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	$ 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
Common stock issued for consulting services (in shares)	29,167
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
Issued upon exercise of stock options (in shares)
Net loss for the period						$ (6,931,238)
Other comprehensive income (loss)						(49,542)
Balance (in shares) at Jan. 31, 2020	183,673,815
Balance at Jan. 31, 2020	$ 183,674	339,570,053		(269,132,022)	(37,081)	70,584,624
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
Issued upon exercise of stock options (in shares)
Common stock issued under Stock Incentive Plan (in shares)	256,206
Common stock issued under Stock Incentive Plan	$ 257	234,535				$ 234,792
Amortization of stock-based compensation		485,268				485,268
Net loss for the period				(1,888,661)		(1,888,661)
Other comprehensive income (loss)					(39,648)	(39,648)
Issued as anniversary fees for credit facility (in shares)	1,743,462
Issued as anniversary fees for credit facility	$ 1,743	1,398,257				1,400,000
Common stock issued for consulting services	$ 313	277,644				277,957
Balance (in shares) at Jan. 31, 2020	183,673,815
Balance at Jan. 31, 2020	$ 183,674	339,570,053		(269,132,022)	(37,081)	70,584,624
Common stock issued for consulting services (in shares)	313,201
Issued for consulting services, warrants		22,733				22,733
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
Stock issued (in shares)	12,500,000
Stock issued	$ 12,500	12,455,787				12,468,287
Issued upon exercise of stock options (in shares)	13,532
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
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 upon exercise of stock options (in shares)						573,060
Net loss for the period						$ (8,424,596)
Other comprehensive income (loss)						548,799
Balance (in shares) at Jan. 31, 2021	200,142,556
Balance at Jan. 31, 2021	$ 200,142	360,110,479	143,563	(285,235,896)	428,555	75,646,843
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
Stock issued (in shares)	632,487
Stock issued	$ 632	1,073,705				$ 1,074,337
Issued upon exercise of stock options (in shares)	559,528					559,528
Issued upon exercise of stock options	$ 559	211,566				$ 212,125
Common stock issued under Stock Incentive Plan (in shares)	323,660
Common stock issued under Stock Incentive Plan	$ 324	358,359	(30,321)			328,362
Amortization of stock-based compensation		836,569				836,569
Net loss for the period				(3,461,059)		(3,461,059)
Other comprehensive income (loss)					486,038	$ 486,038
Issued as anniversary fees for credit facility (in shares)	1,249,039					1,249,039
Issued as anniversary fees for credit facility	$ 1,249	1,168,751				$ 1,170,000
Issued upon exercise of warrants (in shares)	1,050
Issued upon exercise of warrants	$ 1	1,889				1,890
Common stock issued for consulting services			40,009			40,009
Balance (in shares) at Jan. 31, 2021	200,142,556
Balance at Jan. 31, 2021	$ 200,142	$ 360,110,479	$ 143,563	$ (285,235,896)	$ 428,555	$ 75,646,843