for annual reporting periods beginning after December 15, 2017 , including interim periods within that reporting period. Early adoption is not permitted. The Company is currently evaluating the potential impact, if any, of the adoption of these amendments on its consolidated financial statements.

Note 3 - Inventories (Tables)

Note 3 - Inventories (Tables)	6 Months Ended
	Jun. 30, 2015
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	June 30, December 31, 2015 2014 (Dollars in thousands) Raw materials and purchased parts for assembly $ 341 $ 4,840 Self-manufactured assembly parts and finished products 16,060 12,090 Total $ 16,401 $ 16,930

Note 4 - Unconsolidated Inves22

Note 4 - Unconsolidated Investments (Tables)	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments [Table Text Block]	June 30, December 31, 2015 2014 (Dollars in thousands) Sarulla $ (5,215 ) $ (3,617 )

Note 5 - Fair Value of Financ23

Note 5 - Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	June 30, 2015 Fair Value Carrying Value at June 30, 2015 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Current assets: Cash equivalents (including restricted cash accounts) $ 164,053 $ 164,053 $ 164,053 $ — $ — Derivatives: Swap transaction on natural gas price (1) — — — — — Currency forward contracts (2) 707 707 707 Liabilities: Current liabilities: Derivatives: Swap transaction on natural gas price (1) (11 ) (11 ) — (11 ) — Currency forward contracts (2) (2,899 ) (2,899 ) — (2,899 ) — $ 161,850 $ 161,850 $ 164,053 $ (2,203 ) $ — December 31, 2014 Fair Value Carrying Value at December 31, 2014 Total Level 1 Level 2 Level 3 (Dollars in thousands) Assets Current assets: Cash equivalents (including restricted cash accounts) $ 85,076 $ 85,076 $ 85,076 $ — $ — Derivatives: Swap transaction on natural gas price (1) 4,129 4,129 — 4,129 — Liabilities: Current liabilities: Derivatives: Currency forward contracts (2) (2,882 ) (2,882 ) — (2,882 ) — $ 86,323 $ 86,323 $ 85,076 $ 1,247 $ —
Derivative Instruments, Gain (Loss) [Table Text Block]	Amount of recognized gain (loss) Derivatives not designated as Location of recognized gain Three Months Ended June 30, Six Months Ended June 30, hedging instruments (loss) 2015 2014 2015 2014 Swap transaction on oil price Electricity revenue — (679 ) — 228 Swap transactions on natural gas price Electricity revenue 81 372 398 (2,904 ) Currency forward contracts Foreign currency translation and transaction gains (losses) (967 ) 223 (2,218 ) (8 ) $ (886 ) $ (84 ) $ (1,820 ) $ (2,684 )
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]	Fair Value Carrying Amount June 30, 2015 December 31, 2014 June 30, 2015 December 31, 2014 (Dollars in millions) (Dollars in millions) Olkaria III Loan - DEG $ 28.2 $ 32.2 $ 27.6 $ 31.6 Olkaria III Loan - OPIC 267.5 279.4 273.6 282.6 Senior Secured Notes: Ormat Funding Corp. ("OFC") 32.4 71.4 33.3 67.2 OrCal Geothermal Inc. ("OrCal") 52.2 55.5 51.8 55.1 OFC 2 LLC ("OFC 2") 232.3 238.8 268.1 272.5 Senior Unsecured Bonds 267.3 265.4 250.1 250.4 Loan from institutional investors 8.1 12.2 8.0 11.9
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]	Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III - DEG $ — $ — $ 28.2 $ 28.2 Olkaria III - OPIC — — 267.5 267.5 Senior Secured Notes: OFC — 32.4 — 32.4 OrCal — — 52.5 52.5 OFC 2 — — 232.3 232.3 Senior unsecured bonds — — 267.3 267.3 Loan from institutional investors — — 8.1 8.1 Other long-term debt — 8.3 — 8.3 Revolving credit lines with banks — — — — Deposits 15.8 — — 15.8 Level 1 Level 2 Level 3 Total (Dollars in millions) Olkaria III Loan - DEG $ — $ — $ 32.2 $ 32.2 Olkaria III Loan - OPIC — — 279.4 279.4 Senior Secured Notes: OFC — 71.4 — 71.4 OrCal — — 55.5 55.5 OFC 2 — — 238.8 238.8 Senior unsecured bonds — — 265.4 265.4 Loan from institutional investors — — 12.2 12.2 Other long-term debt — 10.0 — 10.0 Revolving lines of credit — 20.3 — 20.3 Deposits 17.3 — — 17.3

