The initial purchase price of the power plant that sold to a private investor by the company.

No definition available.

Name:	ora_ParternshipAgreementInitialPurchasePrice
Namespace Prefix:	ora_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of additional installments that are expected to be paid by the buyer pursuant to the partnership agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	ora_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the amount, expressed as a percentage, that the entity receives of the distributable cash flow generated by the project after the Target Flip Date and the date in which the private investor reaches its target return.

+ References

No definition available.

+ Details

Name:	ora_PartnershipAgreementPercentageOfDistributableCashFlowGenerated
Namespace Prefix:	ora_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount, expressed as a percentage, that the private investor receives of the distributable cash flow generated by the project after the Target Flip Date and the date in which the private investor reaches its target return, if not reached by Target Flip Date.

+ References

No definition available.

+ Details

Name:	ora_PartnershipAgreementPercentageOfDistributableCashFlowGeneratedToPrivateInvestorIfTargetReturnNotReached
Namespace Prefix:	ora_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

Represents the amount, expressed as a percentage, of taxable income that the entity will receive after the Target Flip Date and the date in which the private investor reaches its target return.

+ References

No definition available.

+ Details

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Namespace Prefix:	ora_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

Represents the amount, expressed as a percentage, of taxable income that the private investor will receive after the Target Flip Date and the date in which the private investor reaches its target return, if target return is not reached by the Target Flip Date.

+ References

No definition available.

+ Details

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Namespace Prefix:	ora_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount, expressed as a percentage, of taxable income that the private investor will receive after the Target Flip Date and the date in which the private investor reaches its target return, if not reached by Target Flip Date, and after the project no longer generates PTCs.

+ References

No definition available.

+ Details

Name:	ora_PartnershipAgreementPercentageOfTaxableIncomeToPrivateInvestorIfTargetReturnNotReachedNoLongerGeneratingPtcs
Namespace Prefix:	ora_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of power to be generated under contract.

+ References

No definition available.

+ Details

Name:	ora_PowerGeneratedUnderContract
Namespace Prefix:	ora_
Data Type:	dtr-types:energyItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the declared dividend will be paid, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ora_SteamboatHillsRepowerGeothermalPowerPlantMember
Namespace Prefix:
Data Type:	na
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Period Type:

Note 12 - Subsequent Events (Details Textual) $ / shares in Units, $ in Thousands			3 Months Ended
	Nov. 03, 2021 USD ($) $ / shares	Oct. 25, 2021 USD ($) MWh	Sep. 30, 2021 USD ($) $ / shares	Jun. 30, 2021 USD ($) $ / shares	Mar. 31, 2021 USD ($) $ / shares	Sep. 30, 2020 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)
Dividends, Common Stock, Total			$ 6,716	$ 6,448	$ 6,718	$ 5,559	$ 5,719	$ 5,614
Common Stock, Dividends, Per Share, Declared (in dollars per share) \| $ / shares			$ 0.11	$ 0.12	$ 0.12	$ 0.11
Subsequent Event [Member]
Dividends, Common Stock, Total	$ 6,700
Common Stock, Dividends, Per Share, Declared (in dollars per share) \| $ / shares	$ 0.12
Dividends Payable, Date of Record	Nov. 17, 2021
Dividends Payable, Date to be Paid	Dec. 03, 2021
Subsequent Event [Member] \| Ormat Nevada Inc. [Member] \| Steamboat Hills Repower Geothermal Power Plant [Member]
Power Generated Under Contract (Megawatt-Hour) \| MWh		28.4
Parternship Agreement, Initial Purchase Price		$ 38,900
Partnership Agreement, Expected Additional Installments		$ 5,300
Partnership Agreement, Percentage of Distributable Cash Flow Generated		97.50%
Partnership Agreement, Percentage of Taxable Income		95.00%
Partnership Agreement, Percentage of Distributable Cash Flow Generated to Private Investor if Target Return Not Reached		100.00%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached		99.00%
Partnership Agreement, Percentage of Taxable Income to Private Investor if Target Return Not Reached, No Longer Generating PTCs		5.00%