Note 16 - Stock-based Compensation - Summary of Outstanding Unvested RSUs (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Grant Date Fair Value (in dollars per share)	$ 3.96	$ 4.56	$ 3.29	$ 3.24
Restricted Stock Units (RSUs) [Member]
Number of Restricted Stock Units (in shares)	1,203,197	1,167,680	979,500	836,034
Grant Date Fair Value (in dollars per share)	$ 6.6	$ 4.63	$ 3.32	$ 2.61
Remaining Life (Year)	2 years 4 months 9 days
Aggregate Intrinsic Value	$ 10,432
Restricted Stock Units (RSUs) [Member] | July 31, 2023 [Member]
Number of Restricted Stock Units (in shares)	206,800
Grant Date Fair Value (in dollars per share)	$ 3.32
Remaining Life (Year)	1 year 29 days
Aggregate Intrinsic Value	$ 1,793
Restricted Stock Units (RSUs) [Member] | April 1, 2024 [Member]
Number of Restricted Stock Units (in shares)	13,334
Grant Date Fair Value (in dollars per share)	$ 7.07
Remaining Life (Year)	1 year 9 months
Aggregate Intrinsic Value	$ 116
Restricted Stock Units (RSUs) [Member] | July 26, 2024 [Member]
Number of Restricted Stock Units (in shares)	406,732
Grant Date Fair Value (in dollars per share)	$ 5.49
Remaining Life (Year)	2 years 25 days
Aggregate Intrinsic Value	$ 3,526
Restricted Stock Units (RSUs) [Member] | September 1, 2024 [Member]
Number of Restricted Stock Units (in shares)	355
Grant Date Fair Value (in dollars per share)	$ 5.23
Remaining Life (Year)	2 months 1 day
Aggregate Intrinsic Value	$ 3
Restricted Stock Units (RSUs) [Member] | October 1, 2024 [Member]
Number of Restricted Stock Units (in shares)	16,103
Grant Date Fair Value (in dollars per share)	$ 6.21
Remaining Life (Year)	2 years 3 months
Aggregate Intrinsic Value	$ 140
Restricted Stock Units (RSUs) [Member] | November 5, 2024 [Member]
Number of Restricted Stock Units (in shares)	1,673
Grant Date Fair Value (in dollars per share)	$ 7.12
Remaining Life (Year)	1 year 4 months 6 days
Aggregate Intrinsic Value	$ 15
Restricted Stock Units (RSUs) [Member] | November 5, 2024 2 [Member]
Number of Restricted Stock Units (in shares)	14,344
Grant Date Fair Value (in dollars per share)	$ 7.12
Remaining Life (Year)	2 years 4 months 6 days
Aggregate Intrinsic Value	$ 124
Restricted Stock Units (RSUs) [Member] | January 6, 2025 [Member]
Number of Restricted Stock Units (in shares)	5,874
Grant Date Fair Value (in dollars per share)	$ 7.06
Remaining Life (Year)	2 years 6 months 7 days
Aggregate Intrinsic Value	$ 51
Restricted Stock Units (RSUs) [Member] | January 27, 2025 [Member]
Number of Restricted Stock Units (in shares)	2,122
Grant Date Fair Value (in dollars per share)	$ 7.07
Remaining Life (Year)	2 years 6 months 29 days
Aggregate Intrinsic Value	$ 18
Restricted Stock Units (RSUs) [Member] | June 9, 2025 [Member]
Number of Restricted Stock Units (in shares)	222
Grant Date Fair Value (in dollars per share)	$ 6.61
Remaining Life (Year)	1 year 11 months 8 days
Aggregate Intrinsic Value	$ 2
Restricted Stock Units (RSUs) [Member] | July 31, 2025 [Member]
Number of Restricted Stock Units (in shares)	535,638
Grant Date Fair Value (in dollars per share)	$ 8.68
Remaining Life (Year)	3 years 1 month 2 days
Aggregate Intrinsic Value	$ 4,644