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Information Regarding Troubled Debt Restructurings (Detail) - Non-Covered Loans - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	$ 40,044	$ 19,920
Multi-Family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	10,023	10,736
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	891	1,861
One-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	3,240	1,971
Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	25,689	5,150
Other loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	201	202
Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	2,358	3,466
Accruing | Multi-Family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	1,962	1,981
Accruing | One-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	219	222
Accruing | Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	177	1,263
Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	37,686	16,454
Non-Accrual | Multi-Family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	8,061	8,755
Non-Accrual | Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	891	1,861
Non-Accrual | One-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	3,021	1,749
Non-Accrual | Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	25,512	3,887
Non-Accrual | Other loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	$ 201	$ 202

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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=82895541&loc=d3e18845-111554

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