Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.19.1
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
3 Months Ended 12 Months Ended
Feb. 28, 2019
Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted 0  
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 0  
Exercised (2,500)  
Expired/forfeited (5,000)  
Outstanding at February 28, 2019 993,865 1,001,365
Exercisable at February 28, 2019 970,821  
Outstanding at November 30, 2018, Weighted Average Exercise Price $ 2.77  
Granted, Weighted Average Exercise Price 0  
Exercised, Weighted Average Exercise Price 2.28  
Expired/forfeited, Weighted Average Exercise Price 2.23  
Outstanding at February 28, 2019, Weighted Average Exercise Price 2.78 $ 2.77
Exercisable at February 28, 2019, Weighted Average Exercise Price $ 2.68  
Outstanding, Weighted Average Remaining Contractual Term (Years) 3 years 9 months 3 years 11 months 19 days
Exercisable at February 28, 2019, Weighted Average Remaining Contractual Term (Years) 3 years 8 months 23 days  
Outstanding at November 30, 2018 $ 4,580,967  
Granted 0  
Exercised 14,175  
Expired/forfeited 21,625  
Outstanding at February 28, 2019 3,827,501 $ 4,580,967
Exercisable at February 28, 2019 $ 3,813,041