Stock-Based Compensation (Summary Of SAR Activity) (Details) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Stock Appreciation Rights [Roll Forward]
Outstanding, Shares, Beginning Balance	1,780,578
Granted, Shares	240,267
Forfeited, Shares	(3,485)
Expired, Shares	(668)
Exercised, Shares	(362,378)
Outstanding, Shares, Ending Balance	1,654,314
Outstanding, Weighted Average Exercise Price, Beginning Balance	$ 33.96
Granted, Weighted Average Exercise Price	41.40
Forfeited, Weighted Average Exercise Price	39.37
Expired, Weighted Average Exercise Price	37.33
Exercised, Weighted Average Exercise Price	32.88
Outstanding, Weighted Average Exercise Price, Ending Balance	$ 35.27
Outstanding, Weighted Average Remaining Contractual Term (in years)	4 years 6 months
Outstanding, Aggregate Intrinsic Value, Ending Balance	$ 19,029