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Loans and Allowance for Loan Losses - Schedule of Carrying Amount of Loans by Credit Quality Indicator (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Ending balance	$ 260,133	$ 274,317
FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	167,662	191,175
FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	154,227	160,421
FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	4,174	15,385
FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	9,261	15,369
ALC [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	92,471	83,142
ALC [Member] | Performing Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	90,680	81,237
ALC [Member] | Nonperforming Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,791	1,905
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	12,363	10,431
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	12,363	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	10,388	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	1,975	2,590
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	49,693	52,104
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	30,564	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	29,284	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	236	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	1,044	2,201
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	19,129	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	18,635	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	494	531
Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	17,163	20,403
Real Estate [Member] | Secured by Multi-family Residential Properties [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	17,163	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	14,813	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	2,350	2,370
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	81,621	104,883
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	81,621	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	75,431	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	3,158	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	3,032	7,166
Real Estate [Member] | Other Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	57	58
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	57	58
Real Estate [Member] | Other Real Estate Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	57	58
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	18,198	16,838
Commercial and Industrial Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	18,198	16,838
Commercial and Industrial Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	16,658	14,915
Commercial and Industrial Loans [Member] | FUSB [Member] | Special Mention 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	780	1,222
Commercial and Industrial Loans [Member] | FUSB [Member] | Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	760	701
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	80,252	69,021
Consumer Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	6,910	7,188
Consumer Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	6,810	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	100	339
Consumer Loans [Member] | ALC [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	73,342	61,833
Consumer Loans [Member] | ALC [Member] | Performing Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	72,045	60,459
Consumer Loans [Member] | ALC [Member] | Nonperforming Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Ending balance	1,297	1,374
Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	786	579
Other Loans [Member] | FUSB [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	786	579
Other Loans [Member] | FUSB [Member] | Pass 1-5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Ending balance	$ 786	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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