Investments (Amortized Cost And Estimated Fair Value Of Debt Securities By Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Investments [Abstract]
Securities Available-for-Sale, Due in one year or less, Cost	$ 8,246
Securities Available-for-Sale, Due after one year through five years, Cost	19,515
Securities Available-for-Sale, Due after five years through ten years, Cost	27,059
Securities Available-for-Sale, Due after ten years, Cost	191,402
Securities Available-for-Sale, Cost, Total	246,222
Securities Available-for-Sale, Due in one year or less, Estimated Fair Value	8,289
Securities Available-for-Sale, Due after one year through five years, Estimated Fair Value	20,162
Securities Available-for-Sale, Due after five years through ten years, Estimated Fair Value	27,672
Securities Available-for-Sale, Due after ten years, Estimated Fair Value	189,153
Securities Available-for-Sale, Estimated Fair Value, Total	245,276
Securities Held-to-Maturity, Due after ten years, Cost	93,089
Securities held-to-maturity, Amortized Cost	93,089	4,117
Securities Held-to-Maturity, Due after ten years, Estimated Fair Value	95,343
Securities held-to-maturity, Estimated Fair Value	$ 95,343	$ 5,335