Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Share Issuance Obligation [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Jul. 31, 2019	180,896,431
Balance at Jul. 31, 2019	$ 180,896	$ 336,047,595	$ 187,100	$ (262,200,784)	$ 12,461	$ 74,227,268
Common stock issued under Stock Incentive Plan (in shares)	435,348
Common stock issued under Stock Incentive Plan	$ 436	410,026	(187,100)			223,362
Amortization of stock-based compensation		662,232				662,232
Net loss for the period				(5,042,577)		(5,042,577)
Other comprehensive income (loss)					(9,894)	(9,894)
Common stock issued for consulting services (in shares)	29,167
Common stock issued for consulting services	$ 29	31,763				31,792
Balance (in shares) at Oct. 31, 2019	181,360,946
Balance at Oct. 31, 2019	$ 181,361	337,151,616		(267,243,361)	2,567	70,092,183
Balance (in shares) at Jul. 31, 2020	184,635,870
Balance at Jul. 31, 2020	$ 184,636	341,059,972	103,554	(276,811,300)	(120,244)	64,416,618
Issued for equity financing, net of issuance costs (in shares)	12,500,000
Issued for equity financing, net of issuance costs	$ 12,500	12,455,787				$ 12,468,287
Issued upon exercise of stock options (in shares)	13,532					28,500
Issued upon exercise of stock options	$ 15	9,294				$ 9,309
Common stock issued under Stock Incentive Plan (in shares)	227,390
Common stock issued under Stock Incentive Plan	$ 226	235,043	30,321			265,590
Amortization of stock-based compensation		1,046,175				1,046,175
Issued for equity financing		1,518,432				1,518,432
Issued for equity financing as issuance costs		134,937				134,937
Net loss for the period				(4,963,537)		(4,963,537)
Other comprehensive income (loss)					62,761	62,761
Balance (in shares) at Oct. 31, 2020	197,376,792
Balance at Oct. 31, 2020	$ 197,377	$ 356,459,640	$ 133,875	$ (281,774,837)	$ (57,483)	$ 74,958,572