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Note 4 - Loans and Allowance for Loan Losses - Loans By Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total loans	$ 349,182	$ 334,781
FUSB [Member]
Total loans	251,489	239,869
FUSB [Member] | Pass [Member]
Total loans	242,354	231,785
FUSB [Member] | Special Mention [Member]
Total loans	7,190	4,755
FUSB [Member] | Substandard [Member]
Total loans	1,945	3,329
FUSB [Member] | Doubtful [Member]
Total loans
ALC [Member]
Total loans	97,693	94,912
ALC [Member] | Performing Financial Instruments [Member]
Total loans	96,069	93,013
ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	1,624	1,899
Consumer Portfolio Segment [Member] | FUSB [Member]
Total loans	5,431	6,206
Consumer Portfolio Segment [Member] | FUSB [Member] | Pass [Member]
Total loans	5,366	6,126
Consumer Portfolio Segment [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Consumer Portfolio Segment [Member] | FUSB [Member] | Substandard [Member]
Total loans	65	80
Consumer Portfolio Segment [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Commercial and Industrial Loans [Member]
Total loans	66,320	57,963
Commercial and Industrial Loans [Member] | FUSB [Member]
Total loans	66,320	57,963
Commercial and Industrial Loans [Member] | FUSB [Member] | Pass [Member]
Total loans	63,995	55,481
Commercial and Industrial Loans [Member] | FUSB [Member] | Special Mention [Member]
Total loans	2,105	2,227
Commercial and Industrial Loans [Member] | FUSB [Member] | Substandard [Member]
Total loans	220	255
Commercial and Industrial Loans [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Commercial and Industrial Loans [Member] | ALC [Member]
Total loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member]
Total loans	20,213	23,772
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member]
Total loans	20,213	23,772
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	19,939	22,240
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans	274	1,532
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | ALC [Member]
Total loans
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member]
Total loans	46,615	46,679
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Total loans	35,125	32,955
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	34,069	31,995
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans	201	213
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans	855	747
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member]
Total loans	11,490	13,724
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member] | Performing Financial Instruments [Member]
Total loans	11,292	13,507
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	198	217
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Total loans		13,724
Consumer Loans [Member] | Consumer Portfolio Segment [Member]
Total loans	41,081	42,619
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Total loans	5,431	6,206
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member]
Total loans	35,650	36,413
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Performing Financial Instruments [Member]
Total loans	34,609	35,278
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	1,041	1,135
Indirect Sales [Member] | Consumer Portfolio Segment [Member]
Total loans	50,553	44,775
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Total loans
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member]
Total loans	50,553	44,775
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Performing Financial Instruments [Member]
Total loans	50,168	44,228
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	385	547
Secured by Multi-family Residential Properties [Member] | Real Estate [Member]
Total loans	16,498	16,627
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Total loans	16,498	16,627
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	16,498	16,627
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | ALC [Member]
Total loans
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member]
Total loans	107,679	102,112
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Total loans	107,679	102,112
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	102,264	99,082
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans	4,884	2,315
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans	531	715
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | ALC [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member]
Total loans	223	234
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member]
Total loans	223	234
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	223	234
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member] | ALC [Member]
Total 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://www.xbrl.org/2003/role/presentationRef
-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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