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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Inventory, Net [Abstract]    
Inventory, Raw Materials $ 8,879 $ 9,677
Inventory, Work in Process 30,367 37,000
Inventory, Finished Goods 50,803 34,709
Inventory, Net $ 90,049 $ 81,386