General form of registration statement for all companies including face-amount certificate companies

STOCKHOLDERS' EQUITY (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

v3.22.1
STOCKHOLDERS' EQUITY (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range - $ / shares
 9 Months Ended 12 Months Ended
May 31, 2020
May 31, 2019
Feb. 28, 2022
May 31, 2021
May 31, 2020
Jun. 17, 2021
Apr. 15, 2021
Mar. 31, 2021
May 30, 2020
Jul. 19, 2019
Jul. 08, 2019
May 30, 2019
Jun. 20, 2018
Mar. 31, 2018
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]                            
Exercise Price     $ 0.4125     $ 0.4 $ 0.4 $ 1.1   $ 1.1 $ 1.1   $ 0.45 $ 1.25
Number of warrants outstanding (in Shares) 54,835,145   7,346,297 53,997,645 54,835,145       54,835,145     54,818,985    
Weighted average remaining contractual life     4 months 28 days 6 months 3 days                    
Weighted average exercise price of outstanding warrants $ 0.53 $ 0.53 $ 0.5 $ 0.53 $ 0.53                  
Number of warrants exercisable (in Shares)     7,346,297 53,997,645                    
Weighted average exercise price of exercisable warrants     $ 0.5 $ 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 6 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     $ 0.5 $ 0.5                    
Number of warrants outstanding (in Shares)     706,500 2,736,500                    
Weighted average remaining contractual life     14 days 1 year 8 months 23 days                    
Weighted average exercise price of outstanding warrants     $ 0.5 $ 0.5                    
Number of warrants exercisable (in Shares)     706,500 2,736,500                    
Weighted average exercise price of exercisable warrants     $ 0.5 $ 0.5                    
Warrant Exercisable at $0.60 [Member]                            
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]                            
Exercise Price     $ 0.6 $ 0.6                    
Number of warrants outstanding (in Shares)     3,125,000 17,500,000                    
Weighted average remaining contractual life     8 months 19 days 1 year 6 months                    
Weighted average exercise price of outstanding warrants     $ 0.6 $ 0.6                    
Number of warrants exercisable (in Shares)     3,125,000 17,500,000                    
Weighted average exercise price of exercisable warrants     $ 0.6 $ 0.6                    
Warrant Exercisable at $1.10 [Member]                            
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]                            
Exercise Price       $ 1.1                    
Number of warrants outstanding (in Shares)       296,035                    
Weighted average remaining contractual life       1 year 6 months 21 days                    
Weighted average exercise price of outstanding warrants       $ 1.1                    
Number of warrants exercisable (in Shares)       296,035                    
Weighted average exercise price of exercisable warrants       $ 1.1