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Note 10 - Derivative Financial Instruments - Fair Value Hedges (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Interest Rate Swap [Member] |  |
Interest rate swaps, Fair value, assets | $ 581 | $ 909
Interest rate swaps, Fair value, liabilities | (175) | (161)
Customer interest rate swaps, fair value | 581 | 909
Customer interest rate swaps, fair value | 175 | 161
Customer Interest Rate Swaps [Member] |  |
Interest rate swaps, Fair value, assets | 234 | 87
Interest rate swaps, Fair value, liabilities | 234 | 87
Customer interest rate swaps, fair value | 234 | 87
Customer interest rate swaps, fair value | (234) | (87)
Other Assets [Member] | Interest Rate Swap [Member] |  |
Interest rate swaps | 8,221 | 8,531
Customer interest rate swaps | 8,221 | 8,531
Other Assets [Member] | Customer Interest Rate Swaps [Member] |  |
Interest rate swaps | 8,811 | 12,258
Customer interest rate swaps | $ 8,811 | $ 12,258
Customer interest rate swaps, receive rate | 6.19% | 6.48%
Customer interest rate swaps, pay rate | 5.98% | 5.81%
Other Liabilities [Member] | Interest Rate Swap [Member] |  |
Interest rate swaps | $ 25,000 | $ 25,000
Customer interest rate swaps | 25,000 | 25,000
Other Liabilities [Member] | Customer Interest Rate Swaps [Member] |  |
Interest rate swaps | 8,811 | 12,258
Customer interest rate swaps | $ 8,811 | $ 12,258
Customer interest rate swaps, receive rate | 5.98% | 5.81%
Customer interest rate swaps, pay rate | 6.19% | 6.48%

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