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Inventories - Components of Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2014
Feb. 28, 2013
Inventory Disclosure [Abstract]    
Raw material $ 16,400 $ 14,470
Work-in-process 14,386 11,238
Finished goods 99,309 83,990
Inventories $ 130,095 $ 109,698