Note 16 - 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, 2025	Jul. 31, 2024	Jul. 31, 2023
Number of Options Exercised on Cash Basis (in shares)	264,663	492,112	365,537
Number of Options Exercised on Non-Cash Basis (in shares)	287,389	2,959,634	3,630,360
Total Number of Options Exercised (in shares)	552,052	3,451,746	3,995,897
Number of Shares Issued on Cash Exercise (in shares)	264,663	492,112	365,537
Number of Shares Issued on Non-Cash Basis (in shares)	164,037	1,953,636	1,986,007
Total Number of Shares Issued Upon Exercise of Options (in shares)	428,700	2,445,748	2,351,544
Cash Received from Exercise of Stock Options	$ 727	$ 681	$ 553
Total Intrinsic Value of Options Exercised	$ 2,741	$ 19,137	$ 8,867