Inventories (Schedule Of Inventories) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Inventories Net [Line Items]
Raw materials and supplies	$ 86,007	$ 48,240
Work in progress	97,379	75,690
Finished goods	209,221	180,100
Inventory, gross, total	392,607	304,030
Less: allowance for obsolete and excess inventory	(30,426)	(26,228)	(24,948)	(24,201)
Total inventories	$ 362,181	$ 277,802