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Note 4 - Loans and Allowance for Loan Losses - Schedule of Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Total loans	$ 334,781	$ 268,577
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total loans	23,772	11,827
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total loans	46,679	47,963
Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Total loans	16,627	11,845
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total loans	102,112	83,883
Real Estate [Member] | Other Real Estate Loans [Member]
Total loans	234	115
Commercial and Industrial Loans [Member]
Total loans	57,963	29,377
Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total loans	42,619	45,634
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total loans	44,775	37,933
FUSB [Member]
Total past due	1,268	1,658
Current	238,601	173,555
Total loans	239,869	175,213
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	926	719
FUSB [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	97	262
FUSB [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	245	677
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total past due	86	86
Current	23,686	11,741
Total loans	23,772	11,827
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	86	86
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total past due	378	684
Current	32,577	30,046
Total loans	32,955	30,730
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	164	118
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	69	206
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	145	360
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Total past due		0
Current	16,627	11,845
Total loans	16,627	11,845
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total past due	762	678
Current	101,350	83,205
Total loans	102,112	83,883
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	762	530
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		148
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Total past due		0
Current	234	115
Total loans	234	115
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
FUSB [Member] | Commercial and Industrial Loans [Member]
Total past due	14	74
Current	57,949	29,303
Total loans	57,963	29,377
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		22
FUSB [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		52
FUSB [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	14	0
FUSB [Member] | Consumer Portfolio Segment [Member]
Total past due	28	136
Current	6,178	7,300
Total loans	6,206	7,436
Accruing loans past due 90 days or more amounted		0
FUSB [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		49
FUSB [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	28	4
FUSB [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		83
FUSB [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total loans	6,206	7,436
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total loans
ALC [Member]
Total past due	3,080	3,458
Current	91,832	89,906
Total loans	94,912	93,364
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	693	1,056
ALC [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	581	773
ALC [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	1,806	1,629
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total past due		0
Current		0
Total loans
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total past due	303	549
Current	13,421	16,684
Total loans	13,724	17,233
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	61	91
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	29	206
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	213	252
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Total past due		0
Current		0
Total loans
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total past due		0
Current		0
Total loans
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Total past due		0
Current		0
Total loans
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
ALC [Member] | Commercial and Industrial Loans [Member]
Total past due		0
Current		0
Total loans
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due		0
ALC [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due		0
ALC [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due		0
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total past due	1,958	2,019
Current	34,455	36,179
Total loans	36,413	38,198
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	441	590
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	413	438
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	1,104	991
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total past due	819	890
Current	43,956	37,043
Total loans	44,775	37,933
Accruing loans past due 90 days or more amounted		0
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	191	375
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	139	129
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	$ 489	$ 386

X

- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524

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- Definition

Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524

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+ 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=65884687&loc=d3e4428-111522

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