Share-Based Payments (Schedule Of Information Regarding Stock Options Outstanding) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options outstanding, Number	55	128
Options outstanding, weighted average per share exercise price	$ 52.40	$ 52.59
Options outstanding, aggregate intrinsic value	$ 35
Options outstanding, weighted average remaining contractual term (in years)	6 years 3 months 28 days
Options exercisable, Number	39
Options exercisable, weighted average per share exercise price	$ 51.67
Options exercisable, aggregate intrinsic value	$ 35
Options exercisable, weighted average remaining contractual term (in years)	6 years 1 month 2 days