Annual report pursuant to Section 13 and 15(d)

Inventories - Schedule of Components of Inventory (Detail)

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Inventories - Schedule of Components of Inventory (Detail) (USD $)
Nov. 30, 2012
Nov. 30, 2011
Inventory Disclosure [Line Items]    
Raw materials $ 6,639,048 $ 6,272,251
Finished goods 3,155,400 3,188,157
Total $ 9,794,448 $ 9,460,408