Warrants (Details 1)	3 Months Ended
	Oct. 31, 2019 $ / shares shares
Warrants and Rights Note Disclosure [Abstract]
Warrants, Outstanding | shares	2,700,000
Warrants, Granted | shares
Warrants, Exercised | shares
Warrants, Forfeited and cancelled | shares
Warrants, Outstanding | shares	2,700,000
Warrants, Exercisable | shares	2,400,000
Weighted-average exercise price, Outstanding | $ / shares	$ 0.32
Weighted-average exercise price, Granted | $ / shares
Weighted-average exercise price, Exercised | $ / shares
Weighted-average exercise price, Forfeited and cancelled | $ / shares
Weighted-average exercise price, Outstanding | $ / shares	0.32
Weighted-average exercise price, Exercisable | $ / shares	$ 0.24
Weighted-average remaining contractual term (years), Outstanding	2 years 2 months 8 days
Weighted-average remaining contractual term (years), Granted
Weighted-average remaining contractual term (years), Exercised
Weighted-average remaining contractual term (years), Forfeited and cancelled
Weighted-average remaining contractual term (years), Outstanding	1 year 11 months 4 days
Weighted-average remaining contractual term (years), Exercisable	1 year 9 months 29 days