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Information Regarding Troubled Debt Restructurings (Detail) - Non-Covered Loans - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	$ 19,920	$ 12,155
Multi-Family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	10,736	2,652
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,861	6,370
One-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,971	987
Acquisition, Development and Construction
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings		27
Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	5,150	1,906
Other loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	202	213
Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	3,466	2,759
Accruing | Multi-Family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,981	2,017
Accruing | Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings		115
Accruing | One-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	222
Accruing | Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,263	627
Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	16,454	9,396
Non-Accrual | Multi-Family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	8,755	635
Non-Accrual | Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,861	6,255
Non-Accrual | One-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,749	987
Non-Accrual | Acquisition, Development and Construction
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings		27
Non-Accrual | Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	3,887	1,279
Non-Accrual | Other loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	$ 202	$ 213

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+ References

No definition available.

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- Definition

The amount of the outstanding recorded investment related to 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 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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