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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Allowance for loan losses, Individually evaluated for impairment	$ 18	$ 75
Allowance for loan losses, Collectively evaluated for impairment	8,518	8,406
Allowance for loan losses	8,536	8,481	$ 7,240	$ 6,863
Loans, Individually evaluated for impairment	4,939	4,903
Non-impaired gross loans	776,305	765,124
Loans	781,244	770,027
Consumer Real Estate Portfolio Segment [Member]
Allowance for loan losses, Individually evaluated for impairment	2	2
Allowance for loan losses, Collectively evaluated for impairment	2,364	2,163
Allowance for loan losses	2,366	2,165	2,070	1,895
Loans, Individually evaluated for impairment	193	194
Non-impaired gross loans	186,713	181,588
Loans	186,906	181,782
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses, Individually evaluated for impairment		0
Allowance for loan losses, Collectively evaluated for impairment	3,862	3,853
Allowance for loan losses	3,862	3,853	2,600	2,559
Loans, Individually evaluated for impairment		3,856
Non-impaired gross loans	388,542	389,259
Loans	392,461	393,115
Commercial Non Real Estate Segment [Member]
Allowance for loan losses, Individually evaluated for impairment	16	73
Allowance for loan losses, Collectively evaluated for impairment	618	597
Allowance for loan losses	634	670	721	555
Loans, Individually evaluated for impairment	826	851
Non-impaired gross loans	86,432	77,920
Loans	87,258	78,771
Consumer Non Real Estate Portfolio Segment [Member]
Allowance for loan losses, Individually evaluated for impairment		0
Allowance for loan losses, Collectively evaluated for impairment	496	555
Allowance for loan losses	496	555	619	650
Loans, Individually evaluated for impairment	1	2
Non-impaired gross loans	32,260	33,108
Loans	32,261	33,110
Real Estate Construction Portfolio Segment[Member]
Allowance for loan losses, Collectively evaluated for impairment	511	503
Allowance for loan losses	511	503	375	400
Non-impaired gross loans	42,570	42,266
Loans	42,570	42,266
Public Sector and IDA Portfolio Segment[Member]
Allowance for loan losses, Collectively evaluated for impairment	311	339
Allowance for loan losses	311	339	511	478
Non-impaired gross loans	39,788	40,983
Loans	39,788	40,983
Unallocated Financing Receivables [Member]
Allowance for loan losses, Collectively evaluated for impairment	356	396
Allowance for loan losses	356	396	$ 344	$ 326
Non-impaired gross loans	0	$ 0
Loans	$ 0

X

- 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
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524

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

+ References

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-SubTopic 10
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-Publisher FASB
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-Topic 310
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-Publisher FASB
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-Topic 310
-SubTopic 10
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-Paragraph 11B
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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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-SubTopic 10
-Section 50
-Paragraph 11B
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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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