Accrued Liabilities (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities [Abstract]
Accrued expenses	$ 65,665	$ 55,655
Accrued employee compensation and related expenses	77,027	75,232
Accrued taxes	18,963	28,439
Accrued customer programs	43,875	36,025
Total accrued liabilities	$ 205,530	$ 195,351