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Note 5 - Loans and the Allowance for Credit Losses - Amortized Cost of of the Modified Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Modified | $ 83,317 | $ 17,798
Loans Modified, Gross | $ 7,663,100 | $ 7,474,275
Modified, percentage | 1.09% | 0.24%
Weighted Average Term Extension (Month) | 142 months | 216 months
Weighted Average Payment Reduction | $ 6 | $ 0
Weighted Average Interest Rate Reduction | 0.80% | 1.90%
Weighted Average [Member] |  |
Payment Deferral (Month) | 3 months | 6 months
Extended Maturity [Member] |  |
Modified | $ 19,054 | $ 243
Payment Deferral [Member] |  |
Modified | 126 | 10,283
Contractual Interest Rate Reduction [Member] |  |
Modified | 63,804 | 7,272
Principal Forgiveness [Member] |  |
Modified | 333 | 0
Commercial Portfolio Segment [Member] |  |
Modified | 18,100 | 10,317
Loans Modified, Gross | $ 1,532,730 | $ 1,578,730
Modified, percentage | 1.18% | 0.65%
Weighted Average Term Extension (Month) | 6 months | 36 months
Weighted Average Payment Reduction | $ 6 |
Commercial Portfolio Segment [Member] | Weighted Average [Member] |  |
Payment Deferral (Month) | 3 months | 6 months
Commercial Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modified | $ 17,641 | $ 34
Commercial Portfolio Segment [Member] | Payment Deferral [Member] |  |
Modified | 126 | 10,283
Commercial Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |
Modified | 0 | 0
Commercial Portfolio Segment [Member] | Principal Forgiveness [Member] |  |
Modified | 333 | 0
Commercial Real Estate Portfolio Segment [Member] |  |
Modified | 63,804 | 7,481
Loans Modified, Gross | $ 5,880,679 | $ 5,895,545
Modified, percentage | 1.08% | 0.13%
Weighted Average Term Extension (Month) |  | 180 months
Weighted Average Payment Reduction |  | $ 0
Weighted Average Interest Rate Reduction | 0.80% | 1.90%
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modified | $ 0 | $ 209
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member] |  |
Modified | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |
Modified | 63,804 | 7,272
Commercial Real Estate Portfolio Segment [Member] | Principal Forgiveness [Member] |  |
Modified | 0 | $ 0
Residential Portfolio Segment [Member] |  |
Modified | 1,413 |
Loans Modified, Gross | $ 249,691 |
Modified, percentage | 0.57% |
Weighted Average Term Extension (Month) | 136 months |
Weighted Average Payment Reduction | $ 0 |
Residential Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modified | 1,413 |
Residential Portfolio Segment [Member] | Payment Deferral [Member] |  |
Modified | 0 |
Residential Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |
Modified | 0 |
Residential Portfolio Segment [Member] | Principal Forgiveness [Member] |  |
Modified | $ 0 |

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