Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.19.3
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2019
Aug. 31, 2018
Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted     112,465    
Service-Based Vesting Condition Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Outstanding at November 30, 2018     1,001,365    
Granted 110,965 0 112,465 51,636  
Exercised     (2,500)    
Expired/forfeited     (7,500)    
Outstanding at August 31, 2019 1,103,830   1,103,830   1,001,365
Exercisable at August 31, 2019 1,004,312   1,004,312    
Outstanding at November 30, 2018, Weighted Average Exercise Price     $ 2.77    
Granted, Weighted Average Exercise Price     7.52    
Exercised, Weighted Average Exercise Price     2.28    
Expired/forfeited, Weighted Average Exercise Price     2.22    
Outstanding at August 31, 2019, Weighted Average Exercise Price $ 3.26   3.26   $ 2.77
Exercisable at August 31, 2019, Weighted Average Exercise Price $ 2.83   $ 2.83    
Outstanding, Weighted Average Remaining Contractual Term (Years)     4 years 2 months 8 days   3 years 11 months 19 days
Exercisable at August 31, 2019, Weighted Average Remaining Contractual Term (Years)     3 years 8 months 19 days    
Outstanding at November 30, 2018     $ 4,580,967    
Granted     735    
Exercised     14,175    
Expired/forfeited     39,800    
Outstanding at August 31, 2019 $ 4,728,540   4,728,540   $ 4,580,967
Exercisable at August 31, 2019 $ 4,727,576   $ 4,727,576