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Investments in Affiliates - Additional Information (Detail) (USD $) | 12 Months Ended
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Nov. 30, 2013 Installment | Nov. 30, 2012
Investments In Affiliates [Line Items] |  |
Value of treasury stock | $ 2,926,123 | $ 2,187,505
Saneron [Member] |  |
Investments In Affiliates [Line Items] |  |
Goodwill | 684,000 | 684,000
Goodwill Impairment | 0 | 0
Equity in losses of Saneron operations | 154,000 | 155,000
Value of treasury stock | 485,000 | 485,000
Loan Saneron in quarterly payments an aggregate amount | 300,000 |
Initial loan amount | 150,000 |
Additional quarterly payments | 4 |
Quarterly installments per quarter | 37,500 |
Date of maturity | 5 years |
First initial quarterly payment | 37,500 |
Saneron [Member] | Additional Loan [Member] |  |
Investments In Affiliates [Line Items] |  |
Initial loan amount | 150,000 |
Additional quarterly payments | 4 |
Quarterly installments per quarter | $ 37,500 |

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