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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw Materials $ 54,739 $ 56,104
Work-in-process 902 328
Inventories:    
Finished goods 190,556 207,060
Inventories $ 246,197 $ 263,492