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Note 5 - Financing Arrangements - Effects or Derivative Instruments on Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]      
Interest expense $ 1,791 $ 1,630 $ 0