Stock-Based Compensation (Summary Of Option Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Stock Options [Roll Forward]
Outstanding, Shares, Beginning Balance	452,323
Granted, shares	0
Foreited, shares	0
Expired, Shares	0
Exercised, Shares	(238,841)
Outstanding, Shares, Ending Balance	213,482
Outstanding, Weighted Average Exercise Price, Beginning Balance	$ 30.55
Granted, Weighted Average Exercise Price	$ 0.00
Forfeited, Weighted Average Exercise Price	$ 0.00
Expired, Weighted Average Exercise Price	$ 0.00
Exercised, Weighted Average Exercise Price	$ 30.58
Outstanding, Weighted Average Exercise Price, Ending Balance	$ 30.53
Outstanding, Weighted Average Remaining Contractual Term (in years)	0 years 7 months
Outstanding, Aggregate Intrinsic Value, Ending Balance	$ 3,410