Note 12 - Stock-Based Compensation - Schedule of Outstanding Stock Options (Details) - $ / shares	3 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Balance, number of stock options (in shares)	5,103,339
Balance, Weighted Average Exercise Price (in dollars per share)	$ 2.66
Granted, Non-vested, number of shares (in shares)	24,415
Granted, Weighted Average Exercise Price (in dollars per share)	$ 6.21
Exercised, number of stock options (in shares)	(173,375)	(608,182)
Exercised, Weighted Average Exercise Price (in dollars per share)	$ 2.85
Cancelled/Forfeited, number of stock options (in shares)	(12,062)
Cancelled/Forfeited, Weighted Average Exercise Price (in dollars per share)	$ 4.32
Balance, number of stock options (in shares)	4,942,317
Balance, Weighted Average Exercise Price (in dollars per share)	$ 2.67