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Inventories (Schedule Of Inventories) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 174,255 $ 184,420
Work in process 251,485 245,160
Finished goods 83,426 78,446
Inventories, gross 509,166 508,026
Reserves (17,891) (17,612)
Inventories, net $ 491,275 $ 490,414