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Note 11 - Derivative Instruments - Impact from Derivatives on Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Net Gain (Loss) Recognized | $ 1,906 | $ (664) | $ (1,880)
Interest Rate Swap [Member] |  |  |
Net Gain (Loss) Recognized | 1,906 | (664) | (1,880)
Metal Swaps [Member] |  |  |
Net Gain (Loss) Recognized | (1,903) | 633 | 418
Embedded Customer Derivatives [Member] |  |  |
Net Gain (Loss) Recognized | $ 1,903 | $ (633) | $ (418)

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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C + Details
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