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Inventories (Schedule Of Inventories) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 112,416us-gaap_InventoryRawMaterialsAndSupplies $ 122,218us-gaap_InventoryRawMaterialsAndSupplies
Work in process 172,737us-gaap_InventoryWorkInProcess 176,141us-gaap_InventoryWorkInProcess
Finished goods 78,999us-gaap_InventoryFinishedGoods 84,544us-gaap_InventoryFinishedGoods
Inventories, net $ 364,152us-gaap_InventoryNet $ 382,903us-gaap_InventoryNet