Annual report pursuant to Section 13 and 15(d)

Inventories - Classes of Inventory (Detail)

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Inventories - Classes of Inventory (Detail) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Schedule Of Inventory [Line Items]    
Raw materials $ 19,600,000 $ 21,700,000
Work in process 1,900,000 2,500,000
Finished goods 317,900,000 223,500,000
Total $ 339,411,000 $ 247,696,000