Quarterly report pursuant to Section 13 or 15(d)

Stock Options and Warrants - Additional Information (Detail)

v3.10.0.1
Stock Options and Warrants - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Apr. 08, 2019
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2018
Nov. 30, 2017
May 31, 2018
Jun. 15, 2018
Aug. 24, 2017
Mar. 31, 2016
Feb. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Common Stock issued   290,808,960   290,808,960   216,881,790        
Inducement interest related to warrant extensions         $ 826,252 $ 800,000        
Compensation expense       $ 1,510,486 529,617          
Placement Agent                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares             133,600      
Term of warrants             5 years      
Exercise price of warrants, per share             $ 0.55      
Consultant                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares   300,000   300,000            
Term of warrants   5 years   5 years            
Exercise price of warrants, per share   $ 0.56   $ 0.56            
Warrants grant date fair value   $ 0.30   $ 0.30            
Investor                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of warrants, per share           $ 0.50        
Common Stock issued           3,295,000        
Proceeds from Issuance of Common Stock           $ 1,600,000        
Before Inducement | Investor                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of warrants, per share           $ 1.00        
Class of warrant or right expiration date           Jun. 30, 2017        
Private Equity Offering                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares   22,478,585   22,478,585            
Term of warrants   5 years   5 years            
Exercise price of warrants, per share   $ 0.75   $ 0.75            
Proceeds from Issuance of Common Stock       $ 19,900,000            
Private Equity Offering | Placement Agent                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares   4,245,117   4,245,117            
Term of warrants   5 years   5 years            
Exercise price of warrants, per share   $ 0.50   $ 0.50            
Subscription Agreements                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares             1,970,000      
Term of warrants             5 years      
Exercise price of warrants, per share             $ 0.75      
2012 Equity Incentive Plan                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Compensation expense   $ 1,200,000 $ 1,500,000 $ 275,000 530,000          
Grant date fair value of options and warrants   485,000 $ 1,200,000 127,000 $ 574,000          
Unrecognized compensation expense   $ 5,700,000   $ 5,700,000            
Weighted average period over which unrecognized compensation expense is expected to be recognized       2 years 8 months 8 days            
2012 Equity Incentive Plan | Employee Stock Option One | Managing Director                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period       1 year            
Stock options, term       10 years            
2012 Equity Incentive Plan | Employee Stock Option One | Managing Director | Range One                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       680,822            
Stock option granted, exerices price       $ 0.49            
2012 Equity Incentive Plan | Employee Stock Option One | Managing Director | Range Two                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       80,822            
Stock option granted, exerices price       $ 0.47            
2012 Equity Incentive Plan | Employee Stock Option One | Non Employee Directors [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       80,822            
Stock option granted, exerices price       $ 0.30            
Stock options grant date fair value       $ 0.31            
2012 Equity Incentive Plan | Employee Stock Option One | Non Employee Directors [Member] | Minimum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Annual increase stock option granted, shares       75,000            
2012 Equity Incentive Plan | Employee Stock Option One | Non Employee Directors [Member] | Maximum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Annual increase stock option granted, shares       100,000            
2012 Equity Incentive Plan | Stock Options                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Shares available for future stock-based grants   553,048   553,048            
2012 Equity Incentive Plan | Stock Options | Before Amendment                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Shares available for future issuance               7,000,000 5,000,000 3,000,000
2012 Equity Incentive Plan | Stock Options | After Amendment                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Shares available for future issuance               15,000,000 7,000,000 5,000,000
2012 Equity Incentive Plan | Stock Options | Managing Director                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       500,000            
Stock option granted, exerices price       $ 0.565            
Stock options, term       10 years            
Stock options grant date fair value       $ 0.30            
2012 Equity Incentive Plan | Stock Options | Executive Management and Employees                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       875,000            
Vesting period       3 years            
Stock options, term       10 years            
Stock options grant date fair value       $ 0.31            
Stock options granted, exercise price, lower range limit       $ 0.49            
2012 Equity Incentive Plan | Stock Options | Executive Chairman                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       950,000            
Stock option granted, exerices price       $ 0.49            
Vesting period       24 months            
Stock options, term       10 years            
Stock options grant date fair value       $ 0.41            
2012 Equity Incentive Plan | Stock Options | Officer                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       1,000,000            
Stock option granted, exerices price       $ 0.565            
Stock options, term       10 years            
Stock options grant date fair value       $ 0.30            
Stock option award vesting percentage       50.00%            
2012 Equity Incentive Plan | Stock Options | Officer | Scenario, Forecast                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option award vesting percentage 50.00%                  
2012 Equity Incentive Plan | Stock Options | Chief Medical Officer                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock option granted, Shares       350,000            
Stock option granted, exerices price       $ 0.551            
Vesting period       3 years            
Stock options, term       10 years            
Stock options grant date fair value       $ 0.30