LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 7) - Loans Receivable - Non-PCI Loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	$ 459	$ 5,614	$ 34,454	$ 37,734
Principal
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	427	4,423	30,595	17,520
Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0		2,079
Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	32	0	32	0
Other
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0	403	1,748	497
Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment		788		19,717
CRE
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0	1,191	20,948	2,090
CRE | Principal
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0	0	19,800	0
CRE | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0		0
CRE | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0	0	0	0
CRE | Other
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0	403	1,148	497
CRE | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment		788		1,593
C&I
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	459	4,423	12,113	35,365
C&I | Principal
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	427	4,423	10,193	17,241
C&I | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	0		1,288
C&I | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	32	0	32	0
C&I | Other
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment	$ 0	0	600	0
C&I | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment		$ 0		18,124
Residential
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			1,058	279
Residential | Principal
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			267	279
Residential | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			791
Residential | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			0	0
Residential | Other
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			0	0
Residential | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment				0
Consumer
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			335	0
Consumer | Principal
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			335	0
Consumer | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			0
Consumer | Interest Deferments
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			0	0
Consumer | Other
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			$ 0	0
Consumer | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment				$ 0