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Note 4 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Cross Currency Interest Rate Contract [Member] | Prepaid Expenses and Other and Deposits and Other [Member] |  |
Derivatives, Cash Collateral Deposits | $ 10,400 | $ 10,600
Interest Rate Swap [Member] | Other long-term Liabilities [Member] |  |
Derivatives, Cash Collateral Deposits | $ 0 | $ 0

X
- Definition The amount of derivative cash collateral deposits. + References No definition available. + Details
Name: | ora_DerivativesCashCollateralDeposits
Namespace Prefix: | ora_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CrossCurrencyInterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=ora_PrepaidExpensesAndOtherAndDepositsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=ora_OtherLongtermLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |