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Note 4 - Loans - Nonaccrual Loans (Details) - Collateral Pledged [Member] - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
With no related allowance recorded, carrying value	$ 3,240	$ 123
Related allowance	1,273	0
Commercial and Industrial Portfolio Segment [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
With no related allowance recorded, carrying value	52	72
Related allowance	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
With no related allowance recorded, carrying value	2,642	0
Related allowance	1,180	0
Commercial Real Estate Portfolio Segment [Member] | Farmland [Member]
With no related allowance recorded, carrying value	52	51
Related allowance	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loans [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction Loans Secured by 1-4 Family Dwellings [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction Loans Secured By Other Real Estate [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0
Residential Portfolio Segment [Member] | Secured By Junior Liens on 1-4 Family Dwellings [Member]
With no related allowance recorded, carrying value	421	0
Related allowance	52	0
Residential Portfolio Segment [Member] | Secured By Senior Liens On 1-4 Family Dwellings [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0	0
Residential Portfolio Segment [Member] | Home Equity Line-of-credit loans [Member]
With no related allowance recorded, carrying value	73	0
Related allowance	41	0
Consumer Portfolio Segment [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0	0
Agricultural Portfolio [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	0	0
Other Loans [Member]
With no related allowance recorded, carrying value	0	0
Related allowance	$ 0	$ 0

X

- Definition

Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 30
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479391/326-20-30-2

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11C

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