Stock Compensation (Summary Of Stock Options Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Stock Compensation [Abstract]
Number of Options, Outstanding	380,773
Number of Options, Exercised	(40,973)
Number of Options, Outstanding	339,800
Number of Options, Exercisable at March 31, 2014	220,000
Weighted Average Exercise Price, Outstanding	$ 56.45
Weighted Average Exercise Price, Exercised	$ 49.63
Weighted Average Exercise Price, Outstanding	$ 57.27
Weighted Average Exercise Price, Exercisable at March 31, 2014	$ 54.70
Weighted Average Remaining Contract Life, Outstanding at March 31, 2014	5 years 9 months 22 days
Weighted Average Remaining Contract Life, Exercisable at March 31, 2014	5 years 5 months 1 day
Aggregate Intrinsic Value, Outstanding at March 31, 2014	$ 8,954
Aggregate Intrinsic Value, Exercisable at March 31, 2014	$ 6,363