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

v3.22.1
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
Feb. 28, 2022
May 31, 2021
Jan. 04, 2022
Jul. 17, 2021
Mar. 31, 2021
May 30, 2020
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]              
Exercise Price   $ 0.4125   $ 0.4125 $ 0.4 $ 1.1  
Number of warrants outstanding (in Shares)   7,346,297 53,997,645       54,835,145
Weighted average remaining contractual life   4 months 28 days          
Weighted average exercise price of outstanding warrants $ 0.53 $ 0.5 $ 0.5        
Number of warrants exercisable (in Shares)   7,346,297          
Weighted average exercise price of exercisable warrants   $ 0.5          
Warrants Exercisable at $0.41 [Member]              
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]              
Exercise Price   $ 0.41          
Number of warrants outstanding (in Shares)   3,514,797          
Weighted average remaining contractual life   2 months 15 days          
Weighted average exercise price of outstanding warrants   $ 0.41          
Number of warrants exercisable (in Shares)   3,514,797          
Weighted average exercise price of exercisable warrants   $ 0.41          
Warrants Exercisable at $0.50 [Member]              
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]              
Exercise Price   $ 0.5          
Number of warrants outstanding (in Shares)   706,500          
Weighted average remaining contractual life   14 days          
Weighted average exercise price of outstanding warrants   $ 0.5          
Number of warrants exercisable (in Shares)   706,500          
Weighted average exercise price of exercisable warrants   $ 0.5          
Warrant Exercisable at $0.60 [Member]              
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]              
Exercise Price   $ 0.6          
Number of warrants outstanding (in Shares)   3,125,000          
Weighted average remaining contractual life   8 months 19 days          
Weighted average exercise price of outstanding warrants   $ 0.6          
Number of warrants exercisable (in Shares)   3,125,000          
Weighted average exercise price of exercisable warrants   $ 0.6