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Investment in Saneron CCEL Therapeutics, Inc. (''Saneron'') - Additional Information (Detail) (USD $)
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3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||||||
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May 31, 2014
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Nov. 30, 2013
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May 31, 2014
Saneron [Member]
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May 31, 2014
Saneron [Member]
Installment
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Nov. 30, 2013
Saneron [Member]
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May 31, 2014
Saneron [Member]
Common Stock and Warrant Awards [Member]
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May 31, 2013
Saneron [Member]
Common Stock and Warrant Awards [Member]
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May 31, 2014
Saneron [Member]
Common Stock and Warrant Awards [Member]
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May 31, 2013
Saneron [Member]
Common Stock and Warrant Awards [Member]
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May 31, 2014
Saneron [Member]
Valuation Allowance Investment [Member]
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May 31, 2014
Saneron [Member]
Valuation Allowance Investment [Member]
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May 31, 2014
Saneron [Member]
Initial Loan [Member]
Installment
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May 31, 2014
Saneron [Member]
Additional Loan [Member]
Installment
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| Investments In Affiliates [Line Items] | |||||||||||||
| Ownership interest | 34.00% | 34.00% | |||||||||||
| Equity method investment | $ 684,000 | $ 684,000 | $ 684,000 | $ 684,000 | $ 684,000 | ||||||||
| Equity method investment, other than temporary impairment loss | 0 | 0 | |||||||||||
| Goodwill impairment loss | 0 | 0 | |||||||||||
| Loan Saneron in quarterly payments an aggregate amount | 300,000 | 300,000 | |||||||||||
| Initial loan amount | 150,000 | 150,000 | |||||||||||
| Additional quarterly payments | 3 | 4 | 4 | ||||||||||
| Quarterly installments per quarter | 37,500 | 37,500 | |||||||||||
| Date of maturity | 5 years | ||||||||||||
| Quarterly installments per quarter | 37,500 | ||||||||||||
| Equity in losses | 76,076 | 189,651 | 38,576 | 38,450 | 77,151 | 76,900 | |||||||
| Valuation allowances on investment | 37,500 | 112,500 | |||||||||||
| Value of treasury stock | $ 4,333,401 | $ 2,926,123 | $ 485,000 | $ 485,000 | $ 485,000 | ||||||||