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Note 5 - Loans and Allowance for Loan Losses - Loans By Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Loans	$ 531,198	$ 357,458
FUSB [Member]
Loans	419,756	257,503
FUSB [Member] | Pass [Member]
Loans	409,190	248,610
FUSB [Member] | Special Mention [Member]
Loans	4,960	7,255
FUSB [Member] | Substandard [Member]
Loans	5,606	1,638
FUSB [Member] | Doubtful [Member]
Loans
ALC [Member]
Loans	111,442	99,955
ALC [Member] | Performing Financial Instruments [Member]
Loans	110,241	98,039
ALC [Member] | Nonperforming Financial Instruments [Member]
Loans	1,201	1,916
Consumer Portfolio Segment [Member] | FUSB [Member]
Loans	7,075	5,217
Consumer Portfolio Segment [Member] | FUSB [Member] | Pass [Member]
Loans	6,990	5,155
Consumer Portfolio Segment [Member] | FUSB [Member] | Special Mention [Member]
Loans
Consumer Portfolio Segment [Member] | FUSB [Member] | Substandard [Member]
Loans	85	62
Consumer Portfolio Segment [Member] | FUSB [Member] | Doubtful [Member]
Loans
Commercial and Industrial Loans [Member]
Loans	83,087	69,969
Commercial and Industrial Loans [Member] | FUSB [Member]
Loans	83,087	69,969
Commercial and Industrial Loans [Member] | FUSB [Member] | Pass [Member]
Loans	80,853	67,689
Commercial and Industrial Loans [Member] | FUSB [Member] | Special Mention [Member]
Loans	2,077	2,066
Commercial and Industrial Loans [Member] | FUSB [Member] | Substandard [Member]
Loans	157	214
Commercial and Industrial Loans [Member] | FUSB [Member] | Doubtful [Member]
Loans
Commercial and Industrial Loans [Member] | ALC [Member]
Loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member]
Loans	43,501	26,143
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member]
Loans	43,501	26,143
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Loans	42,761	25,872
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Loans	511	84
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Loans	229	187
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | ALC [Member]
Loans
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member]
Loans	120,027	45,073
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Loans	111,555	34,272
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Loans	107,276	33,278
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Loans	266	339
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Loans	4,013	655
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Loans
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member]
Loans	8,472	10,801
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member] | Performing Financial Instruments [Member]
Loans	8,379	10,495
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Loans	93	306
Consumer Loans [Member] | Consumer Portfolio Segment [Member]
Loans	39,040	39,300
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Loans	7,075	5,217
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member]
Loans	31,965	34,083
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Performing Financial Instruments [Member]
Loans	31,149	32,933
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Loans	816	1,150
Secured by Multi-family Residential Properties [Member] | Real Estate [Member]
Loans	22,915	16,579
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Loans	22,915	16,579
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Loans	22,915	16,579
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | ALC [Member]
Loans
Indirect Sales [Member] | Consumer Portfolio Segment [Member]
Loans	71,005	55,071
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Loans
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member]
Loans	71,005	55,071
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Performing Financial Instruments [Member]
Loans	70,713	54,611
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Loans	292	460
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member]
Loans	150,523	105,133
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Loans	150,523	105,133
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Loans	147,302	99,847
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Loans	2,099	4,766
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Loans	1,122	520
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Loans
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | ALC [Member]
Loans
Other Real Estate Loans [Member] | Real Estate [Member]
Loans	1,100	190
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member]
Loans	1,100	190
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Loans	1,093	190
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Loans	7
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Loans
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Loans
Other Real Estate Loans [Member] | Real Estate [Member] | ALC [Member]
Loans

X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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