Share-Based Compensation (Summary Of Stock Option Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding Shares, Beginning balance	451,025
Granted, Shares	80,000	0	0
Exercised, Shares	(86,275)
Cancelled or expired, Shares	(11,000)
Outstanding Shares, Ending balance	433,750	451,025
Exercisable, Shares	353,750
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, Weighted-Average Exercise Price, Beginning balance (in dollars per share)	$ 47.22
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 43.53
Exercised, Weighted-Average Exercise Price (in dollars per share)	$ 33.93
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 50.07
Outstanding, Weighted-Average Exercise Price, Ending balance (in dollars per share)	$ 49.11	$ 47.22
Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 50.37
Outstanding, Weighted-Average Remaining Contractual Term (Years)	4 years 2 months 12 days
Exercisable, Weighted-Average Remaining Contractual Term (Years)	3 years 1 month 6 days
Outstanding, Aggregate Intrinsic Value	$ 1,287
Exercisable, Aggregate Intrinsic Value	$ 792