Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.7.0.1
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
May 31, 2017
May 31, 2016
May 31, 2017
May 31, 2016
Nov. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted 0 169,729 0 169,729  
Service-Based Vesting Condition Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Outstanding at November 30, 2016     1,142,010    
Granted     0    
Exercised     (26,781)    
Expired/forfeited     (5,000)    
Outstanding at May 31, 2017 1,110,229   1,110,229   1,142,010
Exercisable at May 31, 2017 1,037,405   1,037,405    
Outstanding at November 30, 2016, Weighted Average Exercise Price     $ 2.36    
Granted, Weighted Average Exercise Price     0    
Exercised, Weighted Average Exercise Price     1.92    
Expired/forfeited, Weighted Average Exercise Price     1.36    
Outstanding at May 31, 2017, Weighted Average Exercise Price $ 2.38   2.38   $ 2.36
Exercisable at May 31, 2017, Weighted Average Exercise Price $ 2.32   $ 2.32    
Outstanding at May 31, 2017, Weighted Average Remaining Contractual Life (Years)     4 years 7 months 6 days   4 years 11 months 26 days
Exercisable at May 31, 2017, Weighted Average Remaining Contractual Life (Years)     4 years 4 months 6 days    
Outstanding at November 30, 2016     $ 2,157,112    
Granted     0    
Exercised     78,149    
Expired/forfeited     21,275    
Outstanding at May 31, 2017 $ 3,590,126   3,590,126   $ 2,157,112
Exercisable at May 31, 2017 $ 3,411,901   $ 3,411,901