Securities (Summary Of Maturities, Amortized Cost And Estimated Fair Values Of Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities [Abstract]
Due in one year or less, Amortized Cost	$ 52,801
Due from one to five years, Amortized Cost	101,061
Due from five to ten years, Amortized Cost	21,248
Due after ten years, Amortized Cost	101,256
Equity securities, Amortized Cost	77
Total Amortized Cost	276,443	$ 276,631
Due in one year or less, Estimated Fair Value	53,343
Due from one to five years, Estimated Fair Value	101,891
Due from five to ten years, Estimated Fair Value	21,661
Due after ten years, Estimated Fair Value	103,820
Equity securities, Estimated Fair Value	77
Total Estimated Fair Value	$ 280,792