Quarterly report pursuant to Section 13 or 15(d)

Stockholders??? Equity (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

v3.20.2
Stockholders’ Equity (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range - $ / shares
 3 Months Ended 12 Months Ended
May 31, 2019
Aug. 31, 2020
May 31, 2020
Jul. 19, 2019
Jul. 08, 2019
May 30, 2019
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]            
Exercise Price       $ 1.10 $ 1.10  
Number of warrants outstanding (in Shares)   54,835,145 54,838,145     54,835,145
Weighted average remaining contractual life   1 year 3 months        
Weighted average exercise price of outstanding warrants $ 0.53 $ 0.53 $ 0.53      
Number of warrants exercisable (in Shares)   54,835,145        
Weighted average exercise price of exercisable warrants   $ 0.53        
Warrant Exercisable at $0.49 [Member]            
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]            
Exercise Price   $ 0.49        
Number of warrants outstanding (in Shares)   33,465,110        
Weighted average remaining contractual life   1 year 3 months        
Weighted average exercise price of outstanding warrants   $ 0.49        
Number of warrants exercisable (in Shares)   33,465,110        
Weighted average exercise price of exercisable warrants   $ 0.49        
Warrants Exercisable at $0.50 [Member]            
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]            
Exercise Price   $ 0.50        
Number of warrants outstanding (in Shares)   2,736,500        
Weighted average remaining contractual life   1 year 175 days        
Weighted average exercise price of outstanding warrants   $ 0.50        
Number of warrants exercisable (in Shares)   2,736,500        
Weighted average exercise price of exercisable warrants   $ 0.50        
Warrant Exercisable at $0.60 [Member]            
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]            
Exercise Price   $ 0.60        
Number of warrants outstanding (in Shares)   17,500,000        
Weighted average remaining contractual life   1 year 3 months        
Weighted average exercise price of outstanding warrants   $ 0.60        
Number of warrants exercisable (in Shares)   17,500,000        
Weighted average exercise price of exercisable warrants   $ 0.60        
Warrant Exercisable at $0.75 [Member]            
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]            
Exercise Price   $ 0.75        
Number of warrants outstanding (in Shares)   837,500        
Weighted average remaining contractual life   171 days        
Weighted average exercise price of outstanding warrants   $ 0.75        
Number of warrants exercisable (in Shares)   837,500        
Weighted average exercise price of exercisable warrants   $ 0.75        
Warrant Exercisable at $1.10 [Member]            
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]            
Exercise Price   $ 1.10        
Number of warrants outstanding (in Shares)   296,035        
Weighted average remaining contractual life   1 year 113 days        
Weighted average exercise price of outstanding warrants   $ 1.10        
Number of warrants exercisable (in Shares)   296,035        
Weighted average exercise price of exercisable warrants   $ 1.10