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Note 14 - Stock-based Compensation (Tables)

12 Months Ended

Jul. 31, 2021

Notes Tables

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Year Ended July 31,
		2021				2020
Expected Risk Free Interest Rate			0.70	%			0.40	%
Expected Volatility			72.57	%			60.48	%
Expected Life in Years			5.0				4.9
Expected Dividend Yield			0	%			0	%
Weighted-Average Grant Date Fair Value		$	1.30			$	0.45

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

		Number of Stock Options				Weighted Average Exercise Price
Balance, July 31, 2019			15,738,350			$	1.30
Granted			6,163,900				0.95
Cancelled/Forfeited			(179,344	)			1.02
Expired			(6,208,156	)			1.39
Balance, July 31, 2020			15,514,750				1.13
Granted			959,588				2.21
Exercised			(4,705,005	)			1.09
Expired			(1,365,000	)			1.48
Balance, July 31, 2021			10,404,333			$	1.21

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

		Year Ended July 31,
		2021				2020
Number of Options Exercised on Forfeiture Basis			2,970,878				-
Number of Options Exercised on Cash Basis			1,734,127				-
Total Number of Options Exercised			4,705,005				-
Number of Shares Issued on Cash Exercise			1,734,127				-
Number of Shares Issued on Forfeiture Basis			1,592,128				-
Total Number of Shares Issued Upon Exercise of Options			3,326,255				-
Cash Received from Exercise of Stock Options		$	1,915,995			$	-
Total Intrinsic Value of Options Exercised		$	6,882,464			$	-

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, 2019			3,310,600			$	0.59
Granted			6,163,900				0.45
Vested			(2,590,154	)			0.60
Cancelled/Forfeited			(86,875	)			0.43
Balance, July 31, 2020			6,797,471				0.46
Granted			959,588				1.30
Vested			(3,865,852	)			0.47
Balance, July 31, 2021			3,891,207			$	0.66

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

				Options Outstanding												Options Exercisable
Range of Exercise Prices				Outstanding at July 31, 2021				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)				Exercisable at July 31, 2021				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)
$0.80	to	$0.99			5,342,620			$	0.92				8.56				3,289,024			$	0.92				8.35
$1.00	to	$1.49			2,500,125				1.17				5.30				1,616,791				1.21				3.30
$1.50	to	$2.80			2,561,588				1.84				4.87				1,607,311				1.61				1.86
					10,404,333			$	1.21				6.87				6,513,126			$	1.16				5.49

Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

		Number of Restricted Stock Units				Weighted Average Grant Date Fair Value
Balance, July 31, 2019			465,000			$	0.94
Granted			1,305,000				0.91
Vested			(155,000	)			0.94
Balance, July 31, 2020			1,615,000				0.92
Granted			407,617				2.15
Vested			(1,025,005	)			0.91
Balance, July 31, 2021			997,612			$	1.42

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			154,999			$	0.94				1.00			$	336,348
July 16, 2020			434,996				0.91				1.96				943,941
July 21, 2021			407,617				2.15				2.98				884,529
			997,612			$	1.42				2.22			$	2,164,818

Schedule of Performance Based Restricted Stock Units, Valuation Assumptions [Table Text Block]

Expected Risk Free Interest Rate			0.39	%
Expected Volatility			78.03	%
Expected Dividend Yield			0	%
Expected Life in Years			3
Correlation			66.02	%
Grant Price		$	2.15
Grant Date Fair Value		$	2.48

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

		Number of Unvested PRSUs				Weighted Average Grant Date Fair Value
Balance, July 31, 2019			890,000			$	1.15
Forfeited			(132,499	)			1.15
Balance, July 31, 2020			757,501				1.15
Granted			492,950				2.48
Balance, July 31, 2021			1,250,451			$	1.67

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

		Year Ended July 31,
		2021				2020
Stock-Based Compensation for Consultants
Common stock issued to consultants		$	876,695			$	539,552
Amortization of stock option expenses			288,603				240,912
			1,165,298				780,464
Stock-Based Compensation for Management
Common stock issued to management			135,000				225,217
Amortization of stock option expenses			773,583				644,516
Amortization of RSU & PRSU expenses			1,215,560				582,785
			2,124,143				1,452,518
Stock-Based Compensation for Employees
Common stock issued to employees			1,199,958				635,414
Amortization of stock option expenses			982,179				640,011
			2,182,137				1,275,425
Settlement of share issuance obligation			-				(15,189	)
		$	5,471,578			$	3,493,218

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