v2.4.0.6
Covered Assets and FDIC Loss-sharing Asset (Covered OREO at Carrying Value) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Covered Assets And FDIC Loss Sharing Asset [Line Items]    
Balance, beginning of period $ 45,434  
Transfers in, write-downs 2,564 2,087
Balance, end of period 51,019 45,434
Covered Loans [Member]
    
Covered Assets And FDIC Loss Sharing Asset [Line Items]    
Balance, beginning of period 14,443 0
Established through acquisitions 10,387 17,394
Transfers in, net of write-downs ($2,564 and $2,087, respectively) 15,522 10,858
OREO improvements 5 85
Additional OREO write-downs (666) (1,182)
Proceeds from sale of OREO property (20,619) (17,890)
Gain on sale of OREO 9,054 5,178
Balance, end of period $ 28,126 $ 14,443