Note 17 - Stock-Based Compensation - Summary of Stock Options Assumptions (Details) - $ / shares	12 Months Ended
	Jul. 31, 2024		Jul. 31, 2023	Jul. 31, 2022
Granted, Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 3.71		$ 2.18	$ 2.45
Share-Based Payment Arrangement, Option [Member]
Expected Risk Free Interest Rate	4.05%	[1]	4.14%	2.73%
Expected Volatility	78.83%	[1]	79.43%	78.75%
Expected Life in Years (Year)	5 years	[1]	4 years 10 months 24 days	4 years 11 months 15 days
Expected Dividend Yield	0.00%	[1]	0.00%	0.00%
Granted, Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 3.71	[1]	$ 2.18	$ 2.45

[1] The assumptions used for the fair value measurement of the Replacement Options are excluded in the table below as they have been separately disclosed in Note 3.