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Investment Securities (Scheduled Maturities Of Securities Available For Sale And Securities Held To Maturity) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Investment Securities [Abstract]    
Debt securities available for sale, Due in one year or less, Amortized Cost $ 30,008  
Debt securities available for sale, Due from one to five years, Amortized Cost 166,519  
Debt securities available for sale, Due after five years through ten years, Amortized Cost 328,808  
Debt securities available for sale, Due after ten years, Amortized Cost 248,755  
Debt securities available for sale, Amortized Cost 774,090  
Debt securities available for sale, Due in one year or less, Fair Value 30,008  
Debt securities available for sale, Due from one to five years, Fair Value 166,266  
Debt securities available for sale, Due after five years through ten years, Fair Value 328,993  
Debt securities available for sale, Due after ten years, Fair Value 247,372  
Debt securities available for sale, Fair Value 772,639  
Debt securities held to maturity, Due in one year or less, Amortized Cost 24,064  
Debt securities held to maturity, Due from one to five years, Amortized Cost 161,041  
Debt securities held to maturity, Due after five years through ten years, Amortized Cost 107,099  
Debt securities held to maturity, Due after ten years, Amortized Cost 28,616  
Securities held to maturity, Amortized Cost 320,820 $ 294,438
Debt securities held to maturity, Due in one year or less, Fair Value 24,158  
Debt securities held to maturity, Due from one to five years, Fair Value 164,083  
Debt securities held to maturity, Due after five years through ten years, Fair Value 108,259  
Debt securities held to maturity, Due after ten years, Fair Value 28,373  
Securities held to maturity, Fair Value $ 324,873 $ 298,695