Schedule of Equity Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jul. 31, 2022
Current equity investments	$ 6,198	$ 17,091
Noncurrent equity investments	9,874	7,426
Other Marketable Equity Securities [Member]
Current equity investments	1,497	4,089
Mutual Fund [Member]
Current equity investments	4,054	12,299
Convertible Preferred Stock [Member]
Noncurrent equity investments	2,784	1,001
Hedge Funds [Member]
Noncurrent equity investments	3,002	3,238
Other Investments [Member]
Noncurrent equity investments	2,825	825
Common Class B [Member] | Zedge Inc [Member]
Current equity investments	89	117
Common Class B [Member] | Rafael Holdings Inc. [Member]
Current equity investments	558	586
Series C Convertible Preferred Stock [Member] | Visa Inc. [Member]
Noncurrent equity investments	1,263	1,132
Series A Convertible Preferred Stock [Member] | Visa Inc. [Member]
Noncurrent equity investments		$ 1,230