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Note 5 - Financing Arrangements - Summary of Gain (Loss) Recognized on Derivatives (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Interest Expense [Member]      
Amount of (loss) gain on derivatives $ 1,630 $ (43) $ 0