Note 7 - Interest Expense, Net

Note 7 - Interest Expense, Net (Tables)	6 Months Ended
	Jun. 30, 2015
Interest Expense Disclosure [Abstract]
Schedule of Other Nonoperating Expense, by Component [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Interest related to sale of tax benefits $ 2,807 $ 3,669 $ 4,687 $ 6,248 Interest expense 17,025 18,838 33,920 37,229 Less — amount capitalized (973 ) (435 ) (1,920 ) (887 ) $ 18,859 $ 22,072 $ 36,687 $ 42,590

Note 8 - Earnings Per Share (Ta

Note 8 - Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Weighted average number of shares used in computation of basic earnings per share 48,881 45,606 48,063 45,545 Add: Additional shares from the assumed exercise of employee stock options 1,719 357 1,381 282 Weighted average number of shares used in computation of diluted earnings per share 50,600 45,963 49,444 45,827

Note 9 - Business Segments (Tab

Note 9 - Business Segments (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Electricity Product Consolidated (Dollars in thousands) Three Months Ended June 30, 2015: Net revenue from external customers $ 90,926 $ 49,561 $ 140,487 Intersegment revenue — 10,900 10,900 Operating income (loss) 20,920 17,723 38,643 Segment assets at period end * 2,080,209 196,341 2,276,550 * Including unconsolidated investments — — — Three Months Ended June 30, 2014: Net revenue from external customers $ 91,692 $ 35,911 $ 127,603 Intersegment revenue — 15,742 15,742 Operating income (loss) 9,521 12,809 22,330 Segment assets at period end * 2,027,211 117,718 2,144,929 * Including unconsolidated investments 3,308 — 3,308 Six Months Ended June 30, 2015: Net revenue from external customers $ 180,879 $ 79,839 $ 260,718 Intersegment revenue — 30,657 30,657 Operating income (loss) 44,874 23,620 68,494 Segment assets at period end * 2,080,209 196,341 2,276,550 * Including unconsolidated investments — — — Six Months Ended June 30, 2014: Net revenue from external customers $ 186,509 $ 83,530 $ 270,039 Intersegment revenue — 36,336 36,336 Operating income (loss) 40,439 24,462 64,901 Segment assets at period end * 2,027,211 117,718 2,144,929 * Including unconsolidated investments 3,308 — 3,308
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Revenue: Total segment revenue $ 140,487 $ 127,603 $ 260,718 $ 270,039 Intersegment revenue 10,900 15,742 30,657 36,336 Elimination of intersegment revenue (10,900 ) (15,742 ) (30,657 ) (36,336 ) Total consolidated revenue $ 140,487 $ 127,603 $ 260,718 $ 270,039 Operating income: Operating income $ 38,643 $ 22,330 $ 68,494 $ 64,901 Interest income 44 90 53 201 Interest expense, net (18,859 ) (22,072 ) (36,687 ) (42,590 ) Foreign currency translation and transaction gains (losses) (571 ) (55 ) (1,937 ) (693 ) Income attributable to sale of equity interest 4,731 6,130 10,283 12,847 Gain from sale of property, plant and equipment — 7,628 — 7,628 Other non-operating income (expense), net (1,675 ) 343 (1,392 ) 406 Total consolidated income before income taxes and equity in income of investees $ 22,313 $ 14,394 $ 38,814 $ 42,700

Note 11 - Income Taxes (Tables)

Note 11 - Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Summary of Income Tax Contingencies [Table Text Block]	Six Months Ended June 30, 2015 2014 (Dollars in thousands) Balance at beginning of year $ 7,511 $ 4,950 Additions based on tax positions taken in prior years 58 192 Additions based on tax positions taken in the current year 570 447 Reduction based on tax positions taken in prior years (988 ) — Balance at end of year $ 7,151 $ 5,589

