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Note 4 - Derivative Instruments and Hedging Activities (Details Textual) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2024
Dec. 31, 2023
May 31, 2020
Interest Rate Swap [Member]      
Derivative, Notional Amount     $ 70.0
Forward Contracts [Member]      
Derivative, Notional Amount $ 43.2 $ 61.4  
Forward Contracts [Member] | Designated as Hedging Instrument [Member]      
Derivative, Notional Amount $ 43.2 $ 61.4  
Forward Contracts [Member] | Minimum [Member]      
Derivative, Term of Contract (Month) 1 month    
Forward Contracts [Member] | Maximum [Member]      
Derivative, Term of Contract (Month) 12 months