NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 7) (Non-covered loans, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 contract		Dec. 31, 2013 contract		Dec. 31, 2012 contract
CRE | Land
Restructured loans disclosures
Number of contracts modified as TDRs					3
Pre-Modification Outstanding Recorded Balance					$ 1,610
Post-Modification Outstanding Recorded Balance					1,059	[1]
Financial Impact					395	[2]
CRE | Income producing
Restructured loans disclosures
Number of contracts modified as TDRs	6		6		8
Pre-Modification Outstanding Recorded Balance	8,829		26,021		10,118
Post-Modification Outstanding Recorded Balance	8,624	[1]	17,456	[1]	8,162	[1]
Financial Impact	43	[2]	219	[2]	1,169	[2]
C&I | Commercial business
Restructured loans disclosures
Number of contracts modified as TDRs	13		6		14
Pre-Modification Outstanding Recorded Balance	4,379		16,220		5,101
Post-Modification Outstanding Recorded Balance	3,089	[1]	15,624	[1]	4,374	[1]
Financial Impact	2,205	[2]	4,274	[2]	560	[2]
C&I | Trade finance
Restructured loans disclosures
Number of contracts modified as TDRs	1				2
Pre-Modification Outstanding Recorded Balance	190				2,510
Post-Modification Outstanding Recorded Balance	73	[1]			579	[1]
Financial Impact	14	[2]			1,506	[2]
Residential | Single-family
Restructured loans disclosures
Number of contracts modified as TDRs	9				12
Pre-Modification Outstanding Recorded Balance	11,454				6,227
Post-Modification Outstanding Recorded Balance	8,269	[1]			5,556	[1]
Financial Impact					938	[2]
Residential | Multifamily
Restructured loans disclosures
Number of contracts modified as TDRs	6		1		16
Pre-Modification Outstanding Recorded Balance	5,471		1,093		28,736
Post-Modification Outstanding Recorded Balance	3,705	[1]	1,071	[1]	28,153	[1]
Financial Impact	7	[2]			3,344	[2]
Consumer | Other Consumer
Restructured loans disclosures
Number of contracts modified as TDRs	1		1		1
Pre-Modification Outstanding Recorded Balance	509		651		108
Post-Modification Outstanding Recorded Balance	$ 504	[1]	$ 639	[1]	$ 108	[1]

[1] Includes subsequent payments after modification.

[2] The financial impact includes charge-offs and specific reserves recorded at modification date.