Note 1 - General and Basis of28

Note 1 - General and Basis of Presentation (Details) - USD ($)	Apr. 30, 2015	Feb. 15, 2015	Jun. 20, 2014	Mar. 26, 2014	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Feb. 14, 2015	Feb. 11, 2015	Dec. 31, 2013
Note 1 - General and Basis of Presentation (Details) [Line Items]
Repayments of Secured Debt									$ 30,638,000	$ 12,860,000
Proceeds from Sales of Business, Affiliate and Productive Assets										35,250,000
Noncontrolling Interest, Increase from Subsidiary Equity Issuance										257,000
									$ 156,761,000
Percentage of Public Float Before Transition to Noncontrolled Public Company													40.00%
Percentage of Public Float After Transition to Noncontrolled Public Company		76.00%
Share Exchange Shares Granted Per Share (in Shares)		0.2592
Common Stock, Shares, Issued (in Shares)		3,000,000			49,002,583	49,002,583			49,002,583		45,537,162
Common Stock, Shares, Outstanding (in Shares)		48,500,000			49,002,583	49,002,583			49,002,583		45,537,162	45,500,000
Sale of Stock, Consideration Received on Transaction		$ 15,400,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						$ 8,000	$ 36,000		$ 15,000	72,000
Interest Expense						18,859,000	22,072,000		36,687,000	42,590,000
Income Tax Expense (Benefit)						6,056,000	4,967,000		11,515,000	11,287,000
Exploration Abandonment and Impairment Expense							8,107,000		174,000	8,107,000
Cash, Cash Equivalents, and Short-term Investments					$ 137,665,000	137,665,000	80,120,000		137,665,000	80,120,000	$ 40,230,000			$ 57,354,000
Accounts Receivable, Net, Current					58,089,000	58,089,000			58,089,000		48,609,000
Provision for Doubtful Accounts									0
UNITED STATES
Note 1 - General and Basis of Presentation (Details) [Line Items]
Cash, Cash Equivalents, and Short-term Investments					49,931,000	49,931,000			49,931,000		23,488,000
Foreign Countries [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Cash, Cash Equivalents, and Short-term Investments					22,796,000	22,796,000			22,796,000		24,304,000
Accounts Receivable, Net, Current					33,024,000	33,024,000			33,024,000		$ 21,935,000
Additional Paid-in Capital [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
									71,291,000
Noncontrolling Interest [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance										257,000
									85,470,000
Maximum [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Cash, FDIC Insured Amount														$ 250,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Interest Expense						14,000	58,000		25,000	116,000
Income Tax Expense (Benefit)						$ 5,000	$ 22,000		$ 10,000	$ 44,000
Northleaf Geothermal Holdings (Northleaf) [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Equity Method Investment, Ownership Percentage	36.75%
Number of Power Plants Acquired	9
Recovered Energy Generation Assets	3
Business Combination, Consideration Transferred	$ 162,300,000
Proceeds from Sales of Business, Affiliate and Productive Assets	156,800,000
Business Acquisition, Transaction Costs	5,500,000
Business Combination, Bargain Purchase, Gain Recognized, Amount	102,100,000
Northleaf Geothermal Holdings (Northleaf) [Member] | Additional Paid-in Capital [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	71,300,000
Northleaf Geothermal Holdings (Northleaf) [Member] | Noncontrolling Interest [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
	$ 85,500,000
Primary Customers [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Concentration Risk, Percentage									59.50%		69.00%
Hawaii Electric Light Company [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Concentration Risk, Percentage						20.00%	17.40%		21.80%	17.50%
Southern California Edison Company [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Concentration Risk, Percentage						13.50%	10.30%		9.70%	12.70%
Kenya Power And Lighting Co Limited [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Concentration Risk, Percentage						15.40%	16.90%		16.50%	15.60%
Heber Solar Project [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Proceeds from Sales of Business, Affiliate and Productive Assets							$ 20,250,000	$ 15,000,000
Sales Price of Disposition				$ 35,250,000
Gain (Loss) on Sale of Project							$ 7,600,000
Aggregate Shares Issued [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Conversion of Stock, Shares Issued (in Shares)		30,200,000
Shares Issued to Self, Deducted [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Conversion of Stock, Shares Issued (in Shares)		27,200,000
Sale of Stock, Other Assets Received [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Sale of Stock, Consideration Received Per Transaction		$ 600,000
Sale of Stock, Land and Buildings Received [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Sale of Stock, Consideration Received Per Transaction		12,100,000
Sale of Stock, Liabilities Assumed [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Sale of Stock, Consideration Received Per Transaction		$ 500,000
Ormat Funding Corp [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Repayments of Secured Debt					30,600,000
Gains (Losses) on Extinguishment of Debt					$ 1,700,000
Ormat Funding Corp [Member] | Other Nonoperating Income (Expense) [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Amortization of Financing Costs									$ 500,000
OFC Two Senior Secured Notes [Member]
Note 1 - General and Basis of Presentation (Details) [Line Items]
Repayments of Secured Debt			$ 4,300,000

