Note 13 - Capital Stock (Tables)

6 Months Ended

Jan. 31, 2021

Notes Tables

Schedule of Warrants, Valuation Assumptions [Table Text Block]

Expected Risk Free Interest Rate	0.14	%
Expected Annual Volatility	76.81	%
Expected Contractual Life in Years	2.00
Expected Annual Dividend Yield	0.00	%

Schedule of Net Proceeds Allocation [Table Text Block]

Fair Value of Shares	$	12,000,000
Fair Value of Share Purchase Warrants		1,445,756
Total Fair Value Before Allocation to Net Proceeds	$	13,445,756
Gross Proceeds	$	15,000,000
Share Issuance Costs - Cash		(878,344	)
Net Cash Proceeds Received	$	14,121,656
Relative Fair Value Allocation to:
Shares	$	12,603,224
Share Purchase Warrants		1,518,432
	$	14,121,656

Schedule Of Share based Compensation Warrants Activity [Table Text Block]

	Number of Warrants			Weighted Average Exercise Price
Balance, July 31, 2020		7,721,981		$	2.03
Issued in connection with September 2020 Offering		6,833,333			1.80
Balance, October 31, 2020		14,555,314			1.92
Exercised		(1,050	)		1.80
Expired		(300,000	)		1.38
Balance, January 31, 2021		14,254,264		$	1.93

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Weighted Average Exercise Price		Number of Warrants Outstanding		Weighted Average Remaining Contractual Life (Years)		Expiry Date
$	2.05		7,063,253		0.17	April 3, 2021
	2.30		308,728		1.52	August 9, 2022
	1.64		50,000		2.30	May 21, 2023
	1.80		6,832,283		1.64	September 23, 2022
$	1.93		14,254,264		0.91

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Stock Options			Weighted Average Exercise Price
Balance, July 31, 2020		15,514,750		$	1.13
Exercised		(28,500	)		0.93
Expired		(1,315,000	)		1.43
Balance, October 31, 2020		14,171,250			1.10
Exercised		(1,100,782	)		1.11
Balance, January 31, 2021		13,070,468		$	1.10

Cash Proceeds Received and Tax Benefit from Share-based Payment Awards [Table Text Block]

	Three Months Ended January 31,				Six Months Ended January 31,
	2021		2020		2021		2020
Number of Options Exercised on Forfeiture Basis		923,282		-		941,782		-
Number of Options Exercised on Cash Basis		177,500		-		187,500		-
Total Number of Options Exercised		1,100,782		-		1,129,282		-
Number of Shares Issued on Cash Exercise		177,500		-		187,500		-
Number of Shares Issued on Forfeiture Basis		382,028		-		385,560		-
Total Number of Shares Issued Upon Exercise of Options		559,528		-		573,060		-
Cash Received from Exercise of Stock Options	$	212,125	$	-	$	221,434	$	-
Total Intrinsic Value of Options Exercised	$	822,237	$	-	$	828,615	$	-

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

	Number of Unvested Stock Options			Weighted Average Grant-Date Fair Value
Balance, July 31, 2020		6,797,471		$	0.46
Vested		(718,755	)		0.46
Balance, October 31, 2020		6,078,716			0.46
Vested		(1,042,559	)		0.48
Balance, January 31, 2021		5,036,157		$	0.45

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

			Options Outstanding						Options Exercisable
Range of Exercise Prices			Outstanding at Janury 31, 2021		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Exercisable at January 31, 2021		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)
$0.80	to	$0.99		7,481,468	$	0.92		7.55		3,816,561	$	0.92		5.98
$1.00	to	$1.49		3,587,000		1.18		4.57		2,215,750		1.24		1.65
$1.50	to	$2.81		2,002,000		1.65		2.29		2,002,000		1.65		2.29
				13,070,468	$	1.10		5.93		8,034,311	$	1.19		3.87

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Grant Date	Number of Restricted Stock Units		Grant Date Fair Value		Remaining Life (Years)		Aggregate Intrinsic Value
July 30, 2019		310,000	$	0.94		1.49	$	505,300
July 16, 2020		1,305,000		0.91		2.45		2,127,150
		1,615,000	$	0.92		2.27	$	2,632,450

Share-based Payment Arrangement, Cost by Plan [Table Text Block]

	Three Months Ended January 31,				Six Months Ended January 31,
	2021		2020		2021		2020
Stock-Based Compensation for Consultants
Common stock issued to consultants	$	119,847	$	126,150	$	239,317	$	233,758
Amortization of stock option expenses		65,774		53,554		169,702		100,525
		185,621		179,704		409,019		334,283
Stock-Based Compensation for Management
Common stock issued to management		-		34,100		-		68,807
Amortization of stock option expenses		206,317		162,728		460,048		406,105
Amortization of RSU & PRSU expenses		309,378		135,093		618,756		270,186
		515,695		331,921		1,078,804		745,098
Stock-Based Compensation for Employees
Common stock issued to employees		261,642		129,997		474,512		258,025
Amortization of stock option expenses		255,100		156,628		634,238		393,419
		516,742		286,625		1,108,750		651,444
Settlement of share issuance obligation		-		-		-		(15,189	)
	$	1,218,058	$	798,250	$	2,596,573	$	1,715,636