Loans - Loans by Class Modified as Troubled Debt Restructurings with Payment Default (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2015 USD ($) SecurityLoan	Jun. 30, 2014 USD ($) SecurityLoan
Financing Receivable Modifications [Line Items]
Number of loans	3	6
Recorded Investment \| $	$ 132	$ 246
Residential Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of loans	1	2
Recorded Investment \| $	$ 76	$ 74
Residential Mortgage Loans [Member] \| One-to Four-Family [Member]
Financing Receivable Modifications [Line Items]
Number of loans	1	2
Recorded Investment \| $	$ 76	$ 74
Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of loans	2	4
Recorded Investment \| $	$ 56	$ 172
Consumer Loans [Member] \| Home Equity [Member]
Financing Receivable Modifications [Line Items]
Number of loans	2	4
Recorded Investment \| $	$ 56	$ 172

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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=49124121&loc=SL6953682-111524

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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

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