Other (Expense)/Income - Net (Schedule Of Other (Expense)/Income - Net) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other (Expense)/Income - Net [Abstract]
Market value adjustment on assets held in deferred compensation trust	$ 7,408	$ (130)	$ (2,164)	$ 2,207
Interest income	116	112	225	214
Other - net	(10)	31	(13)	31
Total other (expense)/income - net	$ 7,514	$ 13	$ (1,952)	$ 2,452