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Short-Term Borrowings (Schedule Of Short-Term Borrowings And Weighted-Average Interest Rates) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Dec. 31, 2010
Short-term borrowings$ 341,004$ 367,761$ 341,004$ 367,761$ 298,232
Average amount outstanding  345,646  
Weighted average interest rate0.15% 0.15%  
Short-term borrowings, Weighted average interest132132390527 
Weighted average interest rate during period0.00% 0.00%  
Weighted average interest rate at end of period  0.15%  
Integra Bank [Member]
     
Short-term borrowings400 400  
Weighted average interest rate during period7.26% 7.26%  
Maturity date  Jan. 01, 2012  
Federal Funds Purchased [Member]
     
Short-term borrowings948 948  
Average amount outstanding  1,580  
Maximum amount outstanding at any month-end  17,178  
Weighted average interest rate0.03% 0.03%  
Weighted average interest rate at end of period  0.00%  
Repurchase Agreements [Member]
     
Short-term borrowings328,720 328,720  
Average amount outstanding  335,078  
Maximum amount outstanding at any month-end  366,103  
Weighted average interest rate0.15% 0.15%  
Weighted average interest rate at end of period  0.15%  
Other Short-Term Borrowings [Member]
     
Short-term borrowings11,336 11,336  
Average amount outstanding  8,988  
Maximum amount outstanding at any month-end  11,336  
Weighted average interest rate0.14% 0.14%  
Weighted average interest rate at end of period  0.00%  
Treasury Funds [Member]
     
Treasury funds$ 10,900 $ 10,900