Note 7 - Loans Receivable and Credit Disclosures - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2022
Impaired financing receivable, with no related allowance, average recorded investment	$ 3,167	$ 2,508
Impaired financing receivable, with no related allowance, interest income, accrual method	39	74
Impaired financing receivable, with related allowance, average recorded investment	9,920	10,152
Impaired financing receivable, with related allowance, interest income, accrual method	1	2
Impaired financing receivable, average recorded investment	13,087	12,660
Impaired financing receivable, interest income, accrual method	40	76
Construction Real Estate [Member]
Impaired financing receivable, with no related allowance, average recorded investment	0	0
Impaired financing receivable, with no related allowance, interest income, accrual method	0	0
Impaired financing receivable, with related allowance, average recorded investment	0	0
Impaired financing receivable, with related allowance, interest income, accrual method	0	0
Impaired financing receivable, average recorded investment	0	0
Impaired financing receivable, interest income, accrual method	0	0
Family Residential Real Estate 1-4 [Member]
Impaired financing receivable, with no related allowance, average recorded investment	781	722
Impaired financing receivable, with no related allowance, interest income, accrual method	39	55
Impaired financing receivable, with related allowance, average recorded investment	98	206
Impaired financing receivable, with related allowance, interest income, accrual method	0	1
Impaired financing receivable, average recorded investment	879	928
Impaired financing receivable, interest income, accrual method	39	56
Multifamily [Member]
Impaired financing receivable, with no related allowance, average recorded investment	0	0
Impaired financing receivable, with no related allowance, interest income, accrual method	0	0
Impaired financing receivable, with related allowance, average recorded investment	0	0
Impaired financing receivable, with related allowance, interest income, accrual method	0	0
Impaired financing receivable, average recorded investment	0	0
Impaired financing receivable, interest income, accrual method	0	0
Commercial Real Estate Portfolio Segment [Member]
Impaired financing receivable, with no related allowance, average recorded investment	1,929	1,026
Impaired financing receivable, with no related allowance, interest income, accrual method	0	0
Impaired financing receivable, with related allowance, average recorded investment	9,500	9,584
Impaired financing receivable, with related allowance, interest income, accrual method	0	0
Impaired financing receivable, average recorded investment	11,429	10,610
Impaired financing receivable, interest income, accrual method	0	0
Agriculture Real Estate [Member]
Impaired financing receivable, with no related allowance, average recorded investment	170	357
Impaired financing receivable, with no related allowance, interest income, accrual method	0	14
Impaired financing receivable, with related allowance, average recorded investment	0	0
Impaired financing receivable, with related allowance, interest income, accrual method	0	0
Impaired financing receivable, average recorded investment	170	357
Impaired financing receivable, interest income, accrual method	0	14
Commercial Portfolio Segment [Member]
Impaired financing receivable, with no related allowance, average recorded investment	242	234
Impaired financing receivable, with no related allowance, interest income, accrual method	0	5
Impaired financing receivable, with related allowance, average recorded investment	17	43
Impaired financing receivable, with related allowance, interest income, accrual method	1	1
Impaired financing receivable, average recorded investment	259	277
Impaired financing receivable, interest income, accrual method	1	6
Agriculture [Member]
Impaired financing receivable, with no related allowance, average recorded investment	39	164
Impaired financing receivable, with no related allowance, interest income, accrual method	0	0
Impaired financing receivable, with related allowance, average recorded investment	286	299
Impaired financing receivable, with related allowance, interest income, accrual method	0	0
Impaired financing receivable, average recorded investment	325	463
Impaired financing receivable, interest income, accrual method	0	0
Consumer and Other [Member]
Impaired financing receivable, with no related allowance, average recorded investment	6	5
Impaired financing receivable, with no related allowance, interest income, accrual method	0	0
Impaired financing receivable, with related allowance, average recorded investment	19	20
Impaired financing receivable, with related allowance, interest income, accrual method	0	0
Impaired financing receivable, average recorded investment	25	25
Impaired financing receivable, interest income, accrual method	$ 0	$ 0

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-15

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-17

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-15

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