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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Inventories [Abstract]    
Finished goods $ 61,824 $ 42,251
Work-in-process 4,221 164
Raw materials 53,217 45,991
Inventory, Net $ 119,262 $ 88,406