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Loans and Allowance for Loan Losses - Schedule of Number of Loans Modified Troubled Debt Restructuring by Loan Portfolio (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 SecurityLoan | Dec. 31, 2013 SecurityLoan
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | 29 | 40
Pre-Modification Outstanding Principal Balance | $ 8,210 | $ 12,025
Post-Modification Principal Balance | 4,859 | 7,666
Subsequent default number of loans | 3 | 6
Recorded Investment | 988 | 1,639
Construction, Land Development and Other Land Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | 8 | 10
Pre-Modification Outstanding Principal Balance | 5,910 | 7,551
Post-Modification Principal Balance | 2,827 | 3,837
Subsequent default number of loans | 0 | 2
Recorded Investment | 0 | 566
Secured by 1-4 Family Residential Properties [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | 9 | 17
Pre-Modification Outstanding Principal Balance | 452 | 1,375
Post-Modification Principal Balance | 383 | 1,067
Secured by Non-farm, Non-residential Properties [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | 8 | 9
Pre-Modification Outstanding Principal Balance | 1,688 | 2,683
Post-Modification Principal Balance | 1,533 | 2,418
Subsequent default number of loans | 3 | 4
Recorded Investment | 988 | 1,073
Commercial Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | 4 | 4
Pre-Modification Outstanding Principal Balance | 160 | 416
Post-Modification Principal Balance | $ 116 | $ 344

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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