CAPITAL STOCK (Details 1)	6 Months Ended
	Jan. 31, 2018 $ / shares shares
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 1.97
Number of Warrants Outstanding | shares	30,985,288
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	2 years 7 months 17 days
Warrant [Member]
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 1.20
Number of Warrants Outstanding | shares	4,604,631
Expiry Date	Mar. 10, 2019
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	1 year 1 month 6 days
Warrants1 [Member]
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 1.35
Number of Warrants Outstanding | shares	2,600,000
Expiry Date	Jan. 30, 2020
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	2 years
Warrants2 [Member]
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 1.95
Number of Warrants Outstanding | shares	50,000
Expiry Date	Jun. 03, 2018
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	4 months 2 days
Warrants3 [Member]
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 2.00
Number of Warrants Outstanding | shares	9,571,929
Expiry Date	Jan. 20, 2020
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	1 year 11 months 19 days
Warrants4 [Member]
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 2.30
Number of Warrants Outstanding | shares	11,308,728
Expiry Date	Aug. 09, 2022
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	4 years 6 months 7 days
Warrants5 [Member]
Class of Warrant or Right [Line Items]
Weighted Average Exercise Price | $ / shares	$ 2.35
Number of Warrants Outstanding | shares	2,850,000
Expiry Date	Jun. 25, 2018
Weighted Average Remaining Contractual Remaining Contractual Life (Years)	4 months 24 days