Note 13 - Capital Stock (Tables)

6 Months Ended

Jan. 31, 2022

Notes Tables

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

	Number of Warrants			Weighted Average Exercise Price
Balance, July 31, 2021		5,387,323		$	1.90
Exercised		(491,849	)		1.85
Balance, October 31, 2021		4,895,474			1.91
Exercised		(572,850	)		1.99
Balance, January 31, 2022		4,322,624		$	1.90

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
$	1.80		4,115,806		0.64	September 23, 2022
	1.64		25,000		1.30	May 21, 2023
	4.13		181,818		4.18	April 5, 2026
$	1.90		4,322,624		0.80

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

	Number of Stock Options			Weighted Average Exercise Price
Balance, July 31, 2021		10,404,333		$	1.21
Granted		10,000			2.89
Exercised		(1,030,543	)		1.18
Expired		(60,000	)		2.78
Balance, October 31, 2021		9,323,790			1.20
Exercised		(244,834	)		1.27
Expired		(15,000	)		1.36
Balance, January 31, 2022		9,063,956		$	1.20

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

	Three Months Ended January 31,				Six Months Ended January 31,
	2022		2021		2022		2021
Number of Options Exercised on Cash Basis		57,750		177,500		402,748		187,500
Number of Options Exercised on Forfeiture Basis		187,084		923,282		872,629		941,782
Total Number of Options Exercised		244,834		1,100,782		1,275,377		1,129,282
Number of Shares Issued on Cash Exercise		57,750		177,500		402,748		187,500
Number of Shares Issued on Forfeiture Basis		135,595		382,028		544,587		385,560
Total Number of Shares Issued Upon Exercise of Options		193,345		559,528		947,335		573,060
Cash Received from Exercise of Stock Options	$	63,404	$	212,125	$	447,183	$	221,434
Total Intrinsic Value of Options Exercised	$	889,296	$	822,237	$	2,794,512	$	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, 2021		3,891,207		$	0.66
Granted		10,000			1.73
Vested		(265,427	)		0.87
Balance, October 31, 2021		3,635,780			0.64
Vested		(1,069,948	)		0.55
Balance, January 31, 2022		2,565,832		$	0.68

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

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Outstanding at January 31, 2022		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Exercisable at January 31, 2022		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)
$0.80 to $0.99		4,794,247	$	0.92		8.06		3,840,186	$	0.92		7.96
$1.00 to $1.49		2,013,875		1.16		5.78		1,130,541		1.21		3.69
$1.50 to $2.89		2,255,834		1.82		4.88		1,527,397		1.63		2.70
		9,063,956	$	1.20		6.76		6,498,124	$	1.14		5.98

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		0.49	$	404,547
July 16, 2020		434,996		0.91		1.45		1,135,340
July 21, 2021		407,617		2.15		2.47		1,063,880
		997,612	$	1.42		1.72	$	2,603,767

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

	Three Months Ended January 31,				Six Months Ended January 31,
	2022		2021		2022		2021
Stock-Based Compensation for Consultants
Common stock issued to consultants	$	201,115	$	119,847	$	505,702	$	239,317
Amortization of stock option expenses		56,802		65,774		136,575		169,702
		257,917		185,621		642,277		409,019
Stock-Based Compensation for Management
Amortization of stock option expenses		125,608		206,317		291,157		460,048
Amortization of RSU and PRSU expenses		262,090		309,378		524,331		618,756
		387,698		515,695		815,488		1,078,804
Stock-Based Compensation for Employees
Common stock issued to employees		339,094		261,642		612,007		474,512
Amortization of stock option expenses		209,497		255,100		505,094		634,238
		548,591		516,742		1,117,101		1,108,750
	$	1,194,206	$	1,218,058	$	2,574,866	$	2,596,573