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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Number of new stock issued during the period.

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Note 13 - Capital Stock (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
Note 13 - Capital Stock (Details Textual) - USD ($)	Mar. 16, 2022	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021	Nov. 26, 2021	Jul. 31, 2021	May 14, 2021
Proceeds from Warrant Exercises		$ 1,141,903		$ 2,052,231
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		12,815,860		12,815,860
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value		9,560,154		9,560,154
Share-based Compensation Arrangement by Share-based Payment Award, Options, Unvested in Period, Intrinsic Value		3,255,706		3,255,706
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 796,083		796,083
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		11 months 19 days
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 754,729		754,729
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 6 months 3 days
Share-based Payment Arrangement, Expense		$ 188,821	$ 271,834	$ 377,642	$ 543,668
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)		997,612		997,612			997,612
Performance-based Restriced Stock Units [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 548,459		$ 548,459
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 6 months 10 days
Share-based Payment Arrangement, Expense		$ 73,269	$ 37,544	$ 146,689	$ 75,088
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)		1,250,451		1,250,451			1,250,451
May 2021 At-the-market Offering [Member]
Stock Offering, Maximum Amount								$ 100,000,000
Stock Issued During Period, Shares, New Issues (in shares)		6,655,295		27,399,173
Proceeds from Issuance of Common Stock, Net		$ 28,919,064		$ 91,590,187
November 2021 At-the-market Offering [Member]
Stock Offering, Maximum Amount						$ 100,000,000
Stock Issued During Period, Shares, New Issues (in shares)		11,096,363
Proceeds from Issuance of Common Stock, Net		$ 39,053,602
November 2021 At-the-market Offering [Member] \| Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares)	4,460,000
Proceeds from Issuance of Common Stock, Net	$ 16,547,026