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Note 7 - Loans Receivable and Credit Disclosures - Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Impaired financing receivable with no related allowance, recorded investment	$ 5,079	$ 1,908
Impaired financing receivable with no related allowance, unpaid principal balance	5,235	2,680
Impaired financing receivable with related allowance, recorded investment	9,890	10,404
Impaired financing receivable with related allowance, unpaid principal balance	10,445	10,751
Impaired financing receivable, related allowance	1,005	1,392
Impaired financing receivable, recorded investment	14,969	12,312
Impaired financing receivable, unpaid principal balance	15,680	13,431
Construction Real Estate [Member]
Impaired financing receivable with no related allowance, recorded investment	0	0
Impaired financing receivable with no related allowance, unpaid principal balance	0	0
Impaired financing receivable with related allowance, recorded investment	0	0
Impaired financing receivable with related allowance, unpaid principal balance	0	0
Impaired financing receivable, related allowance	0	0
Impaired financing receivable, recorded investment	0	0
Impaired financing receivable, unpaid principal balance	0	0
Family Residential Real Estate 1-4 [Member]
Impaired financing receivable with no related allowance, recorded investment	839	677
Impaired financing receivable with no related allowance, unpaid principal balance	879	739
Impaired financing receivable with related allowance, recorded investment	196	303
Impaired financing receivable with related allowance, unpaid principal balance	187	314
Impaired financing receivable, related allowance	30	40
Impaired financing receivable, recorded investment	1,035	980
Impaired financing receivable, unpaid principal balance	1,066	1,053
Commercial Real Estate Portfolio Segment [Member]
Impaired financing receivable with no related allowance, recorded investment	3,739	124
Impaired financing receivable with no related allowance, unpaid principal balance	3,774	142
Impaired financing receivable with related allowance, recorded investment	9,405	9,668
Impaired financing receivable with related allowance, unpaid principal balance	9,944	10,001
Impaired financing receivable, related allowance	874	1,139
Impaired financing receivable, recorded investment	13,144	9,792
Impaired financing receivable, unpaid principal balance	13,718	10,143
Agriculture Real Estate [Member]
Impaired financing receivable with no related allowance, recorded investment	169	546
Impaired financing receivable with no related allowance, unpaid principal balance	194	1,001
Impaired financing receivable with related allowance, recorded investment	0	0
Impaired financing receivable with related allowance, unpaid principal balance	0	0
Impaired financing receivable, related allowance	0	0
Impaired financing receivable, recorded investment	169	546
Impaired financing receivable, unpaid principal balance	194	1,001
Commercial Portfolio Segment [Member]
Impaired financing receivable with no related allowance, recorded investment	276	233
Impaired financing receivable with no related allowance, unpaid principal balance	320	269
Impaired financing receivable with related allowance, recorded investment	0	97
Impaired financing receivable with related allowance, unpaid principal balance	0	98
Impaired financing receivable, related allowance	0	60
Impaired financing receivable, recorded investment	276	330
Impaired financing receivable, unpaid principal balance	320	367
Agriculture [Member]
Impaired financing receivable with no related allowance, recorded investment	48	322
Impaired financing receivable with no related allowance, unpaid principal balance	58	521
Impaired financing receivable with related allowance, recorded investment	271	315
Impaired financing receivable with related allowance, unpaid principal balance	294	315
Impaired financing receivable, related allowance	83	132
Impaired financing receivable, recorded investment	319	637
Impaired financing receivable, unpaid principal balance	352	836
Consumer and Other [Member]
Impaired financing receivable with no related allowance, recorded investment	8	6
Impaired financing receivable with no related allowance, unpaid principal balance	10	8
Impaired financing receivable with related allowance, recorded investment	18	21
Impaired financing receivable with related allowance, unpaid principal balance	20	23
Impaired financing receivable, related allowance	18	21
Impaired financing receivable, recorded investment	26	27
Impaired financing receivable, unpaid principal balance	$ 30	$ 31

X

- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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