COVERED ASSETS AND FDIC INDEMNIFICATION ASSET (Details 4) (Covered loans, USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Carrying Amounts And Composition Of Covered Loans
Total principal balance	$ 1,807,970	[1]	$ 2,195,643	[2]
Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	1,710,321		2,003,632
Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	21,304		43,604
Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	250,342		406,855
Doubtful
Carrying Amounts And Composition Of Covered Loans
Total principal balance	7,360		7,469
Residential
Carrying Amounts And Composition Of Covered Loans
Total principal balance	620,910		693,603
Residential | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	580,111		654,270
Residential | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	1,543		1,518
Residential | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	39,256		37,815
Residential | Residential Single-family
Carrying Amounts And Composition Of Covered Loans
Total principal balance	259,438		290,095
Residential | Residential Single-family | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	252,121		281,246
Residential | Residential Single-family | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	757		733
Residential | Residential Single-family | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	6,560		8,116
Residential | Residential Multifamily
Carrying Amounts And Composition Of Covered Loans
Total principal balance	361,472		403,508
Residential | Residential Multifamily | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	327,990		373,024
Residential | Residential Multifamily | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	786		785
Residential | Residential Multifamily | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	32,696		29,699
Commercial Real Estate ("CRE")
Carrying Amounts And Composition Of Covered Loans
Total principal balance	968,356		1,267,363
Commercial Real Estate ("CRE") | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	780,872		899,223
Commercial Real Estate ("CRE") | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	12,490		37,323
Commercial Real Estate ("CRE") | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	167,634		323,451
Commercial Real Estate ("CRE") | Doubtful
Carrying Amounts And Composition Of Covered Loans
Total principal balance	7,360		7,366
Commercial Real Estate ("CRE") | Commercial and Industrial Real Estate
Carrying Amounts And Composition Of Covered Loans
Total principal balance	895,140		1,103,530
Commercial Real Estate ("CRE") | Commercial and Industrial Real Estate | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	755,244		857,376
Commercial Real Estate ("CRE") | Commercial and Industrial Real Estate | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	3,255		27,851
Commercial Real Estate ("CRE") | Commercial and Industrial Real Estate | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	130,173		211,835
Commercial Real Estate ("CRE") | Commercial and Industrial Real Estate | Doubtful
Carrying Amounts And Composition Of Covered Loans
Total principal balance	6,468		6,468
Commercial Real Estate ("CRE") | Construction and Land
Carrying Amounts And Composition Of Covered Loans
Total principal balance	73,216		163,833
Commercial Real Estate ("CRE") | Construction and Land | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	25,628		41,847
Commercial Real Estate ("CRE") | Construction and Land | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	9,235		9,472
Commercial Real Estate ("CRE") | Construction and Land | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	37,461		111,616
Commercial Real Estate ("CRE") | Construction and Land | Doubtful
Carrying Amounts And Composition Of Covered Loans
Total principal balance	892		898
Other Loans
Carrying Amounts And Composition Of Covered Loans
Total principal balance	400,061		500,594
Other Loans | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	349,338		450,139
Other Loans | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	7,271		4,763
Other Loans | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	43,452		45,589
Other Loans | Doubtful
Carrying Amounts And Composition Of Covered Loans
Total principal balance			103
Other Loans | Commercial Business
Carrying Amounts And Composition Of Covered Loans
Total principal balance	331,117		426,621
Other Loans | Commercial Business | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	282,018		378,086
Other Loans | Commercial Business | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	7,171		4,635
Other Loans | Commercial Business | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	41,928		43,797
Other Loans | Commercial Business | Doubtful
Carrying Amounts And Composition Of Covered Loans
Total principal balance			103
Other Loans | Other Consumer
Carrying Amounts And Composition Of Covered Loans
Total principal balance	68,944		73,973
Other Loans | Other Consumer | Pass/Watch
Carrying Amounts And Composition Of Covered Loans
Total principal balance	67,320		72,053
Other Loans | Other Consumer | Special Mention
Carrying Amounts And Composition Of Covered Loans
Total principal balance	100		128
Other Loans | Other Consumer | Substandard
Carrying Amounts And Composition Of Covered Loans
Total principal balance	$ 1,524		$ 1,792

[1] Includes $252.2 million of covered advances comprising of $202.5 million, $29.0 million, $11.7 million and $9.0 million of commercial and industrial, consumer, residential and commercial real estate loans, respectively.

[2] Includes $320.2 million of covered advances comprising of $230.6 million, $46.7 million, $30.9 million and $12.0 million of commercial and industrial, commercial real estate, consumer and residential loans, respectively.