Securities (Summary Of Maturities, Amortized Cost And Estimated Fair Values Of Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Available-for-sale Securities [Abstract]
Due in one year or less, Amortized Cost	$ 56,757
Due from one to five years, Amortized Cost	91,359
Due from five to ten years, Amortized Cost	16,653
Due after ten years, Amortized Cost	88,825
Equity securities, Amortized Cost	77
Total Amortized Cost	253,671	$ 276,443	$ 272,414
Due in one year or less, Estimated Fair Value	57,762
Due from one to five years, Estimated Fair Value	93,272
Due from five to ten years, Estimated Fair Value	17,304
Due after ten years, Estimated Fair Value	93,218
Equity securities, Estimated Fair Value	77
Total Estimated Fair Value	$ 261,633