Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Schedule of Intangible Assets (Detail)

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Intangible Assets - Schedule of Intangible Assets (Detail) (USD $)
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2010
Finite-Lived Intangible Assets [Line Items]      
Trademarks and patents $ 932,896 $ 822,896  
Less: Accumulated amortization 150,241 149,779 11,368
Intangible Assets - Net $ 782,655 $ 673,117