Note 17 - Stock-Based Compensation - Schedule of Unvested Performance Restricted Stock Options (Details) - $ / shares	12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Balance, weighted average grant date fair value (in dollars per share)	$ 3.29	$ 3.24	$ 1.67
Granted, weighted average grant date fair value (in dollars per share)	5.41	3.35	4.8
Vested, weighted average grant date fair value (in dollars per share)	2.48		1.15
Balance, weighted average grant date fair value (in dollars per share)	$ 4.56	$ 3.29	$ 3.24
Performance-based Restriced Stock Units [Member]
Balance, number of restricted stock units (in shares)	1,286,505	734,582	1,250,451
Granted, number of restricted stock units (in shares)	718,308	551,923	241,632
Granted, weighted average grant date fair value (in dollars per share)	$ 5.41	$ 3.35	$ 4.8
Vested, number of unvested PRSUs (in shares)	(492,950)		(757,501)
Balance, number of restricted stock units (in shares)	1,511,863	1,286,505	734,582