Other Income/(Expense) - Net (Schedule Of Other Income/(Expense)- Net) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Income/(Expense) - Net [Abstract]
Market value adjustment on assets held in deferred compensation trust	$ 3,188	$ 498	$ 201	$ 1,448
Loss on disposal of property and equipment	(57)	(63)	(90)	(15)
Interest income - net	85	86	182	130
Other - net	1	15		(464)
Total other income/(expense) - net	$ 3,217	$ 536	$ 293	$ 1,099