Note 17 - Stock-Based Compensation - Number of Shares Issued and Cash Received Upon Exercise of the Stock Options (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Number of Options Exercised on Cash Basis (in shares)	492,112	365,537	872,580
Number of Options Exercised on Non-Cash Basis (in shares)	2,959,634	3,630,360	1,855,918
Total Number of Options Exercised (in shares)	3,451,746	3,995,897	2,728,498
Number of Shares Issued on Cash Exercise (in shares)	492,112	365,537	872,580
Number of Shares Issued on Non-Cash Basis (in shares)	1,953,636	1,986,007	1,279,515
Total Number of Shares Issued Upon Exercise of Options (in shares)	2,445,748	2,351,544	2,152,095
Cash Received from Exercise of Stock Options	$ 681	$ 553	$ 934
Total Intrinsic Value of Options Exercised	$ 19,137	$ 8,867	$ 8,336