Loans Receivable, Net - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($) SecurityLoan	Sep. 30, 2016 USD ($) SecurityLoan	Sep. 30, 2017 USD ($) SecurityLoan	Sep. 30, 2016 USD ($) SecurityLoan
Residential Real Estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| SecurityLoan	2	1	6	3
Pre-modification Recorded Investment	$ 328	$ 455	$ 1,354	$ 674
Post-modification Recorded Investment	$ 357	$ 455	$ 1,356	$ 673
Commercial Real Estate - Owner Occupied
Financing Receivable, Modifications [Line Items]
Number of Loans \| SecurityLoan	1		4
Pre-modification Recorded Investment	$ 700		$ 3,309
Post-modification Recorded Investment	$ 700		$ 3,309
Commercial Real Estate - Investor
Financing Receivable, Modifications [Line Items]
Number of Loans \| SecurityLoan	1		4	1
Pre-modification Recorded Investment	$ 700		$ 6,362	$ 256
Post-modification Recorded Investment	$ 700		$ 6,484	$ 270
Subsequently Defaulted
Financing Receivable, Modifications [Line Items]
Number of Loans \| SecurityLoan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans \| SecurityLoan		1	1	3
Pre-modification Recorded Investment		$ 602	$ 665	$ 665
Post-modification Recorded Investment		$ 602	$ 665	$ 665

Financing Receivable Modifications Post Modification Recorded Investment During Period

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Financing Receivable Modifications Pre Modification Recorded Investment During Period

+ References

No definition available.

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- Definition

Trouble Debt Restructuring Modifications Recorded Investment

+ References

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+ References

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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=84173941&loc=SL6953676-111524

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