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LOANS HELD FOR SALE - Portfolio of Loans Held For Sale (Parenthetical) (Detail) - Nonperforming Financing Receivable [Member] - Loans held for sale sold [Member] $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Financing Receivable Significant Sales	$ 4.8
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Accounts Notes And Loans Receivable [Line Items]
Financing Receivable Significant Sales	1.1
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Financing Receivable Significant Sales	$ 3.7

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount of any significant sales of financing receivables during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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