Note 2 - New Accounting Prono29

Note 2 - New Accounting Pronouncements (Details) $ in Millions	Jun. 30, 2015USD ($)
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Debt Issuance Costs	$ 21.7

Note 3 - Inventories (Details)

Note 3 - Inventories (Details) - Inventories, Current - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Inventories, Current [Abstract]
Raw materials and purchased parts for assembly	$ 341	$ 4,840
Self-manufactured assembly parts and finished products	16,060	12,090
Total	$ 16,401	$ 16,930

Note 4 - Unconsolidated Inves31

Note 4 - Unconsolidated Investments (Details)	Jun. 04, 2014USD ($)	May. 23, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	May. 16, 2014USD ($)
Note 4 - Unconsolidated Investments (Details) [Line Items]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			$ 23,000		$ 46,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			$ 15,273,000	$ 9,313,000	25,540,000	$ 31,102,000
Sarulla [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Number of Commercial Lenders in Funding Consortium							6
Sarulla [Member] | Lenders Consortium [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Senior Notes							$ 1,170,000,000
Sarulla [Member] | Interest Rate Swap [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion					3,000,000
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax					$ 400,000
Sarulla [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share			12.75%		12.75%
Expected Power Generating Capacity					330
Contract Effective Date					Apr. 4, 2013
Power Plant Usage Agreement Term					30 years
Number Of Phases Of Construction					3
Power Utilization					110
Period To Start Remaining Phases Of Construction After Commencement Of First Phase					18 months
Supply Commitment, Remaining Minimum Amount Committed			$ 255,600,000		$ 255,600,000
Payments to Acquire Projects					0
Sarulla [Member] | Intersegment Eliminations [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest					1,600,000
Sarulla [Member] | Lenders Consortium [Member] | Subject to Fixed Interest Rate [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Proceeds from Issuance of Senior Long-term Debt		$ 100,000,000
Sarulla [Member] | Lenders Consortium [Member] | Subject to LIBOR based Interest Rate [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Senior Notes							$ 1,070,000,000
Sarulla [Member] | Interest Rate Swap [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax			$ 7,700,000		$ 7,700,000
Sarulla [Member] | Interest Rate Swap [Member] | Lenders Consortium [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Proceeds from Issuance of Senior Long-term Debt	$ 50,000,000
Sarulla [Member] | Interest Rate Swap [Member] | Lenders Consortium [Member] | Subject to Fixed LIBOR Interest Rate [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Senior Notes				$ 960,000,000		$ 960,000,000
Sarulla [Member] | Interest Rate Swap [Member] | London Interbank Offered Rate (LIBOR) [Member] | Lenders Consortium [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.4565%

Note 4 - Unconsolidated Inves32

Note 4 - Unconsolidated Investments (Details) - Unconsolidated Investments Mainly in Power Plants - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Schedule of Equity Method Investments [Line Items]
Sarulla	$ (5,215)	$ (3,617)	$ 3,308
Sarulla [Member]
Schedule of Equity Method Investments [Line Items]
Sarulla	$ (5,215)	$ (3,617)

