Note 17 - Stock-Based Compensation - Schedule of Outstanding RSUs (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
Restricted Stock Units (RSUs) [Member]
Balance, number of restricted stock units (in shares)	979,500	836,034	997,612
Balance, weighted average grant date fair value (in dollars per share)	$ 3.32	$ 2.61	$ 1.42
Granted, number of restricted stock units (in shares)	642,464	620,386	346,790
Granted, weighted average grant date fair value (in dollars per share)	$ 5.57	$ 3.32	$ 4.03
Vested, number of restricted stock units (in shares)	(454,284)	(464,985)	(508,368)
Vested, weighted average grant date fair value (in dollars per share)	$ 3.14	$ 2.02	$ 1.25
Forfeited, number of restricted stock units (in shares)		(11,935)
Forfeited, weighted average grant date fair value (in dollars per share)		$ 3.98
Balance, number of restricted stock units (in shares)	1,167,680	979,500	836,034
Balance, weighted average grant date fair value (in dollars per share)	$ 4.63	$ 3.32	$ 2.61