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Loans and Allowance for Loan Losses - Schedule of Average Net Investment Impaired Loans and Interest Income Recognized and Received on Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 18,564	$ 42,501
Interest Income Recognized	271	1,573
Interest Income Received	272	1,601
Construction, Land Development and Other Land Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	3,449	10,249
Interest Income Recognized	22	177
Interest Income Received	24	179
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	190	303
Interest Income Recognized	3	7
Interest Income Received	3	7
Secured by Multi-family Residential Properties [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	4,582	8,690
Interest Income Recognized	74	438
Interest Income Received	71	446
Secured by Non-farm, Non-residential Properties [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	10,183	22,272
Interest Income Recognized	171	918
Interest Income Received	173	935
Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	160	987
Interest Income Recognized	1	33
Interest Income Received	$ 1	$ 34

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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