Note 5 - Fair Value of Financ33

Note 5 - Fair Value of Financial Instruments (Details) $ in Thousands, mJ in Millions	May. 14, 2015mJ$ / mJ	Mar. 06, 2014mJ$ / mJ	Oct. 16, 2013mJMWh$ / mJ$ / bblbbl	Sep. 03, 2013mJ$ / mJ	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax (in Dollars)					$ 23		$ 46
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments (in Dollars)					$ 100	$ (300)
NGI Swap Contract [Member]
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure (in Millijoules) | mJ	2.4	2.2	4.2	4.4
Underlying, Derivative Energy Measure | $ / mJ	3	4.95	4.103	4.035
New York Harbor ULSD Swap Contract [Member]
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]
Underlying, Derivative Energy Measure | $ / bbl			125.15
Derivative, Nonmonetary Notional Amount, Volume (in Barrels (of Oil)) | bbl			275,000
Fluctuation in Energy Rate (in Megawatt-hours) | MWh			25
Interest Rate Cap [Member]
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax (in Dollars)							$ (400)	$ 2,700

Note 5 - Fair Value of Financ34

Note 5 - Fair Value of Financial Instruments (Details) - Financial Assets and Liabilities at Fair Value - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cost or Amortized Cost		$ 137,665	$ 40,230
Fair Value		164,053	85,076
Derivatives:
Fair Value		161,850	86,323
Forward Contracts [Member]
Derivatives:
Fair Value	[1]	707
Derivatives:
Fair Value	[1]	$ (2,899)	(2,882)
Natural Gas Price Swap [Member]
Derivatives:
Fair Value	[2]		4,129
Derivatives:
Fair Value	[2]	$ (11)
Reported Value Measurement [Member]
Current assets:
Cost or Amortized Cost		164,053	85,076
Derivatives:
Cost or Amortized Cost		161,850	86,323
Reported Value Measurement [Member] | Forward Contracts [Member]
Derivatives:
Cost or Amortized Cost	[1]	707
Derivatives:
Cost or Amortized Cost	[1]	$ (2,899)	(2,882)
Reported Value Measurement [Member] | Natural Gas Price Swap [Member]
Derivatives:
Cost or Amortized Cost	[2]		4,129
Derivatives:
Cost or Amortized Cost	[2]	$ (11)
Fair Value, Inputs, Level 1 [Member]
Current assets:
Fair Value		164,053	85,076
Derivatives:
Fair Value		$ 164,053	$ 85,076
Fair Value, Inputs, Level 1 [Member] | Forward Contracts [Member]
Derivatives:
Fair Value	[1]
Fair Value, Inputs, Level 1 [Member] | Natural Gas Price Swap [Member]
Derivatives:
Fair Value	[2]
Derivatives:
Fair Value	[2]
Fair Value, Inputs, Level 2 [Member]
Derivatives:
Fair Value		$ (2,203)	$ 1,247
Fair Value, Inputs, Level 2 [Member] | Forward Contracts [Member]
Derivatives:
Fair Value	[1]	707
Derivatives:
Fair Value	[1]	$ (2,899)	(2,882)
Fair Value, Inputs, Level 2 [Member] | Natural Gas Price Swap [Member]
Derivatives:
Fair Value	[2]		$ 4,129
Derivatives:
Fair Value	[2]	$ (11)
Fair Value, Inputs, Level 3 [Member] | Forward Contracts [Member]
Derivatives:
Fair Value	[1]
Fair Value, Inputs, Level 3 [Member] | Natural Gas Price Swap [Member]
Derivatives:
Fair Value	[2]
Derivatives:
Fair Value	[2]
[1]	These amounts relate to derivatives which represent currency forward contracts valued primarily based on observable inputs, including forward and spot prices for currencies, netted against contracted rates and then multiplied against notional amounts, and are included within "accounts payable and accrued expenses" on June 30, 2015 and December 31, 2014, in the consolidated balance sheet with the corresponding gain or loss being recognized within "foreign currency translation and transaction losses" in the consolidated statement of operations and comprehensive income.
[2]	This amount relates to a swap contract on natural gas prices, valued primarily based on observable inputs, including forward and spot prices for related commodity indices, and is included within "prepaid expenses and other" and "accounts payable and accrued expenses" on June 30, 2015 and December 31, 2014, respectively, in the consolidated balance sheets with the corresponding gain or loss being recognized within "electricity revenue" in the consolidated statement of operations and comprehensive income.

