Quarterly report pursuant to Section 13 or 15(d)

Investment in Saneron CCEL Therapeutics, Inc. (''Saneron'') - Additional Information (Detail)

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Investment in Saneron CCEL Therapeutics, Inc. (''Saneron'') - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
May 31, 2013
May 31, 2012
May 31, 2013
May 31, 2012
Nov. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Value of treasury stock $ 2,855,471   $ 2,855,471   $ 2,187,505
Saneron [Member]
         
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Ownership interest 34.00%   34.00%   34.00%
Goodwill 684,000   684,000   684,000
Goodwill Impairment     0   0
Equity in losses of Saneron operations 38,000 39,000 77,000 78,000  
Value of treasury stock $ 485,000   $ 485,000   $ 485,000