CAPITAL STOCK (Details 6)	12 Months Ended
	Jul. 31, 2016 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Ending balance | shares	12,105,858
Options Outstanding, Weighted Average Exercise Price, Ending balance	$ 1.34
Options Exercisable, Ending balance | shares	9,782,858
Options Exercisable, Weighted Average Exercise Price, Ending balance	$ 1.43
Exercise Price Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	0.45
Exercise Price Range, Upper Range Limit	$ 0.96
Options Outstanding, Ending balance | shares	2,897,634
Options Outstanding, Weighted Average Exercise Price, Ending balance	$ 0.73
Options Exercisable, Ending balance | shares	1,269,634
Options Exercisable, Weighted Average Exercise Price, Ending balance	$ 0.47
Exercise Price Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	0.97
Exercise Price Range, Upper Range Limit	$ 2.45
Options Outstanding, Ending balance | shares	8,322,500
Options Outstanding, Weighted Average Exercise Price, Ending balance	$ 1.35
Options Exercisable, Ending balance | shares	7,627,500
Options Exercisable, Weighted Average Exercise Price, Ending balance	$ 1.37
Exercise Price Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	2.46
Exercise Price Range, Upper Range Limit	$ 5.70
Options Outstanding, Ending balance | shares	885,724
Options Outstanding, Weighted Average Exercise Price, Ending balance	$ 3.31
Options Exercisable, Ending balance | shares	885,724
Options Exercisable, Weighted Average Exercise Price, Ending balance	$ 3.31