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Note 5 - Loans and the Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Gross loans | $ 8,162,500 | $ 8,351,841
Real Estate [Member] |  |
Gross loans | 34,279 | 59,576
Other Collateral Pledged [Member] |  |
Gross loans | 10,174 | 10,387
Collateral Pledged [Member] |  |
Gross loans | 44,453 | 69,963
Commercial Portfolio Segment [Member] |  |
Gross loans | 1,501,732 | 1,578,730
Commercial Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 1,677 | 4,949
Commercial Portfolio Segment [Member] | Other Collateral Pledged [Member] |  |
Gross loans | 10,174 | 10,387
Commercial Portfolio Segment [Member] | Collateral Pledged [Member] |  |
Gross loans | 11,851 | 15,336
Commercial Real Estate Portfolio Segment [Member] |  |
Gross loans | 5,763,869 | 5,895,545
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 29,585 | 39,986
Commercial Real Estate Portfolio Segment [Member] | Other Collateral Pledged [Member] |  |
Gross loans | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member] |  |
Gross loans | 29,585 | 39,986
Commercial Construction Portfolio Segment [Member] |  |
Gross loans | 639,168 | 620,496
Commercial Construction Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 2,204 | 8,700
Commercial Construction Portfolio Segment [Member] | Other Collateral Pledged [Member] |  |
Gross loans | 0 | 0
Commercial Construction Portfolio Segment [Member] | Collateral Pledged [Member] |  |
Gross loans | 2,204 | 8,700
Residential Portfolio Segment [Member] |  |
Gross loans | 256,786 | 256,041
Residential Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 813 | 5,941
Residential Portfolio Segment [Member] | Other Collateral Pledged [Member] |  |
Gross loans | 0 | 0
Residential Portfolio Segment [Member] | Collateral Pledged [Member] |  |
Gross loans | $ 813 | $ 5,941

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