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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	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Allowance for loan losses, individually evaluated for impairment	$ 120	$ 139
Allowance for loan losses, collectively evaluated for impairment	7,142	7,251
Allowance for loan losses	7,262	7,390	$ 7,713	$ 7,925
Loans, individually evaluated for impairment	6,233	6,820
Loans, collectively evaluated for impairment	716,526	703,577
Loans	722,759	710,397
Real Estate Construction Portfolio Segment[Member]
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, collectively evaluated for impairment	454	398
Allowance for loan losses	454	398	474	337
Loans, individually evaluated for impairment
Loans, collectively evaluated for impairment	42,972	37,845
Loans	42,972	37,845
Consumer Real Estate Portfolio Segment [Member]
Allowance for loan losses, individually evaluated for impairment	3	4
Allowance for loan losses, collectively evaluated for impairment	2,098	2,045
Allowance for loan losses	2,101	2,049	2,178	2,027
Loans, individually evaluated for impairment	1,398	1,452
Loans, collectively evaluated for impairment	177,716	174,004
Loans	179,114	175,456
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses, individually evaluated for impairment
Allowance for loan losses, collectively evaluated for impairment	2,699	2,798
Allowance for loan losses	2,699	2,798	3,039	3,044
Loans, individually evaluated for impairment	3,892	4,340
Loans, collectively evaluated for impairment	356,601	349,206
Loans	360,493	353,546
Commercial Non Real Estate Segment [Member]
Allowance for loan losses, individually evaluated for impairment	117	135
Allowance for loan losses, collectively evaluated for impairment	410	467
Allowance for loan losses	527	602	682	1,072
Loans, individually evaluated for impairment	938	1,015
Loans, collectively evaluated for impairment	44,928	45,520
Loans	45,866	46,535
Public Sector and IDA Portfolio Segment[Member]
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, collectively evaluated for impairment	490	583
Allowance for loan losses	490	583	570	419
Loans, individually evaluated for impairment	0	0
Loans, collectively evaluated for impairment	59,731	60,777
Loans	59,731	60,777
Consumer Non Real Estate Portfolio Segment [Member]
Allowance for loan losses, individually evaluated for impairment
Allowance for loan losses, collectively evaluated for impairment	688	750
Allowance for loan losses	688	750	724	707
Loans, individually evaluated for impairment	5	13
Loans, collectively evaluated for impairment	34,578	36,225
Loans	34,583	36,238
Unallocated Financing Receivables [Member]
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, collectively evaluated for impairment	303	210
Allowance for loan losses	303	210	$ 46	$ 319
Loans, individually evaluated for impairment	0	0
Loans, collectively evaluated for impairment		0
Loans		$ 0

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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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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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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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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