Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.8.0.1
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Nov. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 0 0  
Service-Based Vesting Condition Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding at November 30, 2017 1,026,979    
Granted 0    
Exercised (1,250)    
Expired/forfeited (6,000)    
Outstanding at February 28, 2018 1,019,729   1,026,979
Exercisable at February 28, 2018 999,518    
Outstanding at November 30, 2017, Weighted Average Exercise Price $ 2.50    
Granted, Weighted Average Exercise Price 0    
Exercised, Weighted Average Exercise Price 1.80    
Expired/forfeited, Weighted Average Exercise Price 2.12    
Outstanding at February 28, 2018, Weighted Average Exercise Price 2.51   $ 2.50
Exercisable at February 28, 2018, Weighted Average Exercise Price $ 2.45    
Outstanding at February 28, 2018, Weighted Average Remaining Contractual Life (Years) 4 years 4 months 17 days   4 years 5 months 23 days
Exercisable at February 28, 2018, Weighted Average Remaining Contractual Life (Years) 4 years 3 months 26 days    
Outstanding at November 30, 2017 $ 5,706,107    
Granted 0    
Exercised 7,963    
Expired/forfeited 30,240    
Outstanding at February 28, 2018 4,744,886   $ 5,706,107
Exercisable at February 28, 2018 $ 4,707,903