Note 4 - Loans - Loan Classification (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,717,630	$ 1,721,812
Less allowance for credit losses	12,124	12,001	$ 10,557	$ 10,525
Loans, net	1,705,506	1,709,811
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	112,689	118,611
Less allowance for credit losses	1,307	1,573	967	1,039
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,108,360	1,112,132
Less allowance for credit losses	6,830	6,537	6,486	5,414
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	217,052	210,327
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	505,518	508,531
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	37,057	37,860
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	265,334	264,260
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	83,399	91,154
Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	464,184	457,099
Less allowance for credit losses	3,729	3,634	2,852	3,816
Residential Portfolio Segment [Member] \| Secured By Senior Liens On 1-4 Family Dwellings [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	397,209	392,513
Residential Portfolio Segment [Member] \| Secured By Junior Liens on 1-4 Family Dwellings [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	21,481	21,522
Residential Portfolio Segment [Member] \| Home Equity Line-of-credit loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	45,494	43,064
Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	19,054	20,498
Less allowance for credit losses	221	220	232	238
Agricultural Portfolio [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	13,210	13,293
Less allowance for credit losses	20	24	18	18
Other Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	133	179
Less allowance for credit losses	$ 17	$ 13	$ 2	$ 0

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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+ References

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+ 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
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-Publisher FASB
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