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Inventories, Net (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Inventories, Net [Abstract]    
Finished goods, net $ 171,287 $ 165,503
Work in process, net 6,809 5,144
Raw materials, net 87,864 77,450
Total inventories, net $ 265,960 $ 248,097