Note 13 - Stock-Based Compensation - Schedule of Outstanding Stock Options (Details) - $ / shares	3 Months Ended			6 Months Ended
	Jan. 31, 2025	Oct. 31, 2024	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Balance, number of stock options (in shares)	4,942,317	5,103,339		5,103,339
Balance, Weighted Average Exercise Price (in dollars per share)	$ 2.67	$ 2.66		$ 2.66
Granted, Non-vested, number of shares (in shares)	1,289	24,415
Granted, Weighted Average Exercise Price (in dollars per share)	$ 8.28	$ 6.21
Exercised, number of stock options (in shares)	(63,852)	(173,375)	(878,503)	(237,227)	(1,486,685)
Exercised, Weighted Average Exercise Price (in dollars per share)	$ 3.34	$ 2.85
Cancelled/Forfeited, number of stock options (in shares)	(22,524)	(12,062)
Cancelled/Forfeited, Weighted Average Exercise Price (in dollars per share)	$ 4.37	$ 4.32
Balance, number of stock options (in shares)	4,857,230	4,942,317		4,857,230
Balance, Weighted Average Exercise Price (in dollars per share)	$ 2.66	$ 2.67		$ 2.66