LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 6) - Loans Receivable - Non-PCI loans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 36,191	$ 24,264	$ 34,790
Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	17,125	13,124	31,411
Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	18,590	6,644	676
Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	2,259	0
A/B Note
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	1,955
Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	476	2,237	748
CRE
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,788	8,624	17,456
CRE | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	521	691	15,923
CRE | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	791	5,100	540
CRE | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	2,165	0
CRE | A/B Note
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	884
CRE | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	476	668	109
C&I
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	34,124	3,162	15,624
C&I | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	16,325	2,677	15,488
C&I | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	17,799	73	136
C&I | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	94	0
C&I | A/B Note
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
C&I | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	318	0
Residential
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	279	11,974	1,071
Residential | Principal
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	279	9,756	0
Residential | Principal and Interest
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	1,471	0
Residential | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Residential | A/B Note
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	1,071
Residential | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 0	747	0
Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		504	639
Consumer | Principal
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	0
Consumer | Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0	0
Consumer | A/B Note
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0	0
Consumer | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 504	$ 639