COVERED ASSETS AND FDIC INDEMNIFICATION ASSET (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Carrying Amounts And Composition Of Covered Loans
Allowance for loan losses on covered loans	$ (3,505)		$ (7,745)
Total covered loans, net	1,474,189		2,187,898
Covered Loans
Carrying Amounts And Composition Of Covered Loans
Total covered loans	1,604,940	[1]	2,461,560	[2]
Covered discount	(127,246)		(265,917)
Net valuation of loans	1,477,694		2,195,643
Allowance for loan losses on covered loans	(3,505)		(7,745)
Total covered loans, net	1,474,189		2,187,898
Collectively evaluated for impairment	253,312	[1]	320,185	[2]
Acquired with deteriorated credit quality	1,224,382		1,875,458
Covered Loans | Covered Advances
Carrying Amounts And Composition Of Covered Loans
Total covered loans	253,300		320,200
Collectively evaluated for impairment	253,300		320,200
Covered Loans | CRE
Carrying Amounts And Composition Of Covered Loans
Total covered loans	751,719		1,267,363
Covered Loans | CRE | Covered Advances
Carrying Amounts And Composition Of Covered Loans
Total covered loans	59,400		46,700
Collectively evaluated for impairment	59,400		46,700
Covered Loans | CRE | CRE
Carrying Amounts And Composition Of Covered Loans
Total covered loans	705,665		1,103,530
Covered Loans | CRE | Construction and land
Carrying Amounts And Composition Of Covered Loans
Total covered loans	46,054		163,833
Covered Loans | C&I
Carrying Amounts And Composition Of Covered Loans
Total covered loans	252,986		426,621
Covered Loans | C&I | Covered Advances
Carrying Amounts And Composition Of Covered Loans
Total covered loans	154,800		230,600
Collectively evaluated for impairment	154,800		230,600
Covered Loans | Residential
Carrying Amounts And Composition Of Covered Loans
Total covered loans	537,249		693,603
Covered Loans | Residential | Covered Advances
Carrying Amounts And Composition Of Covered Loans
Total covered loans	11,800		12,000
Collectively evaluated for impairment	11,800		12,000
Covered Loans | Residential | Single-family
Carrying Amounts And Composition Of Covered Loans
Total covered loans	240,650		290,095
Covered Loans | Residential | Multifamily
Carrying Amounts And Composition Of Covered Loans
Total covered loans	296,599		403,508
Covered Loans | Consumer | Covered Advances
Carrying Amounts And Composition Of Covered Loans
Total covered loans	27,300		30,900
Collectively evaluated for impairment	27,300		30,900
Covered Loans | Consumer | Other Consumer
Carrying Amounts And Composition Of Covered Loans
Total covered loans	$ 62,986		$ 73,973

[1] Includes $253.3 million of covered advances comprised of $154.8 million, $59.4 million, $27.3 million and $11.8 million of C&I, CRE, consumer and residential loans, respectively.

[2] Includes $320.2 million of covered advances comprised of $230.6 million, $46.7 million, $30.9 million and $12.0 million of C&I, CRE, consumer and residential loans, respectively.