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Inventory Net (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Schedule of Inventory [Line Items]    
Finished goods $ 107,116 $ 106,972
Work-in process 37,024 36,070
Raw materials 28,401 28,219
Inventories, net $ 172,541 $ 171,261