Sale Of Vision Bank Business (Schedule Of Balance Sheet Of SE LLC) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Loans	$ 4,324,383	$ 4,317,099
OREO	41,965	42,272
Other assets	139,123	120,748
Total assets	6,776,851	6,972,245	7,323,105
Other liabilities	64,262	61,639
Total liabilities and stockholders' equity	6,776,851	6,972,245
SE LLC [Member]
Cash	16,049
OREO	28,578
Other assets	18,417
Total assets	161,493
Intercompany borrowings	140,000
Other liabilities	4,623
Equity	16,870
Total liabilities and stockholders' equity	161,493
Performing Loan [Member] | SE LLC [Member]
Loans	16,123
Nonperforming Loan [Member] | SE LLC [Member]
Loans	$ 82,326