Securities (Schedule Of Amortized Cost And Estimated Fair Value Of Debt Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Securities [Abstract]
Due in one year or less, Available-for-sale, Amortized Cost	$ 19,341
Due after one year through five years, Available-for-sale, Amortized Cost	126,514
Due after five years through ten years, Available-for-sale, Amortized Cost	44,364
Due after ten years, Available-for-sale, Amortized Cost	6,344
Total debt securities, Amortized Cost	196,563	$ 211,393
Due in one year or less, Available-for-sale, Fair Value	19,412
Due after one year through five years, Available-for-sale, Fair Value	129,658
Due after five years through ten years, Available-for-sale, Fair Value	44,749
Due after ten years, Available-for-sale, Fair Value	6,554
Total debt securities, Fair Value	$ 200,373	$ 213,470