NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012		Jun. 30, 2012		Dec. 31, 2011
Impaired loans disclosures
Unpaid principal balance	$ 201,088		$ 201,088		$ 279,181
Recorded investment	172,596		172,596		219,580
Related allowance	9,563		9,563		13,041
Average recorded investment	171,473		184,610		252,418
Interest income recognized (cash basis)	609	[1]	1,073	[1]	3,519	[1]
With Related Allowance
Impaired loans disclosures
Recorded investment	37,062		37,062		30,405
No Related Allowance
Impaired loans disclosures
Recorded investment	135,534		135,534		189,175
Residential | Single-family
Impaired loans disclosures
Unpaid principal balance	15,049		15,049		10,248
Recorded investment	13,614		13,614		9,113
Related allowance	806		806		1,131
Average recorded investment	13,922		14,453		9,408
Interest income recognized (cash basis)	15	[1]	15	[1]	65	[1]
Residential | Single-family | With Related Allowance
Impaired loans disclosures
Recorded investment	2,565		2,565		2,535
Residential | Single-family | No Related Allowance
Impaired loans disclosures
Recorded investment	11,049		11,049		6,578
Residential | Multifamily
Impaired loans disclosures
Unpaid principal balance	38,668		38,668		37,450
Recorded investment	36,107		36,107		31,792
Related allowance	1,136		1,136		1,124
Average recorded investment	36,615		37,031		35,855
Interest income recognized (cash basis)	125	[1]	229	[1]	473	[1]
Residential | Multifamily | With Related Allowance
Impaired loans disclosures
Recorded investment	8,796		8,796		3,520
Residential | Multifamily | No Related Allowance
Impaired loans disclosures
Recorded investment	27,311		27,311		28,272
Commercial Real Estate ("CRE") | Income producing
Impaired loans disclosures
Unpaid principal balance	54,372		54,372		69,664
Recorded investment	48,003		48,003		63,642
Related allowance	416		416		1,187
Average recorded investment	42,038		51,892		68,087
Interest income recognized (cash basis)	73	[1]	105	[1]	1,030	[1]
Commercial Real Estate ("CRE") | Income producing | With Related Allowance
Impaired loans disclosures
Recorded investment	3,985		3,985		7,941
Commercial Real Estate ("CRE") | Income producing | No Related Allowance
Impaired loans disclosures
Recorded investment	44,018		44,018		55,701
Commercial Real Estate ("CRE") | Construction
Impaired loans disclosures
Unpaid principal balance	33,051		33,051		75,714
Recorded investment	25,371		25,371		46,480
Related allowance					815
Average recorded investment	26,712		27,422		64,398
Interest income recognized (cash basis)	184	[1]	369	[1]	1,099	[1]
Commercial Real Estate ("CRE") | Construction | With Related Allowance
Impaired loans disclosures
Recorded investment					1,067
Commercial Real Estate ("CRE") | Construction | No Related Allowance
Impaired loans disclosures
Recorded investment	25,371		25,371		45,413
Commercial Real Estate ("CRE") | Land
Impaired loans disclosures
Unpaid principal balance	20,918		20,918		40,615
Recorded investment	18,546		18,546		34,498
Related allowance	2,044		2,044		3,949
Average recorded investment	18,627		18,878		36,002
Interest income recognized (cash basis)	26	[1]	48	[1]	341	[1]
Commercial Real Estate ("CRE") | Land | With Related Allowance
Impaired loans disclosures
Recorded investment	8,512		8,512		8,692
Commercial Real Estate ("CRE") | Land | No Related Allowance
Impaired loans disclosures
Recorded investment	10,034		10,034		25,806
Commercial and Industrial ("C&I") | Commercial Business
Impaired loans disclosures
Unpaid principal balance	33,384		33,384		38,857
Recorded investment	25,631		25,631		27,422
Related allowance	5,161		5,161		4,835
Average recorded investment	28,043		29,320		32,033
Interest income recognized (cash basis)	183	[1]	304	[1]	484	[1]
Commercial and Industrial ("C&I") | Commercial Business | With Related Allowance
Impaired loans disclosures
Recorded investment	13,204		13,204		6,650
Commercial and Industrial ("C&I") | Commercial Business | No Related Allowance
Impaired loans disclosures
Recorded investment	12,427		12,427		20,772
Commercial and Industrial ("C&I") | Trade finance
Impaired loans disclosures
Unpaid principal balance	1,919		1,919		4,127
Recorded investment	1,919		1,919		4,127
Average recorded investment	1,980		2,028		4,127
Commercial and Industrial ("C&I") | Trade finance | No Related Allowance
Impaired loans disclosures
Recorded investment	1,919		1,919		4,127
Consumer | Student loans
Impaired loans disclosures
Unpaid principal balance	99		99		257
Recorded investment	99		99		257
Average recorded investment	99		98		257
Consumer | Student loans | No Related Allowance
Impaired loans disclosures
Recorded investment	99		99		257
Consumer | Other Consumer
Impaired loans disclosures
Unpaid principal balance	3,628		3,628		2,249
Recorded investment	3,306		3,306		2,249
Average recorded investment	3,437		3,488		2,251
Interest income recognized (cash basis)	3	[1]	3	[1]	27	[1]
Consumer | Other Consumer | No Related Allowance
Impaired loans disclosures
Recorded investment	$ 3,306		$ 3,306		$ 2,249

[1] Excludes interest from performing TDRs.