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Note 5 - Derivatives - Schedule of Hedging Relationship (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Total amounts presented on the Consolidated Statements of Income | $ 17,283 | $ 15,799 | $ 49,679 | $ 45,872
Interest and dividends on investment securities, cash and cash equivalents, and certificates of deposit at other financial institutions | 4,309 | 3,243 | 11,459 | 10,660
Reclassification adjustment for realized gain, net included in net income | (807) | (1,584) | (2,634) | (5,293)
Interest Expense [Member] |  |  |  |
Net interest income recognized on cash flows of derivatives designated as hedging instruments | 0 | 0 | 0 | 0
Interest Income [Member] |  |  |  |
Net interest income recognized on cash flows of derivatives designated as hedging instruments | 280 | 433 | 822 | 1,272
Designated as Hedging Instrument [Member] | Securities Investment [Member] | Interest Rate Swap [Member] | Interest Expense [Member] |  |  |  |
Net gains (losses) on fair value hedging relationships: Interest rate swaps – securities, Recognized on hedged items | 0 | 0 | 0 | 0
Recognized on derivatives designated as hedging instruments | 0 | 0 | 0 | 0
Net income recognized on fair value hedges | 0 | 0 | 0 | 0
Designated as Hedging Instrument [Member] | Securities Investment [Member] | Interest Rate Swap [Member] | Interest Income [Member] |  |  |  |
Net gains (losses) on fair value hedging relationships: Interest rate swaps – securities, Recognized on hedged items | 241 | 2,432 | 2,181 | 1,044
Recognized on derivatives designated as hedging instruments | (241) | (2,432) | (2,181) | (1,044)
Net income recognized on fair value hedges | 280 | 433 | 822 | 1,272
Designated as Hedging Instrument [Member] | Brokered Deposits and Borrowings [Member] | Interest Rate Swap [Member] | Interest Expense [Member] |  |  |  |
Reclassification adjustment for realized gain, net included in net income | 527 | 1,151 | 1,812 | 4,021
Net income recognized on cash flow hedges | 527 | 1,151 | 1,812 | 4,021
Designated as Hedging Instrument [Member] | Brokered Deposits and Borrowings [Member] | Interest Rate Swap [Member] | Interest Income [Member] |  |  |  |
Reclassification adjustment for realized gain, net included in net income | 0 | 0 | 0 | 0
Net income recognized on cash flow hedges | 0 | 0 | 0 | 0
Designated as Hedging Instrument [Member] | Fair Value Hedging And Cash Flow Hedging [Member] |  |  |  |
Total amounts presented on the Consolidated Statements of Income | 16,797 | 15,314 | 48,223 | 44,416
Interest and dividends on investment securities, cash and cash equivalents, and certificates of deposit at other financial institutions | $ 4,309 | $ 3,243 | $ 11,459 | $ 10,660

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