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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of new stock issued during the period.

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Note 13 - Capital Stock (Details Textual) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended
	Dec. 16, 2022	Oct. 31, 2022	Oct. 31, 2021	Nov. 16, 2022	Jul. 31, 2022	Nov. 26, 2021	May 17, 2021	May 14, 2021
Class of Warrant or Right, Outstanding (in shares)		4,837,586			3,615,454
Proceeds from Warrant Exercises		$ 6,140
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value		22,631
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value		19,868
Share-based Compensation Arrangement by Share-based Payment Award, Options, Unvested in Period, Intrinsic Value		2,763
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		2,715
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		1,456
Share-Based Payment Arrangement, Expense		$ 293	$ 189
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 8 months 1 day
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)		836,034
Performance-based Restriced Stock Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 881	981
Share-Based Payment Arrangement, Expense		$ 99	$ 73
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 2 months 1 day	2 years 4 months 28 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)		734,582	734,582
Replacement Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)		4,630,768
Shelf 2021 [Member]
Stock Offering, Maximum Amount						$ 200,000	$ 200,000
May 17, 2021 At-the-market Offering [Member]
Stock Offering, Maximum Amount							$ 100,000
May 14, 2021 At-the-market Offering [Member]
Stock Offering, Maximum Amount								$ 100,000
Stock Issued During Period, Shares, New Issues (in shares)		5,218,890
Proceeds from Issuance of Common Stock, Net		$ 21,714
November 2021 At-the-market Offering [Member]
Stock Offering, Maximum Amount						$ 100,000
Shelf 2022 [Member]
Stock Offering, Maximum Amount				$ 300,000
November 2022 At-the-market Offering [Member]
Stock Offering, Maximum Amount				$ 300,000
May 2021 At-the-market Offerings [Member] \| Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares)	3,687,663
Proceeds from Issuance of Common Stock, Net	$ 13,505