Investments (Amortized Cost And Estimated Fair Value Of Debt Securities By Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Investments [Abstract]
Securities Available-for-Sale, Due in one year or less, Cost	$ 8,566
Securities Available-for-Sale, Due after one year through five years, Cost	17,995
Securities Available-for-Sale, Due after five years through ten years, Cost	30,416
Securities Available-for-Sale, Due after ten years, Cost	196,777
Securities Available-for-Sale, Cost, Total	253,754
Securities Available-for-Sale, Due in one year or less, Estimated Fair Value	8,606
Securities Available-for-Sale, Due after one year through five years, Estimated Fair Value	18,533
Securities Available-for-Sale, Due after five years through ten years, Estimated Fair Value	31,321
Securities Available-for-Sale, Due after ten years, Estimated Fair Value	194,943
Securities Available-for-Sale, Estimated Fair Value, Total	253,403
Securities Held-to-Maturity, Due after ten years, Cost	96,039
Securities Held-to-Maturity, Cost, Total	96,039	4,117
Securities Held-to-Maturity, Due after ten years, Estimated Fair Value	98,461
Securities held-to-maturity, Estimated Fair Value	$ 98,461	$ 5,335