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Note 7 - Derivatives and Hedging Activities (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2024
Dec. 31, 2024
Initial premium, paid upfront   $ 4,500
Interest rate caps | Cash Flow Hedges    
Initial premium paid upfront for the two caps   $ 3,500
Unhedged Derivatives | Swaptions    
Initial premium paid upfront for the two caps $ 4,500