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Note 6 - Derivative Instruments and Hedging Activities (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
May 31, 2020
Interest Rate Swap [Member]        
Derivative, Notional Amount       $ 70.0
Forward Contracts [Member]        
Derivative, Notional Amount $ 29.4 $ 61.4 $ 49.7  
Forward Contracts [Member] | Designated as Hedging Instrument [Member]        
Derivative, Notional Amount $ 29.4 $ 61.4 $ 49.7  
Forward Contracts [Member] | Minimum [Member]        
Derivative, Term of Contract (Month) 1 month      
Forward Contracts [Member] | Maximum [Member]        
Derivative, Term of Contract (Month) 12 months