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Note 5 - Loans and the Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Gross loans | $ 8,280,482 | $ 8,351,841
Real Estate [Member] |  |
Gross loans | 43,054 | 59,576
Other Collateral Pledged [Member] |  |
Gross loans | 9,222 | 10,387
Collateral Pledged [Member] |  |
Gross loans | 52,276 | 69,963
Commercial Portfolio Segment [Member] |  |
Gross loans | 1,532,730 | 1,578,730
Commercial Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 2,308 | 4,949
Commercial Portfolio Segment [Member] | Other Collateral Pledged [Member] |  |
Gross loans | 9,222 | 10,387
Commercial Portfolio Segment [Member] | Collateral Pledged [Member] |  |
Gross loans | 11,530 | 15,336
Commercial Real Estate Portfolio Segment [Member] |  |
Gross loans | 5,880,679 | 5,895,545
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 36,486 | 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 | 36,486 | 39,986
Commercial Construction Portfolio Segment [Member] |  |
Gross loans | 616,246 | 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 | 249,691 | 256,041
Residential Portfolio Segment [Member] | Real Estate [Member] |  |
Gross loans | 2,056 | 5,941
Residential Portfolio Segment [Member] | Other Collateral Pledged [Member] |  |
Gross loans | 0 | 0
Residential Portfolio Segment [Member] | Collateral Pledged [Member] |  |
Gross loans | $ 2,056 | $ 5,941

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- Definition Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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