Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Stock Option Activity for Options (Detail)

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Stockholders' Equity - Stock Option Activity for Options (Detail) (USD $)
 12 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding at November 30, 2013, Options 1,752,260 1,823,098
Service-Based Vesting Condition Options [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding at November 30, 2012, Options 1,183,098  
Granted, Options 36,000  
Exercised, Options (10,000)  
Expired/forfeited, Options (96,838)  
Outstanding at November 30, 2013, Options 1,112,260 1,183,098
Exercisable at November 30, 2013, Options 1,003,108  
Outstanding at November 30, 2012, Weighted Average Exercise Price $ 2.15  
Granted, Weighted Average Exercise Price $ 2.00  
Exercised, Weighted Average Exercise Price $ 1.50  
Expired/forfeited, Weighted Average Exercise Price $ 2.63  
Outstanding at November 30, 2013, Weighted Average Exercise Price $ 2.11 $ 2.15
Exercisable at November 30, 2013, Weighted Average Exercise Price $ 2.09  
Outstanding at November 30, 2012, Weighted Average Remaining Contractual Life (Years) 6 years 4 months 24 days 7 years 1 month 13 days
Exercisable at November 30, 2013, Weighted Average Remaining Contractual Life (Years) 6 years 6 months 4 days  
Outstanding at November 30, 2012, Aggregate Intrinsic Value $ 580,730  
Granted, Aggregate Intrinsic Value     
Exercised, Aggregate Intrinsic Value 5,575  
Expired/forfeited, Aggregate Intrinsic Value 7,650  
Outstanding at November 30, 2013, Aggregate Intrinsic Value 88,614 580,730
Exercisable at November 30, 2013, Aggregate Intrinsic Value 88,531  
Performance and Market-Based Vesting Condition Options [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding at November 30, 2012, Options 640,000  
Granted, Options     
Exercised, Options     
Expired/forfeited, Options     
Outstanding at November 30, 2013, Options 640,000 640,000
Exercisable at November 30, 2013, Options     
Outstanding at November 30, 2012, Weighted Average Exercise Price $ 1.74  
Granted, Weighted Average Exercise Price     
Exercised, Weighted Average Exercise Price     
Expired/forfeited, Weighted Average Exercise Price     
Outstanding at November 30, 2013, Weighted Average Exercise Price $ 1.74 $ 1.74
Exercisable at November 30, 2013, Weighted Average Exercise Price     
Outstanding at November 30, 2012, Weighted Average Remaining Contractual Life (Years) 7 years 9 months 29 days 8 years 9 months 29 days
Exercisable at November 30, 2013, Weighted Average Remaining Contractual Life (Years)     
Outstanding at November 30, 2012, Aggregate Intrinsic Value 511,600  
Outstanding at November 30, 2013, Aggregate Intrinsic Value 70,000 511,600
Exercisable at November 30, 2013, Aggregate Intrinsic Value