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Proxy Contests - Additional Information (Detail) (USD $) | 1 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2013 | Jun. 14, 2013 | Oct. 25, 2011 | Aug. 31, 2013 Participant | Aug. 31, 2012 | Nov. 30, 2012 | May 30, 2012 Directors | Aug. 25, 2011 | May 09, 2011 Directors
Compensation Related Costs [Abstract] |  |  |  |  |  |  |  |  |
Number of directors nominated |  |  |  |  |  |  | 6 |  | 5
Cash transferred to trust |  |  |  |  |  |  |  | $ 2,500,000 |
Legal fees paid |  |  |  | 68,843 | 59,232 |  |  |  |
Balance in the trust |  |  |  | 1,216,931 |  | 2,372,439 |  |  |
Total number of participants |  |  |  | 3 |  |  |  |  |
Claim amount of employment agreement and defamation |  |  | 5,000,000 |  |  |  |  |  |
Claim amount covered under insurance |  |  | 1,000,000 |  |  |  |  |  |
Claim settlement amount |  | 1,080,938 |  |  |  |  |  |  |
Claim settlement amount related to lost salary, bonuses, benefits |  | 980,938 |  |  |  |  |  |  |
Claim settlement amount related to defamation |  | 100,000 |  |  |  |  |  |  |
Accrued expense related to lost salary, bonuses and benefits |  |  |  | 487,000 |  | 1,450,000 |  |  |
Initial payment related to lost salary, bonuses and benefits | 1,066,174 |  |  |  |  |  |  |  |
Stock option compensation expense |  |  |  |  | $ 700,000 |  |  |  |

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