Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.20.2
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Nov. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted 110,965 51,969 112,465  
Service-Based Vesting Condition Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding at November 30, 2019   1,089,774    
Granted   51,969    
Exercised   (20,000)    
Outstanding at August 31, 2020   1,121,743   1,089,774
Exercisable at August 31, 2020   1,047,166    
Outstanding at November 30, 2019, Weighted Average Exercise Price   $ 3.30    
Granted, Weighted Average Exercise Price   7.51    
Exercised, Weighted Average Exercise Price   2.05    
Outstanding at August 31, 2020, Weighted Average Exercise Price   3.52   $ 3.30
Exercisable at August 31, 2020, Weighted Average Exercise Price   $ 3.23    
Outstanding, Weighted Average Remaining Contractual Term (Years)   3 years 5 months 19 days   3 years 10 months 28 days
Exercisable at August 31, 2020, Weighted Average Remaining Contractual Term (Years)   3 years 29 days    
Outstanding at November 30, 2019, Aggregate Intrinsic Value   $ 4,648,111    
Granted, Aggregate Intrinsic Value   49,989    
Exercised, Aggregate Intrinsic Value   102,800    
Outstanding at August 31, 2020, Aggregate Intrinsic Value   5,444,134   $ 4,648,111
Exercisable at August 31, 2020, Aggregate Intrinsic Value   $ 5,380,026