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Note 6 - Loans and the Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Gross loans	$ 8,116,332	$ 8,351,841
Real Estate [Member]
Gross loans	40,405	59,576
Other Collateral Pledged [Member]
Gross loans	9,325	10,387
Collateral Pledged [Member]
Gross loans	49,730	69,963
Commercial Portfolio Segment [Member]
Gross loans	1,513,991	1,578,730
Commercial Portfolio Segment [Member] | Real Estate [Member]
Gross loans	2,369	4,949
Commercial Portfolio Segment [Member] | Other Collateral Pledged [Member]
Gross loans	9,325	10,387
Commercial Portfolio Segment [Member] | Collateral Pledged [Member]
Gross loans	11,694	15,336
Commercial Real Estate Portfolio Segment [Member]
Gross loans	5,735,170	5,895,545
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Gross loans	33,219	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	33,219	39,986
Commercial Construction Portfolio Segment [Member]
Gross loans	616,087	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	250,249	256,041
Residential Portfolio Segment [Member] | Real Estate [Member]
Gross loans	2,613	5,941
Residential Portfolio Segment [Member] | Other Collateral Pledged [Member]
Gross loans	0	0
Residential Portfolio Segment [Member] | Collateral Pledged [Member]
Gross loans	$ 2,613	$ 5,941

X

- 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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