Accrued Liabilities (Schedule Of Accrued Liabilities) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Accrued Liabilities [Abstract]
Accrued expenses	$ 41,081	$ 36,150
Accrued employee compensation and related expenses	49,076	47,914
Accrued taxes	16,642	12,320
Accrued customer programs	30,000	22,214
Accrued liabilities	$ 136,799	$ 118,598