Note 12 - Subsequent Events	9 Months Ended
Sep. 30, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 12 — SUBSEQUENT EVENTS Cash Dividend On November 3, 2021, the Board of Directors of the Company declared, approved and authorized payment of a quarterly dividend of $6.7 million ($0.12 per share) to all holders of the Company’s issued and outstanding shares of common stock on November 17, 2021, payable on December 3, 2021. Steamboat Hills Tax Equity Transaction On October 25, 2021, one of the Company’s wholly-owned subsidiaries that indirectly owns the 28.4 MW Steamboat Hills Repower Geothermal power plant entered into a partnership agreement with a private investor. Under the transaction documents, the private investor acquired membership interests in the Steamboat Hills Repower Geothermal power plant project for an initial purchase price of approximately $38.9 million and for which it will pay additional installments that are expected to amount to approximately $5.3 million. The Company will continue to operate and maintain the power plant and will receive substantially all the distributable cash flow generated by the power plant, as described below. Under the transaction documents, prior to December 31, 2029 (“Target Flip Date”), the Company’s wholly-owned subsidiary, Ormat Nevada Inc. ("Ormat Nevada"), receives substantially all of the distributable cash flow generated by the project, while the private investor receives substantially all of the tax attributes of the project. Following the later of the Target Flip Date and the date on which the private investor reaches its target return, Ormat Nevada will receive 97.5% of the distributable cash and 95.0% of the taxable income, on a go forward basis. In the event that the private investor will not reach its target return by the Target Flip Date, then for the period between the Target Flip Date and the date on which the private investor reaches its target return, the private investor will receive 100% of the distributable cash generated by the power plant and 99% of the tax attributes as long as the project is generating Production Tax Credits ("PTCs") (and 5% of the tax attributes afterwards). On the Target Flip Date, Ormat Nevada has the option to purchase the private investor’s interests at the then-current fair market value, plus an amount that causes the private investor to reach its target return, if needed. If Ormat Nevada exercises this purchase option, it will become the sole owner of the project again.

Note 12 - Subsequent Events

9 Months Ended

Sep. 30, 2021

NOTE 12 — SUBSEQUENT EVENTS

Cash Dividend

On November 3, 2021, the Board of Directors of the Company declared, approved and authorized payment of a quarterly dividend of $6.7 million ($0.12 per share) to all holders of the Company’s issued and outstanding shares of common stock on November 17, 2021, payable on December 3, 2021.

Steamboat Hills Tax Equity Transaction

On October 25, 2021, one of the Company’s wholly-owned subsidiaries that indirectly owns the 28.4 MW Steamboat Hills Repower Geothermal power plant entered into a partnership agreement with a private investor. Under the transaction documents, the private investor acquired membership interests in the Steamboat Hills Repower Geothermal power plant project for an initial purchase price of approximately $38.9 million and for which it will pay additional installments that are expected to amount to approximately $5.3 million. The Company will continue to operate and maintain the power plant and will receive substantially all the distributable cash flow generated by the power plant, as described below.

Under the transaction documents, prior to December 31, 2029 (“Target Flip Date”), the Company’s wholly-owned subsidiary, Ormat Nevada Inc. ("Ormat Nevada"), receives substantially all of the distributable cash flow generated by the project, while the private investor receives substantially all of the tax attributes of the project. Following the later of the Target Flip Date and the date on which the private investor reaches its target return, Ormat Nevada will receive 97.5% of the distributable cash and 95.0% of the taxable income, on a go forward basis. In the event that the private investor will not reach its target return by the Target Flip Date, then for the period between the Target Flip Date and the date on which the private investor reaches its target return, the private investor will receive 100% of the distributable cash generated by the power plant and 99% of the tax attributes as long as the project is generating Production Tax Credits ("PTCs") (and 5% of the tax attributes afterwards).

On the Target Flip Date, Ormat Nevada has the option to purchase the private investor’s interests at the then-current fair market value, plus an amount that causes the private investor to reach its target return, if needed. If Ormat Nevada exercises this purchase option, it will become the sole owner of the project again.