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Note 14 - Financial Derivatives - Cash Flow Swap Hedges (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Net change in unrealized holding loss on cash flow hedge derivatives |  | $ 0 | $ (441) |
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |
Notional |  | 27,900 |  | $ 32,700
Periodic net settlement of swaps | [1] | 1,500 | 6,841 |
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |
Notional |  | $ 788,304 | $ 875,117 |
Weighted average fixed rate-pay |  | 3.88% | 3.55% |
Weighted average variable rate spread |  | 0.21% | 0.22% |
Weighted average variable rate-receive |  | 4.55% | 5.36% |
Net change in unrealized holding loss on cash flow hedge derivatives | [2] | $ (1,092) | $ 3,644 |
[1] | the amount of periodic net settlement of interest rate swaps was included in interest income.
[2] | the amount is included in other non-interest income.

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