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Loans and Allowance for Loan Losses - Schedule of Carrying Amount of Loans by Credit Quality Indicator (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Ending balance	$ 251,800	$ 274,317
FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	159,040	191,175
FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	145,880	160,421
FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	4,426	15,385
FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	8,734	15,369
ALC [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	92,760	83,142
ALC [Member] | Performing Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	91,162	81,237
ALC [Member] | Nonperforming Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,598	1,905
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	11,900	10,431
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	11,900	10,431
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	9,932	5,326
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance		2,515
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,968	2,590
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	50,042	52,104
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	32,049	30,795
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	30,654	27,956
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	232	638
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,163	2,201
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	17,993	21,309
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Performing Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	17,654	20,778
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member] | Nonperforming Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	339	531
Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	13,005	20,403
Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	13,005	20,403
Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	11,294	18,033
Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,711	2,370
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	75,840	104,883
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	75,840	104,883
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	69,458	86,812
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	3,370	10,905
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	3,012	7,166
Real Estate [Member] | Other Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	116	58
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	116	58
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	116	58
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	18,796	16,838
Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	18,796	16,838
Commercial and Industrial Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	17,230	14,915
Commercial and Industrial Loans [Member] | FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	824	1,222
Commercial and Industrial Loans [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	742	701
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	81,615	69,021
Consumer Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	6,848	7,188
Consumer Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	6,710	6,744
Consumer Loans [Member] | FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance		105
Consumer Loans [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	138	339
Consumer Loans [Member] | ALC [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	74,767	61,833
Consumer Loans [Member] | ALC [Member] | Performing Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	73,508	60,459
Consumer Loans [Member] | ALC [Member] | Nonperforming Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,259	1,374
Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	486	579
Other Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	486	579
Other Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	$ 486	577
Other Loans [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance		$ 2

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+ References

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- 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=28367877&loc=d3e4428-111522

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