Stock-Based Compensation (Details Textual) - USD ($)	1 Months Ended	9 Months Ended		12 Months Ended
	Nov. 30, 2015	Apr. 30, 2019	Apr. 30, 2018	Jul. 31, 2018
Management [Member]
Stock-Based Compensation (Textual)
Options to purchase common shares		1,725,000
Exercise price, per share		$ 0.19
Options vesting term		5 years
Options vest, description		The options vest equally over a period of one year.
Options fair market value		$ 217,263
Board of Directors [Member]
Stock-Based Compensation (Textual)
Options to purchase common shares		100,000
Exercise price, per share		$ 0.18
Options vesting term		5 years
Options vest, description		The options vest equally over a period of one year.
Options fair market value		$ 11,406
Employee Stock Option [Member]
Stock-Based Compensation (Textual)
Stock options authorizes to grant	7,500,000
Aggregate intrinsic outstanding, shares		5,240,000		3,415,000
Aggregate intrinsic outstanding, value		$ 55,750		$ 706,372
Aggregate intrinsic exercisable, shares		3,156,341		2,006,111
Aggregate intrinsic exercisable, value		$ 12,156		$ 587,389
Employees [Member]
Stock-Based Compensation (Textual)
Common stock, shares issued		635,155
Stock-based compensation expense to employees		$ 115,000
Unamortized compensation cost		388,732	$ 338,000
Stock-based compensation expense		$ 403,000	$ 585,000