Note 4 - Loans - Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Loans	$ 1,109,856		$ 1,106,535
Deferred loan fees and costs, net	(1,877)		(1,561)
Allowance for credit losses	(11,430)	$ (11,448)	(11,460)	$ (11,121)	$ (10,922)	$ (10,896)
Net loans	1,096,549		1,093,514
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land [Member]
Loans	31,090		17,812
Allowance for credit losses	(633)	(387)	(258)	(909)	(1,059)	(1,227)
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member]
Loans	86,933		87,768
Allowance for credit losses	(699)	(731)	(737)	(666)	(634)	(667)
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Loans	222,252		229,961
Allowance for credit losses	(1,396)	(1,507)	(1,503)	(1,856)	(1,809)	(1,805)
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [member]
Loans	524,978		528,769
Allowance for credit losses	(6,245)	(6,332)	(6,401)	(4,764)	(4,620)	(4,805)
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loans [Member]
Loans	92,227		95,348
Allowance for credit losses	(1,546)	(1,614)	(1,665)	(1,409)	(1,462)	(1,468)
Commercial Portfolio Segment [Member]
Loans	79,422		83,572
Allowance for credit losses	(599)	(608)	(645)	(1,177)	(1,022)	(650)
Consumer Portfolio Segment [Member]
Loans	33,079		33,969
Allowance for credit losses	(172)	(169)	(175)	(239)	(235)	(227)
Agriculture [Member]
Loans	39,875		29,336
Allowance for credit losses	$ (140)	$ (100)	$ (76)	$ (101)	$ (81)	$ (47)

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

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

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481598/310-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-SubTopic 20
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481569/310-20-50-3

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