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Note 8 - Loans Receivable and Credit Disclosures - Allowance for Loan Losses Impairment Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Individually evaluated for impairment	$ 223	$ 209
Collectively evaluated for impairment	15,709	12,410
Balance	15,932	12,619
Construction Real Estate [Member]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	744	672
Balance	744	672
Family Residential Real Estate 1-4 [Member]
Individually evaluated for impairment	150	209
Collectively evaluated for impairment	2,436	1,913
Balance	2,586	2,122
Commercial Real Estate Portfolio Segment [Member]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	7,448	5,362
Balance	7,448	5,362
Agriculture Real Estate [Member]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,698	1,326
Balance	1,698	1,326
Commercial Portfolio Segment [Member]
Individually evaluated for impairment	2	0
Collectively evaluated for impairment	1,414	1,458
Balance	1,416	1,458
Agriculture [Member]
Individually evaluated for impairment	41	0
Collectively evaluated for impairment	1,727	1,478
Balance	1,768	1,478
Consumer and Other [Member]
Individually evaluated for impairment	30	0
Collectively evaluated for impairment	242	201
Balance	$ 272	$ 201

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

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
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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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-Section 50
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