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Note 7 - Loans Receivable and Credit Disclosures - Allowance for Loan Losses Impairment Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Individually evaluated for impairment	$ 1,656	$ 1,819
Collectively evaluated for impairment	15,251	15,396
Balance	16,907	17,215
Construction Real Estate [Member]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	868	725
Balance	868	725
Family Residential Real Estate 1-4 [Member]
Individually evaluated for impairment	17	150
Collectively evaluated for impairment	2,366	2,431
Balance	2,383	2,581
Commercial Real Estate Portfolio Segment [Member]
Individually evaluated for impairment	1,486	1,486
Collectively evaluated for impairment	7,563	7,444
Balance	9,049	8,930
Agriculture Real Estate [Member]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,498	1,595
Balance	1,498	1,595
Commercial Portfolio Segment [Member]
Individually evaluated for impairment	0	115
Collectively evaluated for impairment	1,262	1,338
Balance	1,262	1,453
Agriculture [Member]
Individually evaluated for impairment	120	40
Collectively evaluated for impairment	1,494	1,656
Balance	1,614	1,696
Consumer and Other [Member]
Individually evaluated for impairment	33	28
Collectively evaluated for impairment	200	207
Balance	$ 233	$ 235

X

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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-Topic 310
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