Securities (Summary Of Maturities, Amortized Cost And Estimated Fair Values Of Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Abstract]
Due in one year or less, Amortized Cost	$ 30,028
Due from one to five years, Amortized Cost	88,141
Due from five to ten years, Amortized Cost	75,737
Due after ten years, Amortized Cost	107,814
Total Amortized Cost	301,720	$ 272,215
Due in one year or less, Estimated Fair Value	29,995
Due from one to five years, Estimated Fair Value	88,321
Due from five to ten years, Estimated Fair Value	75,248
Due after ten years, Estimated Fair Value	111,481
Total Estimated Fair Value	$ 305,045	$ 276,355	[1]

[1] Derived from audited consolidated financial statements