Note 5 - Fair Value of Financ35

Note 5 - Fair Value of Financial Instruments (Details) - Amounts of Gain (Loss) Recognized in Condensed Consolidated Statements on Derivative Instruments not Designated as Hedges - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	$ (886)	$ (84)	$ (1,820)	$ (2,684)
Electricity Revenues [Member] | Crude Oil Price Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized		(679)		228
Electricity Revenues [Member] | Natural Gas Price Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	81	372	398	(2,904)
Foreign Currency Gain (Loss) [Member] | Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	$ (967)	$ 223	$ (2,218)	$ (8)

Note 5 - Fair Value of Financ36

Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Long-term Debt Approximates its Carrying Amount, Exceptions - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Senior Secured Notes:
Loan from institutional investors	$ 8.3	$ 10
Olkaria III - DEG [Member]
Senior Secured Notes:
Loan from institutional investors	28.2	32.2
Olkaria III - DEG [Member] | Estimate of Fair Value Measurement [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Long-term Debt Approximates its Carrying Amount, Exceptions [Line Items]
Loan	28.2	32.2
Olkaria III - DEG [Member] | Reported Value Measurement [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Long-term Debt Approximates its Carrying Amount, Exceptions [Line Items]
Loan	27.6	31.6
Olkaria III - OPIC [Member]
Senior Secured Notes:
Loan from institutional investors	267.5	279.4
Olkaria III - OPIC [Member] | Estimate of Fair Value Measurement [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Long-term Debt Approximates its Carrying Amount, Exceptions [Line Items]
Loan	267.5	279.4
Olkaria III - OPIC [Member] | Reported Value Measurement [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Long-term Debt Approximates its Carrying Amount, Exceptions [Line Items]
Loan	273.6	282.6
Ormat Funding Corp [Member]
Senior Secured Notes:
Loan from institutional investors	32.4	71.4
Ormat Funding Corp [Member] | Estimate of Fair Value Measurement [Member]
Senior Secured Notes:
Senior Secured Notes	32.4	71.4
Ormat Funding Corp [Member] | Reported Value Measurement [Member]
Senior Secured Notes:
Senior Secured Notes	33.3	67.2
Orcal Geothermal Inc [Member]
Senior Secured Notes:
Loan from institutional investors	52.5	55.5
Orcal Geothermal Inc [Member] | Estimate of Fair Value Measurement [Member]
Senior Secured Notes:
Senior Secured Notes	52.2	55.5
Orcal Geothermal Inc [Member] | Reported Value Measurement [Member]
Senior Secured Notes:
Senior Secured Notes	51.8	55.1
OFC Two Senior Secured Notes [Member]
Senior Secured Notes:
Loan from institutional investors	232.3	238.8
OFC Two Senior Secured Notes [Member] | Estimate of Fair Value Measurement [Member]
Senior Secured Notes:
Senior Secured Notes	232.3	238.8
OFC Two Senior Secured Notes [Member] | Reported Value Measurement [Member]
Senior Secured Notes:
Senior Secured Notes	268.1	272.5
Senior Unsecured Bonds Member
Senior Secured Notes:
Loan from institutional investors	267.3	265.4
Senior Unsecured Bonds Member | Estimate of Fair Value Measurement [Member]
Senior Secured Notes:
Senior Unsecured Bonds	267.3	265.4
Senior Unsecured Bonds Member | Reported Value Measurement [Member]
Senior Secured Notes:
Senior Unsecured Bonds	250.1	250.4
Institutional Investors [Member]
Senior Secured Notes:
Loan from institutional investors	8.1	12.2
Institutional Investors [Member] | Estimate of Fair Value Measurement [Member]
Senior Secured Notes:
Loan from institutional investors	8.1	12.2
Institutional Investors [Member] | Reported Value Measurement [Member]
Senior Secured Notes:
Loan from institutional investors	$ 8	$ 11.9

