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Note 13 - Tax Monetization Transactions (Details Textual) - USD ($) $ in Thousands |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended | 54 Months Ended | 72 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Oct. 31, 2017 | Jul. 10, 2017 | Dec. 16, 2016 | Feb. 03, 2011 | Oct. 30, 2009 | Jan. 31, 2013 | Dec. 31, 2009 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2008 | Dec. 31, 2007 | Jul. 31, 2017 | Dec. 31, 2022 | Dec. 15, 2016 | Dec. 31, 2010
Proceeds from Noncontrolling Interests |  |  |  |  |  |  |  |  | $ 2,017 | $ 1,972 | $ 1,654 |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  |  |  |  |  |  | 44,102 | 156,635 |  |  |  |  |  |
OPC LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Additional Interest in Subsidiaries |  |  |  |  |  |  |  |  | 1,932 |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  |  | (1,932) |  |  |  |  |  |  |  |
Ormat Nevada ORTP LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Additional Interest in Subsidiaries |  |  |  |  |  |  |  |  | 2,400 |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  |  | (4,051) |  |  |  |  |  |  |  |
Noncontrolling Interest [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  |  |  |  |  |  | 36,268 | 85,470 |  |  |  |  |  |
Noncontrolling Interest [Member] | OPC LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  |  | 6,537 |  |  |  |  |  |  |  |
Noncontrolling Interest [Member] | Ormat Nevada ORTP LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  |  | (6,964) |  |  |  |  |  |  |  |
Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  |  |  |  |  |  | $ 7,834 | $ 71,165 |  |  |  |  |  |
Additional Paid-in Capital [Member] | OPC LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  |  | (8,469) |  |  |  |  |  |  |  |
Additional Paid-in Capital [Member] | Ormat Nevada ORTP LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  |  | $ 2,913 |  |  |  |  |  |  |  |
Opal Geo LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Distributable Cash to Controlling Interest |  |  |  | 97.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Controlling Interests |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Controlling Interests, PTCs Not Available |  |  |  | 95.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Opal Geo LLC [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Controlling Interests | 95.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Opal Geo LLC [Member] | JPM Capital Corporation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Noncontrolling Interests |  |  |  | $ 62,100 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Distributable Cash to Nontrolling Interests |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Noncontrolling Interests |  |  |  | 99.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Noncontrolling Interests, PTCs Not Available |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Opal Geo LLC [Member] | JPM Capital Corporation [Member] | Noncontrolling Interest [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Noncontrolling Interests |  |  |  | $ 3,700 |  |  |  |  |  |  |  |  |  |  |  |  |
Opal Geo LLC [Member] | JPM Capital Corporation [Member] | Liability for Sale of Tax Benefit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Noncontrolling Interests |  |  |  | $ 58,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Opal Geo LLC [Member] | JPM Capital Corporation [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Noncontrolling Interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,000 |  |
Percentage Of Distributable Cash to Nontrolling Interests | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Income (Loss), Gain, Deduction and Credit Allocated to Noncontrolling Interests | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Opal Geo LLC [Member] | JPM Capital Corporation [Member] | Capital Unit, Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Equity Interest Sold |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Ormat Nevada ORTP LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds From Sale Of Equity Units |  |  |  |  |  |  |  |  |  |  |  | $ 63,000 | $ 71,800 |  |  |  |
Percentage Of Ownership Interests Flip Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00%
Payments for Repurchase of Redeemable Noncontrolling Interest |  |  |  |  |  | $ 18,500 |  |  |  |  |  |  |  |  |  |  |
Gain From Repurchase Of Interests At Discount |  |  |  |  |  |  |  | $ 13,300 |  |  |  |  |  |  |  |  |
Adjustments To Additional Paid In Capital Purchase Of Noncontrolling Interest |  |  |  |  |  |  |  | $ 1,100 |  |  |  |  |  |  |  |  |
Percentage Of Ownership Interests Purchased From Noncontrolling Owners |  |  |  |  | 1.50% |  |  | 1.50% |  |  |  |  |  |  |  |  |
Proceeds Sale Minority Interest |  |  |  |  | $ 24,900 |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  | $ 2,300 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Sales of Business, Affiliate and Productive Assets |  |  |  |  |  |  | $ 35,700 |  |  |  |  |  |  | $ 7,900 |  |  |
Additional Proceeds As Percentage Of Production Tax Credit |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
Ormat Nevada ORTP LLC [Member] | ORTP Transaction [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Interest in Joint Venture |  |  | $ 2,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ormat Nevada, OPC LLC [Member] | OPC Transaction [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Additional Interest in Subsidiaries |  | $ 1,900 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
DAC 2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Ownership Interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 63.25% |
Other Geothermal Power Plants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Ownership Interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Opal Geo LLC [Member] | Capital Unit, Class A [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Ownership Interests |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
OPC LLC [Member] | JPM Capital Corporation [Member] | Capital Unit, Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair Value of Equity Interest Sold |  |  |  | $ 3,000 |  |  |  |  |  |  |  |  |  |  |  |  |

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