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 12 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Nov. 30, 2016
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, 2016 1,142,010    
Granted 0    
Exercised (19,281)    
Expired/forfeited (2,500)    
Outstanding at February 28, 2017 1,120,229   1,142,010
Exercisable at February 28, 2017 1,041,780    
Outstanding at November 30, 2016, Weighted Average Exercise Price $ 2.36    
Granted, Weighted Average Exercise Price 0    
Exercised, Weighted Average Exercise Price 1.74    
Expired/forfeited, Weighted Average Exercise Price 1.50    
Outstanding at February 28, 2017, Weighted Average Exercise Price 2.37   $ 2.36
Exercisable at February 28, 2017, Weighted Average Exercise Price $ 2.31    
Outstanding at February 28, 2017 Weighted Average Remaining Contractual Life (Years) 4 years 9 months 26 days   4 years 11 months 27 days
Exercisable at February 28, 2017 Weighted Average Remaining Contractual Life (Years) 4 years 6 months 22 days    
Outstanding at November 30, 2016 $ 1,095,525    
Granted 0    
Exercised 57,949    
Expired/forfeited 7,150    
Outstanding at February 28, 2017 2,225,014   $ 1,095,525
Exercisable at February 28, 2017 $ 2,132,983