CAPITAL STOCK (Details 6) - $ / shares	3 Months Ended				9 Months Ended
	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2017
Share Based Compensation Stock Options Activity [Line Items]
Number of Stock Options, Issued					622,500
Employee Stock Option [Member]
Share Based Compensation Stock Options Activity [Line Items]
Number of Stock Options, Begining Balance	12,253,000	12,287,634	12,105,858		12,105,858
Number of Stock Options, Issued	100,000	150,000	372,500
Number of Stock Options, Exercised	(47,500)	(144,634)	(180,000)
Number of Stock Options, Expired	(50,000)	(40,000)	(10,724)
Number of Stock Options, Ending Balance	12,255,500	12,253,000	12,287,634	12,105,858	12,255,500
Weighted Average Exercise Price, Begining Balance	$ 1.35	$ 1.34	$ 1.34		$ 1.34
Weighted Average Exercise Price, Issued	1.34	1.07	1.03
Weighted Average Exercise Price, Exercised	0.93	0.47	0.45
Weighted Average Exercise Price, Expired	5.70	2.46	5.13
Weighted Average Exercise Price, Ending Balance	$ 1.33	$ 1.35	$ 1.34	$ 1.34	$ 1.33
Weighted Average Remaining Contractual Term	2 years 9 months 18 days	3 years 7 days	3 years 2 months 16 days	3 years 4 months 10 days
Weighted Average Remaining Contractual Term, Issued	4 years 10 months 24 days	4 years 7 months 10 days	4 years 9 months 7 days