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Schedule of Equity Investments (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Jul. 31, 2022
Current equity investments	$ 5,776	$ 17,091
Noncurrent equity investments	10,263	7,426
Other Marketable Equity Securities [Member]
Current equity investments	1,112	4,089
Mutual Fund [Member]
Current equity investments	3,994	12,299
Hedge Funds [Member]
Noncurrent equity investments	3,136	3,238
Other Investments [Member]
Noncurrent equity investments	2,825	825
Common Class B [Member] | Zedge Inc [Member]
Current equity investments	84	117
Common Class B [Member] | Rafael Holdings Inc. [Member]
Current equity investments	586	586
Series C Convertible Preferred Stock [Member] | Visa Inc [Member]
Noncurrent equity investments	1,238	1,132
Series A Convertible Preferred Stock [Member] | Visa Inc [Member]
Noncurrent equity investments		1,230
Convertible Preferred Stock [Member]
Noncurrent equity investments	$ 3,064	$ 1,001

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