Note 5 - Fair Value of Financ37

Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	$ 8.3	$ 10
Senior Secured Notes:
Revolving credit lines with banks		20.3
Deposits	15.8	17.3
Olkaria III - DEG [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	28.2	32.2
Olkaria III - OPIC [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	267.5	279.4
Ormat Funding Corp [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	32.4	71.4
Orcal Geothermal Inc [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	52.5	55.5
OFC Two Senior Secured Notes [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	232.3	238.8
Senior Unsecured Bonds Member
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	267.3	265.4
Institutional Investors [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	8.1	12.2
Fair Value, Inputs, Level 1 [Member]
Senior Secured Notes:
Deposits	15.8	17.3
Fair Value, Inputs, Level 2 [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	8.3	10
Senior Secured Notes:
Revolving credit lines with banks		20.3
Fair Value, Inputs, Level 2 [Member] | Ormat Funding Corp [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	32.4	71.4
Fair Value, Inputs, Level 3 [Member] | Olkaria III - DEG [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	28.2	32.2
Fair Value, Inputs, Level 3 [Member] | Olkaria III - OPIC [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	267.5	279.4
Fair Value, Inputs, Level 3 [Member] | Orcal Geothermal Inc [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	52.5	55.5
Fair Value, Inputs, Level 3 [Member] | OFC Two Senior Secured Notes [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	232.3	238.8
Fair Value, Inputs, Level 3 [Member] | Senior Unsecured Bonds Member
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	267.3	265.4
Fair Value, Inputs, Level 3 [Member] | Institutional Investors [Member]
Note 5 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments [Line Items]
Fair value levels-secured,unsecured and long term debt	$ 8.1	$ 12.2

Note 6 - Stock-Based Compensa38

Note 6 - Stock-Based Compensation (Details) - shares	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2004	May. 31, 2012
2004 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		3,750,000
Share Based Compensation Arrangement By Share Based Payment Award Awards Exercise Period		10 years
2012 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			4,000,000
2012 Stock Incentive Plan [Member] | Officer [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	400,000
Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche One [Member] | 2004 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		24 months
Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche One [Member] | 2012 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	24 months
Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche Two [Member] | 2004 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		36 months
Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche Two [Member] | 2012 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	36 months
Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche Three [Member] | 2004 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		48 months
Stock Options And Stock Appreciation Rights [Member] | Share-based Compensation Award, Tranche Three [Member] | 2012 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	48 months
Employee Stock Option [Member] | 2004 Stock Incentive Plan [Member] | Non Employee Director [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		1 year
Employee Stock Option [Member] | 2012 Stock Incentive Plan [Member] | Non Employee Director [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Minimum [Member] | 2012 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	6 years
Maximum [Member] | 2012 Stock Incentive Plan [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years

Note 7 - Interest Expense, Ne39

Note 7 - Interest Expense, Net (Details) - Components of Interest Expense - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Components of Interest Expense [Abstract]
Interest related to sale of tax benefits	$ 2,807	$ 3,669	$ 4,687	$ 6,248
Interest expense	17,025	18,838	33,920	37,229
Less — amount capitalized	(973)	(435)	(1,920)	(887)
	$ 18,859	$ 22,072	$ 36,687	$ 42,590

Note 8 - Earnings Per Share (De

Note 8 - Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Stock Compensation Plan [Member]
Note 8 - Earnings Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	636,487	3,085,713	765,424	3,265,338

Note 8 - Earnings Per Share (41

Note 8 - Earnings Per Share (Details) - Reconciliation of Number of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Share - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of Number of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Share [Abstract]
Weighted average number of shares used in computation of basic earnings per share	48,881	45,606	48,063	45,545
Add:
Additional shares from the assumed exercise of employee stock options	1,719	357	1,381	282
Weighted average number of shares used in computation of diluted earnings per share	50,600	45,963	49,444	45,827

Note 9 - Business Segments (Det

Note 9 - Business Segments (Details)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Number of Reportable Segments	2

