Quarterly report pursuant to Section 13 or 15(d)

Inventories - Classes of Inventory (Detail)

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Inventories - Classes of Inventory (Detail) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Inventory Disclosure [Abstract]    
Raw materials $ 23,300,000 $ 19,600,000
Work in process 1,700,000 1,900,000
Finished goods 306,500,000 317,900,000
Total $ 331,529,000 $ 339,411,000