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Significant Accounting Policies (Details) - Reconciliation of the numerators and denominators of the basic and diluted earnings per share - USD ($)
3 Months Ended 9 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Feb. 28, 2018
Feb. 28, 2017
Numerator:        
Net loss (in Dollars) $ (322,491) $ (304,141) $ (798,211) $ (562,741)
Denominator for basic loss per common share 8,556,480 8,433,932 8,529,009 8,269,791
Effect of dilutive securities:        
Options and warrants
Denominator for diluted loss per common share 8,556,480 8,433,932 8,529,009 8,269,791
Basic net loss per common share (in Dollars per share) $ (0.04) $ (0.04) $ (0.09) $ (0.07)
Diluted net loss per common share (in Dollars per share) $ (0.04) $ (0.04) $ (0.09) $ (0.07)