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Loans Receivable, Net - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) SecurityLoan	Mar. 31, 2018 USD ($) SecurityLoan
Commercial real estate – investor
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan		1
Pre-modification Recorded Investment		$ 179
Post-modification Recorded Investment		$ 180
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan		1
Pre-modification Recorded Investment		$ 237
Post-modification Recorded Investment		$ 243
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	3	2
Pre-modification Recorded Investment	$ 589	$ 257
Post-modification Recorded Investment	$ 621	$ 270
Subsequently defaulted
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	0	0
Pre-modification Recorded Investment	$ 0
Recorded Investment		$ 0

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Financing Receivable Modifications Post Modification Recorded Investment During Period

+ References

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- Definition

Financing Receivable Modifications Pre Modification Recorded Investment During Period

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- Definition

Trouble Debt Restructuring Modifications Recorded Investment

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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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