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Note 4 - Loans and Allowance for Loan Losses - Schedule of Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Total loans	$ 328,767	$ 334,781
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total loans	25,853	23,772
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total loans	45,528	46,679
Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Total loans	16,464	16,627
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total loans	97,294	102,112
Real Estate [Member] | Other Real Estate Loans [Member]
Total loans	230	234
Commercial and Industrial Loans [Member]
Total loans	57,253	57,963
Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total loans	38,949	42,619
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total loans	47,196	44,775
FUSB [Member]
Total past due	582	1,268
Current	235,104	238,601
Total loans	235,686	239,869
Accruing loans past due 90 days or more amounted
FUSB [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	292	245
FUSB [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	258	926
FUSB [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	32	97
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total past due	86	86
Current	25,767	23,686
Total loans	25,853	23,772
Accruing loans past due 90 days or more amounted
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	388	378
Current	32,147	32,577
Total loans	32,535	32,955
Accruing loans past due 90 days or more amounted
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	191	145
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	197	164
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
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Current	16,464	16,627
Total loans	16,464	16,627
Accruing loans past due 90 days or more amounted
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total past due		762
Current	97,294	101,350
Total loans	97,294	102,112
Accruing loans past due 90 days or more amounted
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
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Current	230	234
Total loans	230	234
Accruing loans past due 90 days or more amounted
FUSB [Member] | Commercial and Industrial Loans [Member]
Total past due	21	14
Current	57,232	57,949
Total loans	57,253	57,963
Accruing loans past due 90 days or more amounted
FUSB [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	15	14
FUSB [Member] | Commercial and Industrial Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	6
FUSB [Member] | Consumer Portfolio Segment [Member]
Total past due	87	28
Current	5,970	6,178
Total loans	6,057	6,206
Accruing loans past due 90 days or more amounted
FUSB [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	61
FUSB [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	26	28
FUSB [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total loans	6,057	6,206
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total loans
ALC [Member]
Total past due	2,690	3,080
Current	90,391	91,832
Total loans	93,081	94,912
Accruing loans past due 90 days or more amounted
ALC [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	1,590	1,806
ALC [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	617	693
ALC [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	483	581
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total past due	290	303
Current	12,703	13,421
Total loans	12,993	13,724
Accruing loans past due 90 days or more amounted
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	242	213
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	47	61
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	1	29
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Commercial and Industrial Loans [Member]
Current
Total loans
Accruing loans past due 90 days or more amounted
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total past due	1,659	1,958
Current	31,233	34,455
Total loans	32,892	36,413
Accruing loans past due 90 days or more amounted
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	889	1,104
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	434	441
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	336	413
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total past due	741	819
Current	46,455	43,956
Total loans	47,196	44,775
Accruing loans past due 90 days or more amounted
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total past due	459	489
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total past due	136	191
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total past due	$ 146	$ 139

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
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

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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 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&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 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&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=82891408&loc=d3e4428-111522

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