Interest Expense, Net (Components Of Interest Income / (Expense)) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Interest Expense, Net [Abstract]
Interest income	$ 127	$ 1,294	$ 1,008	$ 3,666
Interest expense	(29,160)	(27,043)	(85,254)	(81,514)
Total interest (expense), net	$ (29,033)	$ (25,749)	$ (84,246)	$ (77,848)