Loans - Loans by Class Modified as Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2016 USD ($) Loan	Mar. 31, 2015 USD ($) Loan
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	4	7
Pre-Modification Outstanding Recorded Investment	$ 327	$ 795
Post-Modification Recorded Investment	$ 345	$ 808
Commercial Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	1
Pre-Modification Outstanding Recorded Investment	$ 88
Post-Modification Recorded Investment	$ 88
Commercial Loans [Member] \| Nonresidential [Member]
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	1
Pre-Modification Outstanding Recorded Investment	$ 88
Post-Modification Recorded Investment	$ 88
Residential Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	2	5
Pre-Modification Outstanding Recorded Investment	$ 219	$ 441
Post-Modification Recorded Investment	$ 237	$ 454
Residential Mortgage Loans [Member] \| One-to Four-Family [Member]
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	2	5
Pre-Modification Outstanding Recorded Investment	$ 219	$ 441
Post-Modification Recorded Investment	$ 237	$ 454
Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	1	2
Pre-Modification Outstanding Recorded Investment	$ 20	$ 354
Post-Modification Recorded Investment	$ 20	$ 354
Consumer Loans [Member] \| Home Equity [Member]
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	1	2
Pre-Modification Outstanding Recorded Investment	$ 20	$ 354
Post-Modification Recorded Investment	$ 20	$ 354

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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=49124121&loc=SL6953676-111524

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

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