Note 11 - Stock-based Compensation - Schedule of Outstanding Stock Options (Details) - $ / shares	3 Months Ended	6 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2026	Jan. 31, 2025
Balance, number of stock options (in shares)			4,594,207
Balance, Weighted Average Exercise Price (in dollars per share)			$ 2.71
Exercised, number of stock options (in shares)	(184,500)	(63,852)	(1,041,720)	(237,227)
Exercised, Weighted Average Exercise Price (in dollars per share)			$ 2.45
Forfeited (in shares)			(1,400)
Forfeited, Weighted Average Exercise Price (in dollars per share)			$ 5.49

Number of share options (or share units) exercised during the current period.

No definition available.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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