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Subsequent Events (Details) - USD ($)
6 Months Ended
Dec. 01, 2017
Nov. 30, 2017
Nov. 30, 2016
Subsequent Events (Details) [Line Items]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit   $ 0.71  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit   $ 1.04  
Proceeds from Stock Options Exercised (in Dollars)   $ 13,789 $ 56,556
Subsequent Event [Member]      
Subsequent Events (Details) [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares) 5,750    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit $ 0.85    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit $ 1.04    
Proceeds from Stock Options Exercised (in Dollars) $ 5,125    
Sale of Stock, Aggregate Amount (in Dollars) $ 7,000,000    
Entity Listing, Par Value Per Share $ 0.08    
Agent Commission Percentage 3.00%