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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Purchases, Sales, and Transfers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale	$ 0	$ 88,591	$ 0	$ 88,591
Transfers (to) Held-For-Sale	(20,019)	(45,899)	(231,843)	(464,875)
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale	0	0	0	0
Transfers (to) Held-For-Sale	(1,133)	0	(1,133)	(3,924)
Commercial | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale		0		0
Transfers (to) Held-For-Sale		0		(1,329)
Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale	0	0	0	0
Transfers (to) Held-For-Sale	0	0	(71,449)	(6,583)
Commercial | SBA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale		0		0
Transfers (to) Held-For-Sale		0		(1,865)
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale		0		0
Transfers (to) Held-For-Sale		0		(1,528)
Consumer | Single family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale	0	88,591	0	88,591
Transfers (to) Held-For-Sale	(18,886)	$ (45,899)	(154,899)	$ (449,646)
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfers from Held-For-Sale	0		0
Transfers (to) Held-For-Sale	$ 0		$ (4,362)

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- Definition

Financing Receivable, Reclassification From Held-for-sale

+ References

No definition available.

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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 financing receivables reclassified to held for sale 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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