Other Income/(Expense) - Net (Schedule Of Other Income/(Expense)- Net) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Income/(Expense) - Net [Abstract]
Market value adjustment on assets held in deferred compensation trust	$ (2,987)	$ 950
Gain/(loss) on disposal of property and equipment	(33)	48
Interest income - net	97	44
Other - net	(1)	(479)
Total other income/(expense) - net	$ (2,924)	$ 563