Allowance For Loan Losses And Credit Quality (Schedule Of Allowance For Loan Losses For Covered And Non-Covered Loan Portfolio) (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Allowance for loan losses, Beginning balance	$ 136,100	$ 55,768
Provision for loan losses before benefit attributable to FDIC loss sharing agreements	42,167	51,437
Benefit attributable to FDIC loss share agreements	(26,706)	(25,337)
Provision charged to operations	15,461	26,100
Provision recorded through FDIC loss share receivable	26,706	25,337
Transfer of balance to OREO	(7,325)
Loans charged off	(5,962)	(14,596)
Recoveries	5,008	3,391
Allowance for loan losses, Ending balance	169,988	96,000
Covered Loan [Member]
Allowance for loan losses, Beginning balance	73,640	145
Provision for loan losses before benefit attributable to FDIC loss sharing agreements	31,115	32,696
Benefit attributable to FDIC loss share agreements	(26,706)	(25,337)
Provision charged to operations	4,409	7,359
Provision recorded through FDIC loss share receivable	26,706	25,337
Transfer of balance to OREO	(7,325)
Loans charged off	(225)	(1,094)
Recoveries	510	11
Allowance for loan losses, Ending balance	97,715	31,758
Non-Covered Loan [Member]
Allowance for loan losses, Beginning balance	62,460	55,623
Provision for loan losses before benefit attributable to FDIC loss sharing agreements	11,052	18,741
Provision charged to operations	11,052	18,741
Loans charged off	(5,737)	(13,502)
Recoveries	4,498	3,380
Allowance for loan losses, Ending balance	$ 72,273	$ 64,242