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

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Stockholders' Equity (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range - $ / shares
 6 Months Ended 12 Months Ended
May 31, 2018
Nov. 30, 2019
May 31, 2019
Jul. 19, 2019
Jul. 08, 2019
Nov. 30, 2018
Nov. 14, 2018
Sep. 06, 2018
Aug. 14, 2018
Aug. 08, 2018
Aug. 06, 2018
Jul. 20, 2018
Jun. 27, 2018
May 30, 2018
Feb. 28, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]                              
Exercise Price       $ 1.10 $ 1.10 $ 0.65 $ 0.75 $ 0.75 $ 0.75 $ 0.60 $ 0.60 $ 0.60 $ 0.50   $ 0.75
Number of warrants outstanding (in Shares)   54,837,145 54,820,985                     4,497,750  
Weighted average remaining contractual life   2 years                          
Weighted average exercise price of outstanding warrants $ 0.61 $ 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   2 years                          
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   2 years 83 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   2 years                          
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   1 year 83 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   2 years                          
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