Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Stockholders' Equity (Details) - Schedule of Warrants or Rights, Shares Authorized, by Exercise Price Range

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Note 12 - Stockholders' Equity (Details) - Schedule of Warrants or Rights, Shares Authorized, by Exercise Price Range - $ / shares
 9 Months Ended 12 Months Ended
Feb. 28, 2018
May 31, 2017
Note 12 - Stockholders' Equity (Details) - Schedule of Warrants or Rights, Shares Authorized, by Exercise Price Range [Line Items]    
Number of warrants outstanding (in Shares) 1,480,000 0
Weighted average remaining contractual life 2 years 361 days  
Weighted average exercise price of outstanding warrants $ 0.75 $ 0
Number of warrants exerciable (in Shares) 1,480,000  
Weighted average exercise price of exerciable warrants $ 0.75  
Warrants Exerciable at $0.75 [Member]    
Note 12 - Stockholders' Equity (Details) - Schedule of Warrants or Rights, Shares Authorized, by Exercise Price Range [Line Items]    
Exercise Price $ 0.75  
Number of warrants outstanding (in Shares) 1,480,000  
Weighted average remaining contractual life 2 years 361 days  
Weighted average exercise price of outstanding warrants $ 0.75  
Number of warrants exerciable (in Shares) 1,480,000  
Weighted average exercise price of exerciable warrants $ 0.75