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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Loans, collectively evaluated for impairment		$ 716,526	$ 703,577
Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment		42,972	37,845
Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment		177,716	174,004
Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment		356,601	349,206
Commercial Non Real Estate Segment [Member]
Loans, collectively evaluated for impairment		44,928	45,520
Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment		34,578	36,225
Pass [Member]
Loans, collectively evaluated for impairment	[1]	715,617	701,387
Pass [Member] | States Political Subdivisions [Member]
Loans, collectively evaluated for impairment	[1]	59,731	60,777
Special Mention [Member]
Loans, collectively evaluated for impairment	[1]	62	1,455
Special Mention [Member] | States Political Subdivisions [Member]
Loans, collectively evaluated for impairment	[1]	0	0
Classified Excluding Impaired [Member]
Loans, collectively evaluated for impairment	[1]	847	735
Classified Excluding Impaired [Member] | States Political Subdivisions [Member]
Loans, collectively evaluated for impairment	[1]	0	0
Construction, 1-4 Family Residential [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment	[1]	7,408	9,264
Construction, 1-4 Family Residential [Member] | Special Mention [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment	[1]	0
Construction, 1-4 Family Residential [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment	[1]	0	0
Construction, Other [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment	[1]	35,564	28,560
Construction, Other [Member] | Special Mention [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment	[1]		21
Construction, Other [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, collectively evaluated for impairment	[1]	0	0
Equity Lines [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	15,984	16,026
Equity Lines [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		38
Equity Lines [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		0
Closed End First Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	93,553	92,253
Closed End First Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		994
Closed End First Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	587	582
Closed End Junior Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	3,976	3,954
Closed End Junior Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]
Closed End Junior Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]
Investor Owned Residential Real Estate [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	63,593	60,157
Investor Owned Residential Real Estate [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]
Investor Owned Residential Real Estate [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	23
Multifamily Real Estate [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	97,522	98,582
Multifamily Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]
Multifamily Real Estate [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		0
Commercial Real Estate, Owner Occupied [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	127,008	123,225
Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		211
Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	30	32
Commercial Real Estate Other [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	132,041	127,156
Commercial Real Estate Other [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]
Commercial Real Estate Other [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]
Commercial and Industrial [Member] | Pass [Member] | Commercial Non Real Estate Segment [Member]
Loans, collectively evaluated for impairment	[1]	44,719	45,420
Commercial and Industrial [Member] | Special Mention [Member] | Commercial Non Real Estate Segment [Member]
Loans, collectively evaluated for impairment	[1]	62	54
Commercial and Industrial [Member] | Classified Excluding Impaired [Member] | Commercial Non Real Estate Segment [Member]
Loans, collectively evaluated for impairment	[1]	147	46
Credit Card Receivable [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	5,479	5,724
Credit Card Receivable [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	0	0
Credit Card Receivable [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	0	0
Automobile Loan [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	15,648	18,598
Automobile Loan [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		133
Automobile Loan [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	46	71
Other Consumer Loans [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	13,391	11,691
Other Consumer Loans [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]		4
Other Consumer Loans [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, collectively evaluated for impairment	[1]	$ 14	$ 4
[1] Excludes impaired, if any.

X

- Definition

The balance of financing receivables 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 (h)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

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