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Note 7 - Loans Receivable and Credit Disclosures - Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Impaired financing receivable with no related allowance, recorded investment	$ 1,251	$ 1,908
Impaired financing receivable with no related allowance, unpaid principal balance	1,423	2,680
Impaired financing receivable with related allowance, recorded investment	9,948	10,404
Impaired financing receivable with related allowance, unpaid principal balance	10,372	10,751
Impaired financing receivable, related allowance	1,186	1,392
Impaired financing receivable, recorded investment	11,199	12,312
Impaired financing receivable, unpaid principal balance	11,795	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	722	677
Impaired financing receivable with no related allowance, unpaid principal balance	799	739
Impaired financing receivable with related allowance, recorded investment	0	303
Impaired financing receivable with related allowance, unpaid principal balance	0	314
Impaired financing receivable, related allowance	0	40
Impaired financing receivable, recorded investment	722	980
Impaired financing receivable, unpaid principal balance	799	1,053
Commercial Real Estate Portfolio Segment [Member]
Impaired financing receivable with no related allowance, recorded investment	118	124
Impaired financing receivable with no related allowance, unpaid principal balance	139	142
Impaired financing receivable with related allowance, recorded investment	9,595	9,668
Impaired financing receivable with related allowance, unpaid principal balance	10,001	10,001
Impaired financing receivable, related allowance	1,065	1,139
Impaired financing receivable, recorded investment	9,713	9,792
Impaired financing receivable, unpaid principal balance	10,140	10,143
Agriculture Real Estate [Member]
Impaired financing receivable with no related allowance, recorded investment	171	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	171	546
Impaired financing receivable, unpaid principal balance	194	1,001
Commercial Portfolio Segment [Member]
Impaired financing receivable with no related allowance, recorded investment	207	233
Impaired financing receivable with no related allowance, unpaid principal balance	248	269
Impaired financing receivable with related allowance, recorded investment	34	97
Impaired financing receivable with related allowance, unpaid principal balance	35	98
Impaired financing receivable, related allowance	2	60
Impaired financing receivable, recorded investment	241	330
Impaired financing receivable, unpaid principal balance	283	367
Agriculture [Member]
Impaired financing receivable with no related allowance, recorded investment	30	322
Impaired financing receivable with no related allowance, unpaid principal balance	38	521
Impaired financing receivable with related allowance, recorded investment	300	315
Impaired financing receivable with related allowance, unpaid principal balance	315	315
Impaired financing receivable, related allowance	100	132
Impaired financing receivable, recorded investment	330	637
Impaired financing receivable, unpaid principal balance	353	836
Consumer and Other [Member]
Impaired financing receivable with no related allowance, recorded investment	3	6
Impaired financing receivable with no related allowance, unpaid principal balance	5	8
Impaired financing receivable with related allowance, recorded investment	19	21
Impaired financing receivable with related allowance, unpaid principal balance	21	23
Impaired financing receivable, related allowance	19	21
Impaired financing receivable, recorded investment	22	27
Impaired financing receivable, unpaid principal balance	$ 26	$ 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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- Definition

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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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