NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Troubled Debt Restructurings) (Details) (USD $)																9 Months Ended			9 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Performing [Member]	Dec. 31, 2010 Performing [Member]	Sep. 30, 2011 Performing [Member] A/B Note Splits [Member]	Dec. 31, 2010 Performing [Member] A/B Note Splits [Member]	Sep. 30, 2011 Performing [Member] Residential [Member]	Sep. 30, 2011 Performing [Member] Commercial and Industrial [Member]	Sep. 30, 2011 Performing [Member] Commercial Real Estate [Member]	Sep. 30, 2011 Nonperforming [Member]	Dec. 31, 2010 Nonperforming [Member]	Sep. 30, 2011 Nonperforming [Member] Residential [Member]	Sep. 30, 2011 Nonperforming [Member] Commercial and Industrial [Member]	Sep. 30, 2011 Nonperforming [Member] Commercial Real Estate [Member]	Sep. 30, 2011 A/B Note Splits [Member] Residential [Member]	Sep. 30, 2011 Residential [Member]	Sep. 30, 2011 Commercial and Industrial [Member]	Sep. 30, 2011 Unallocated [Member]	Sep. 30, 2011 Commercial Real Estate [Member]	Sep. 30, 2011 Consumer [Member]	Sep. 30, 2011 Residential, Single-family [Member]		Sep. 30, 2011 Residential, Single-family [Member]		Sep. 30, 2011 Residential, Single-family [Member]	Sep. 30, 2011 Residential, Multifamily [Member]		Sep. 30, 2011 Residential, Multifamily [Member]		Sep. 30, 2011 Residential, Multifamily [Member]	Sep. 30, 2011 CRE, Income Producing [Member]		Sep. 30, 2011 CRE, Income Producing [Member]		Sep. 30, 2011 CRE, Income Producing [Member]	Sep. 30, 2011 CRE, Construction [Member]		Sep. 30, 2011 CRE, Construction [Member]		Sep. 30, 2011 CRE, Construction [Member]	Sep. 30, 2011 CRE, Land [Member]		Sep. 30, 2011 CRE, Land [Member]		Sep. 30, 2011 CRE, Land [Member]	Sep. 30, 2011 C&I, Commercial Business [Member]		Sep. 30, 2011 C&I, Commercial Business [Member]		Sep. 30, 2011 C&I, Commercial Business [Member]	Sep. 30, 2011 C&I, Trade Finance [Member]		Sep. 30, 2011 C&I, Trade Finance [Member]		Sep. 30, 2011 C&I, Trade Finance [Member]	Sep. 30, 2011 Consumer, Student Loans [Member]		Sep. 30, 2011 Consumer, Student Loans [Member]		Sep. 30, 2011 Consumer, Student Loans [Member]	Sep. 30, 2011 Other Consumer [Member]		Sep. 30, 2011 Other Consumer [Member]		Sep. 30, 2011 Other Consumer [Member]
Restructured loans [Abstract]
Recorded investment			$ 81,000,000	$ 122,100,000	$ 29,100,000	$ 57,300,000	$ 20,600,000	$ 11,200,000	$ 49,300,000	$ 39,000,000	$ 42,100,000	$ 2,000,000	$ 900,000	$ 36,100,000
Number of Contracts																					4		9			4		11			2		8			1		2			6		15			4		16			1		1			0		0			0		0
Pre-Modification Outstanding Recorded Investment																					990,000		2,204,000			1,722,000		5,136,000			5,116,000		22,648,000			2,859,000		3,267,000			4,311,000		40,651,000			548,000		8,916,000			4,127,000		4,127,000			0		0			0		0
Post-Modification Outstanding Recorded Investment																					987,000	[1]	2,089,000	[1]		1,040,000	[1]	4,436,000	[1]		5,097,000	[1]	19,273,000	[1]		2,859,000	[1]	3,748,000	[1]		4,307,000	[1]	36,111,000	[1]		542,000	[1]	7,233,000	[1]		4,127,000	[1]	4,127,000	[1]		0	[1]	0	[1]		0	[1]	0	[1]
Financial Impact																					328,000	[2]	430,000	[2]		1,220,000	[2]	1,344,000	[2]		0	[2]	3,796,000	[2]		0	[2]	0	[2]		1,507,000	[2]	1,874,000	[2]		885,000	[2]	2,053,000	[2]		0	[2]	0	[2]		0	[2]	0	[2]		0	[2]	0	[2]
Loans modified as TDRs [Abstract]
Modified troubled debt restructurings															13,700,000		0	0
Period beyond which a TDR generally becomes delinquent (in days)																90D	30D		30D	30D
Allowance for non-covered loans receivable	(211,738,000)	(230,408,000)	3,700,000							278,000
Number of Contracts																									0					0					2					2					5					1					0					0					0
Recorded Investment																									$ 0					$ 0					$ 17,546,000					$ 2,398,000					$ 13,241,000					$ 51,000					$ 0					$ 0					$ 0

[1] Includes subsequent payments after modification and reflects the balance as of September 30, 2011.

[2] The financial impact includes chargeoffs and specific reserves recorded at modification date.