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Note 10 - Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets |  |
Derivative Asset, Fair Value, Amount Not Offset Against Collateral | $ 0 | $ 210
Liabilities |  |
Derivative Liability, Fair Value, Amount Not Offset Against Collateral | $ (0) | 1,190
Fair Value, Recurring [Member] | Commodity Contract [Member] |  |
Assets |  |
Derivative Asset, Fair Value, Amount Not Offset Against Collateral |  | 210
Liabilities |  |
Derivative Liability, Fair Value, Amount Not Offset Against Collateral |  | 1,190
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Commodity Contract [Member] |  |
Assets |  |
Derivative Asset, Fair Value, Amount Not Offset Against Collateral |  | 210
Liabilities |  |
Derivative Liability, Fair Value, Amount Not Offset Against Collateral |  | $ 1,190

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