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Note 4 - Loans and Allowance for Credit Losses - Schedule of Total Loans Outstanding by Portfolio Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 4,044,657	$ 3,992,534
Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,824,087	2,787,277
Consumer Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,205,257
Commercial Portfolio Segment [Member] | Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	675,892	666,727
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,013,869	1,996,243
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	352,749	294,677
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	333,307	363,123
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	887,643	967,025
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	440,170	371,418
Agricultural Real Estate Portfolio Segment [Member] | Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	134,326	124,307
Agricultural Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	66,395	61,299
Agricultural Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	67,931	63,008
Residential Portfolio Segment [Member] | Consumer Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,179,566	1,161,135
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	901,738	921,019
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	35,754	33,547
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	200,624	162,509
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	41,450	44,060
Consumer Portfolio Segment [Member] | Consumer Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,220,570	1,205,257
Consumer Portfolio Segment [Member] | Consumer Borrower [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 41,004	$ 44,122

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: 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

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