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Securities Available For Sale (Schedule Of Maturities Distribution Of The Amortized Cost And Estimated Fair Value Of Securities Available For Sale) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Securities Available For Sale [Abstract]    
Amortized Cost, Due one year of less $ 8  
Amortized Cost, Due after one year through five years 5,530  
Amortized Cost, Due after five years through ten years 15,602  
Amortized Cost, Due after ten years 451,763  
Securities Available for Sale, Amortized Cost 472,903 $ 458,370
Estimated Fair Value, Due one year of less 8  
Estimated Fair Value, Due after one year through five years 5,603  
Estimated Fair Value, Due after five years through ten years 16,333  
Estimated Fair Value, Due after ten years 458,194  
Securities Available for Sale, Estimated Fair Value $ 480,138 $ 470,525