Share-Based Compensation (Summary Of Stock Award Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Number of Shares
Number of Shares, December 31, 2013	2,483
Granted, Number of Shares	535
Cancelled, Number of Shares	(65)
Exercised, Number of Shares	(270)
Number of Shares, June 30, 2014	2,683
Weighted Average Exercise Price
Weighted Average price, December 31, 2013 (in dollars per share)	$ 16.05
Granted, Weighted Average price (in dollars per share)	$ 28.02
Cancelled, Weighted Average price (in dollars per share)	$ 21.47
Exercised, Weighted Average price (in dollars per share)	$ 14.35
Weighted Average price, June 30, 2014 (in dollars per share)	$ 18.48