Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Shares Granted by Exercise Price Range (Details)

v3.8.0.1
Stock-Based Compensation - Shares Granted by Exercise Price Range (Details)
 12 Months Ended
Nov. 30, 2017
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Number of Options Granted (shares) 871,500
Number of Option Shares Vested (shares) 421,800
$3.03  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.03
Number of Options Granted (shares) 14,000
Weighted-Average Remaining Term (years) 3 years 10 months 6 days
Number of Option Shares Vested (shares) 2,800
$3.16  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.16
Number of Options Granted (shares) 300,000
Weighted-Average Remaining Term (years) 3 years
Number of Option Shares Vested (shares) 300,000
$3.18  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.18
Number of Options Granted (shares) 10,000
Weighted-Average Remaining Term (years) 7 years 4 months 9 days
Number of Option Shares Vested (shares) 4,000
$3.30  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.30
Number of Options Granted (shares) 232,500
Weighted-Average Remaining Term (years) 9 years 6 months 21 days
Number of Option Shares Vested (shares) 0
$3.30  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.30
Number of Options Granted (shares) 75,000
Weighted-Average Remaining Term (years) 3 years 6 months 21 days
Number of Option Shares Vested (shares) 75,000
$3.30  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.30
Number of Options Granted (shares) 75,000
Weighted-Average Remaining Term (years) 4 years 10 months 2 days
Number of Option Shares Vested (shares) 0
$3.35  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.35
Number of Options Granted (shares) 130,000
Weighted-Average Remaining Term (years) 8 years 6 months 21 days
Number of Option Shares Vested (shares) 26,000
$3.48  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price (usd per share) | $ / shares $ 3.48
Number of Options Granted (shares) 35,000
Weighted-Average Remaining Term (years) 7 years 1 month 6 days
Number of Option Shares Vested (shares) 14,000