Significant Accounting Policies (Details) - Reconciliation of the numerators and denominators of the basic and diluted earnings per share computations - USD ($)	3 Months Ended		9 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Numerator:
Net loss (in Dollars)	$ (860,926)	$ (678,746)	$ (1,852,482)	$ (1,607,730)
Denominator for basic loss per common share	9,814,504	9,322,549	9,882,459	9,103,225
Effect of dilutive securities:
Options and warrants
Denominator for diluted loss per common share	9,814,504	9,322,549	9,882,459	9,103,225
Basic net loss per common share (in Dollars per share)	$ (0.09)	$ (0.07)	$ (0.19)	$ (0.18)
Diluted net loss per common share (in Dollars per share)	$ (0.09)	$ (0.07)	$ (0.19)	$ (0.18)