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Time Deposit Maturities (Schedule Of Time Deposits Included In Interest-Bearing Deposits) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Time Deposit Maturities [Abstract]    
2012 $ 1,089,200  
2013 226,910  
2014 231,241  
2015 97,106  
2016 80,290  
2017 and after 57,146  
Time Deposits, including CDs 100000 or more 1,781,893  
Total certificates of deposit $100,000 and more $ 608,518 $ 561,750