Investment Securities (Amortized Cost And Approximate Fair Value Of Investment Securities By Maturity Date) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Amortized cost and approximate fair value [Abstract]
One year or less, Amortized cost, Available for Sale	$ 21,290
One year or less, Fair Value, Available for Sale	21,500
One year or less, Amortized Cost, Held to Maturity	940
One year or less, Fair Value, Held to Maturity	942
More than one year through five years, Amortized Cost, Available for Sale	171,080
More than one year through five years, Fair Value, Available for Sale	171,850
More than one year through five years, Amortized Cost, Held to Maturity	7,055
More than one year through five years, Fair Value, Held to Maturity	7,202
More than five years through ten years, Amortized Cost, Available for Sale	112,732
More than five years through ten years, Fair Value, Available for Sale	112,482
More than five years through ten years, Amortized Cost, Held to Maturity	1,001
More than five years through ten years, Fair Value, Held to Maturity	1,041
More than ten years, Amortized Cost, Available for Sale	47,173
More than ten years, Fair Value, Available for Sale	47,399
More than ten years, Amortized Cost, Held to Maturity	3,366
More than ten years, Fair Value, Held to Maturity	3,695
Total, Amortized Cost, Available for Sale	352,275
Total, Fair Value, Available for Sale	353,231
Held-to-maturity Securities, Total	12,362	11,720
Fair Value, Held to Maturity	$ 12,880	$ 12,115