Loans Modified as Troubled Debt Restructurings by Type of Concession Made and Loan Class (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013 Contract	Dec. 31, 2012 Contract
Financing Receivable, Modifications [Line Items]
Total Contracts	8	3
Pre-Modification Recorded Investment	$ 2,296	$ 6,173
Post-Modification Recorded Investment	2,153	6,141
Below Market Interest Rate \| Single Family Owner Occupied
Financing Receivable, Modifications [Line Items]
Total Contracts	2
Pre-Modification Recorded Investment	601
Post-Modification Recorded Investment	557
Below Market Interest Rate And Extended Payment Term \| Single Family Owner Occupied
Financing Receivable, Modifications [Line Items]
Total Contracts	4
Pre-Modification Recorded Investment	809
Post-Modification Recorded Investment	757
Below Market Interest Rate And Extended Payment Term \| Single-family Non-owner Occupied
Financing Receivable, Modifications [Line Items]
Total Contracts	1
Pre-Modification Recorded Investment	375
Post-Modification Recorded Investment	328
Below Market Interest Rate And Extended Payment Term \| Non-farm, Non-residential
Financing Receivable, Modifications [Line Items]
Total Contracts	1	2
Pre-Modification Recorded Investment	511	5,822
Post-Modification Recorded Investment	$ 511	$ 5,822

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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

+ Details

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

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