Note 17 - Stock-Based Compensation - Schedule of Outstanding Unvested Stock Options (Details) - $ / shares	12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Balance, Non-vested, number of shares (in shares)	1,803,265	2,186,154	3,891,207
Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 2.28	$ 1.79	$ 0.66
Granted, number of stock options (in shares)	483,461	1,205,254	1,279,692
Granted, Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 3.71	$ 2.18	$ 2.45
Vested, Non-vested, number of shares (in shares)	(1,175,338)	(3,865,242)	(2,984,745)
Vested, Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 2.35	$ 1.66	$ 0.59
Issuance of Replacement Options (Note 3), Non-vested, number of shares (in shares)		2,301,750
Issuance of Replacement Options (Note 3), Weighted Average Grant-Date Fair Value (in dollars per share)		$ 1.75
Granted, Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 3.71	$ 2.18	2.45
Forfeited, Non-vested, number of shares (in shares)	(24,400)	(24,651)
Forfeited, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 2.31	$ 2
Vested, Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 2.35	$ 1.66	$ 0.59
Balance, Non-vested, number of shares (in shares)	1,086,988	1,803,265	2,186,154
Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 2.83	$ 2.28	$ 1.79