NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 11) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013		Sep. 30, 2013		Dec. 31, 2012
Impaired loans disclosures
Unpaid principal balance	$ 213,803		$ 213,803		$ 235,040
Recorded Investment With No Allowance	120,548		120,548		167,147
Recorded Investment With Allowance	62,621		62,621		33,349
Recorded investment	183,169	[1]	183,169	[1]	200,496	[1]
Related allowance	17,293		17,293		11,527
Average recorded investment	182,828		192,265		213,957
Interest income recognized (cash basis)	809	[2]	1,724	[2]	2,269	[2]
Covered nonaccrual loans	164,303	[3],[4],[5]	164,303	[3],[4],[5]	204,310	[3],[4],[5]
Covered loans accounted for under ASC 310-10
Impaired loans disclosures
Covered nonaccrual loans	26,800		26,800		29,600
Residential | Single-family
Impaired loans disclosures
Unpaid principal balance	13,964		13,964		19,318
Recorded Investment With No Allowance	11,486		11,486		15,610
Recorded Investment With Allowance	1,596		1,596		2,598
Recorded investment	13,082	[1]	13,082	[1]	18,208	[1]
Related allowance	283		283		721
Average recorded investment	13,131		13,464		19,094
Interest income recognized (cash basis)	76	[2]	198	[2]	88	[2]
Residential | Multifamily
Impaired loans disclosures
Unpaid principal balance	46,735		46,735		57,464
Recorded Investment With No Allowance	38,644		38,644		45,511
Recorded Investment With Allowance	5,256		5,256		8,756
Recorded investment	43,900	[1]	43,900	[1]	54,267	[1]
Related allowance	526		526		2,410
Average recorded investment	43,452		43,465		54,707
Interest income recognized (cash basis)	251	[2]	445	[2]	403	[2]
Commercial Real Estate ("CRE") | Income producing
Impaired loans disclosures
Unpaid principal balance	70,797		70,797		59,574
Recorded Investment With No Allowance	43,577		43,577		47,019
Recorded Investment With Allowance	19,415		19,415		7,656
Recorded investment	62,992	[1]	62,992	[1]	54,675	[1]
Related allowance	3,929		3,929		2,559
Average recorded investment	64,130		68,336		57,854
Interest income recognized (cash basis)	254	[2]	546	[2]	304	[2]
Commercial Real Estate ("CRE") | Construction
Impaired loans disclosures
Unpaid principal balance	6,888		6,888		30,815
Recorded Investment With No Allowance	6,888		6,888		25,530
Recorded Investment With Allowance					1,509
Recorded investment	6,888	[1]	6,888	[1]	27,039	[1]
Related allowance					142
Average recorded investment	6,888		6,888		22,696
Interest income recognized (cash basis)	33	[2]	49	[2]	723	[2]
Commercial Real Estate ("CRE") | Land
Impaired loans disclosures
Unpaid principal balance	17,999		17,999		20,317
Recorded Investment With No Allowance	4,945		4,945		6,132
Recorded Investment With Allowance	7,944		7,944		8,995
Recorded investment	12,889	[1]	12,889	[1]	15,127	[1]
Related allowance	2,116		2,116		2,860
Average recorded investment	12,943		13,049		17,769
Interest income recognized (cash basis)	13	[2]	41	[2]	76	[2]
Commercial and Industrial ("C&I") | Commercial Business
Impaired loans disclosures
Unpaid principal balance	51,687		51,687		38,630
Recorded Investment With No Allowance	12,088		12,088		20,235
Recorded Investment With Allowance	27,639		27,639		3,835
Recorded investment	39,727	[1]	39,727	[1]	24,070	[1]
Related allowance	9,668		9,668		2,835
Average recorded investment	38,604		42,612		33,343
Interest income recognized (cash basis)	164	[2]	395	[2]	614	[2]
Commercial and Industrial ("C&I") | Trade finance
Impaired loans disclosures
Unpaid principal balance	2,745		2,745		4,124
Recorded Investment With No Allowance	392		392		2,582
Recorded Investment With Allowance	771		771
Recorded investment	1,163	[1]	1,163	[1]	2,582	[1]
Related allowance	771		771
Average recorded investment	1,088		2,029		3,863
Interest income recognized (cash basis)	14	[2]	41	[2]	48	[2]
Consumer | Student loans
Impaired loans disclosures
Unpaid principal balance	1,086		1,086
Recorded Investment With No Allowance	1,017		1,017
Recorded investment	1,017	[1]	1,017	[1]
Average recorded investment	1,076		869
Consumer | Other Consumer
Impaired loans disclosures
Unpaid principal balance	1,902		1,902		4,798
Recorded Investment With No Allowance	1,511		1,511		4,528
Recorded investment	1,511	[1]	1,511	[1]	4,528	[1]
Average recorded investment	1,516		1,553		4,631
Interest income recognized (cash basis)	$ 4	[2]	$ 9	[2]	$ 13	[2]

[1] Excludes $26.8 million and $29.6 million of covered non-accrual loans at September 30, 2013 and December 31, 2012, respectively, accounted for under ASC 310-10, of which some loans have additional partial balances accounted for under ASC 310-30.

[2] Excludes interest from performing TDRs.

[3] Represents principal balance net of discount.

[4] Includes $26.8 million and $29.6 million of loans at September 30, 2013 and December 31, 2012, respectively, accounted for under ASC 310-10, of which some loans have additional partial balances accounted for under ASC 310-30.

[5] Covered nonaccrual loans include loans that meet the criteria for nonaccrual but have a yield accreted through interest income under ASC 310-30 and all losses on covered loans are 80% reimbursed by the FDIC.