Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Fair Value of Options Granted (Detail)

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Stockholders' Equity - Fair Value of Options Granted (Detail) - Service-Based Vesting Condition Options [Member]
3 Months Ended 9 Months Ended
Aug. 31, 2015
Aug. 31, 2015
Weighted average values:    
Expected dividends 0.00% 0.00%
Expected volatility 75.50% 75.50%
Risk free interest rate 1.57% 1.57%
Expected life 5 years 5 years