Loans Modified As Troubled Debt Restructurings Excluding on Nonaccrual Status (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013 Contract	Sep. 30, 2013 Contract	Sep. 30, 2012 Contract
Financing Receivable, Modifications [Line Items]
Total Contracts	3	3	1
Pre-Modification Recorded Investment	$ 1,001	$ 1,001	$ 351
Post-Modification Recorded Investment	926	926	319
Below Market Interest Rate \| Single Family Owner Occupied
Financing Receivable, Modifications [Line Items]
Total Contracts	1	1
Pre-Modification Recorded Investment	359	359
Post-Modification Recorded Investment	326	326
Below Market Interest Rate And Extended Payment Term \| Single Family Owner Occupied
Financing Receivable, Modifications [Line Items]
Total Contracts	2	2
Pre-Modification Recorded Investment	642	642
Post-Modification Recorded Investment	600	600
Extended Payment Terms \| Single Family Owner Occupied
Financing Receivable, Modifications [Line Items]
Total Contracts			1
Pre-Modification Recorded Investment			351
Post-Modification Recorded Investment			$ 319

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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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