Note 9 - Business Segments (D43

Note 9 - Business Segments (Details) - Summarized Financial Information Concerning Reportable Segments - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net revenues from external customers	$ 140,487	$ 127,603	$ 260,718	$ 270,039
Intersegment revenues	140,487	127,603	260,718	270,039
Operating income	38,643	22,330	68,494	64,901
Segment assets at period end *	2,276,550	2,144,929	2,276,550	2,144,929	$ 2,121,556
* Including unconsolidated investments	(5,215)	3,308	(5,215)	3,308	$ (3,617)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment revenues	10,900	15,742	30,657	36,336
Electricity Member
Segment Reporting Information [Line Items]
Net revenues from external customers	90,926	91,692	180,879	186,509
Operating income	20,920	9,521	44,874	40,439
Segment assets at period end *	2,080,209	2,027,211	2,080,209	2,027,211
* Including unconsolidated investments		3,308		3,308
Product Segment [Member]
Segment Reporting Information [Line Items]
Net revenues from external customers	49,561	35,911	79,839	83,530
Operating income	17,723	12,809	23,620	24,462
Segment assets at period end *	196,341	117,718	196,341	117,718
Product Segment [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment revenues	$ 10,900	$ 15,742	$ 30,657	$ 36,336

Note 9 - Business Segments (D44

Note 9 - Business Segments (Details) - Reconciling Information Between Reportable Segments and Consolidated Totals - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Revenue	$ 140,487	$ 127,603	$ 260,718	$ 270,039
Operating income:
Operating income	38,643	22,330	68,494	64,901
Interest income	44	90	53	201
Interest expense, net	(18,859)	(22,072)	(36,687)	(42,590)
Foreign currency translation and transaction gains (losses)	(571)	(55)	(1,937)	(693)
Income attributable to sale of equity interest	4,731	6,130	10,283	12,847
Gain from sale of property, plant and equipment		7,628	(531)	7,628
Other non-operating income (expense), net	(1,675)	343	(1,392)	406
Total consolidated income before income taxes and equity in income of investees	22,313	14,394	38,814	42,700
Total Segment Revenues [Member]
Revenue:
Revenue	140,487	127,603	260,718	270,039
Intersegment Eliminations [Member]
Revenue:
Revenue	10,900	15,742	30,657	36,336
Consolidation, Eliminations [Member]
Revenue:
Revenue	$ (10,900)	$ (15,742)	$ (30,657)	$ (36,336)

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Note 11 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent			29.70%	26.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount	$ 880,000	$ 1,098,000	$ 2,026,000
Operating Loss Carryforwards, Valuation Allowance					$ 111,300,000
Deferred Tax Assets, Investments					700,000
Deferred Tax Assets, Tax Credit Carryforwards, General Business					71,400,000
Deferred Tax Assets, Valuation Allowance					111,300,000	$ 114,800,000
Undistributed Earnings of Foreign Subsidiaries					$ 75,900,000
Investment Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Period					20 years
General Business Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Period					20 years
Domestic Tax Authority [Member]
Note 11 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards					$ 251,400,000
State and Local Jurisdiction [Member]
Note 11 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards					$ 216,500,000
Minimum [Member] | Investment Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year					2,022
Minimum [Member] | General Business Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year					2,026
Maximum [Member] | Investment Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year					2,024
Maximum [Member] | General Business Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year					2,034

Note 11 - Income Taxes (Detai46

Note 11 - Income Taxes (Details) - Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits [Abstract]
Balance at beginning of year	$ 7,511	$ 4,950
Additions based on tax positions taken in prior years	58	192
Additions based on tax positions taken in the current year	570	447
Reduction based on tax positions taken in prior years	(988)
Balance at end of year	$ 7,151	$ 5,589

Note 12 - Subsequent Events (De

Note 12 - Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 03, 2015	Jul. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Note 12 - Subsequent Events (Details) [Line Items]
Dividends, Common Stock					$ 6,830	$ 5,003
Common Stock, Dividends, Per Share, Declared (in Dollars per share)			$ 0.06	$ 0.05	$ 0.12	$ 0.11
Subsequent Event [Member]
Note 12 - Subsequent Events (Details) [Line Items]
Dividends, Common Stock	$ 2,900
Common Stock, Dividends, Per Share, Declared (in Dollars per share)	$ 0.06
Limited-Recourse Term Loan [Member] | Banco Industrial S.A. [Member] | Subsequent Event [Member]
Note 12 - Subsequent Events (Details) [Line Items]
Debt Instrument, Term		12 years
Debt Instrument, Face Amount		$ 42,000