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Note 15 - Financial Derivatives - Cash Flow Swap Hedges (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net gain/(loss) (1) |  | $ (774) | $ (1,763) | $ 5,813
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] |  |  |  |
Notional |  | $ 875,117 | $ 1,156,007 |
Weighted average fixed rate-pay |  | 3.55% | 2.01% |
Weighted average variable rate spread |  | 0.22% | 0.32% |
Weighted average variable rate-received |  | 5.36% | 5.41% |
Net gain/(loss) (1) | [1] | $ 3,644 | $ 7,935 |
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] |  |  |  |
Notional |  | 32,700 | 38,600 |
Periodic net settlement of swaps | [2] | $ 16,477 | $ 29,514 |
[1] | the amount is included in other non-interest income.
[2] | the amount of periodic net settlement of interest rate swaps was included in interest income.

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