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Note 12 - Stock-based Compensation - Schedule of Outstanding Unvested Stock Options (Details) - $ / shares | 3 Months Ended
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Jan. 31, 2024 | Oct. 31, 2023
Balance, July 31, 2023 (in shares) | 1,675,403 | 1,803,265
Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share) | $ 2.29 | $ 2.28
Granted (in shares) | 10,000 | 17,500
Granted, Fair Value (in dollars per share) | $ 5.05 | $ 3.36
Cancelled/Forfeited (in shares) |  | (12,300)
Cancelled/Forfeited, Weighted Average Grant-Date Fair Value (in dollars per share) |  | $ 2.37
Vested (in shares) | (429,513) | (133,062)
Vested (in dollars per share) | $ 2.39 | $ 2.18
Granted (in dollars per share) | 5.05 | 3.36
Vested (in dollars per share) | $ 2.39 | $ 2.18
Balance, October 31, 2023 (in shares) | 1,255,890 | 1,675,403
Balance, October 31, 2023 (in dollars per share) | $ 2.28 | $ 2.29

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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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