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Schedule of Equity Investments (Details) - USD ($)
$ in Thousands
Oct. 31, 2022
Jul. 31, 2022
Current equity investments $ 9,369 $ 17,091
Noncurrent equity investments 6,916 7,426
Other Marketable Equity Securities [Member]    
Current equity investments 2,679 4,089
Mutual Fund [Member]    
Current equity investments 6,086 12,299
Hedge Funds [Member]    
Noncurrent equity investments 3,137 3,238
Other Investments [Member]    
Noncurrent equity investments 2,325 825
Common Class B [Member] | Zedge Inc [Member]    
Current equity investments 90 117
Common Class B [Member] | Rafael Holdings Inc. [Member]    
Current equity investments 514 586
Series C Convertible Preferred Stock [Member] | Visa Inc [Member]    
Noncurrent equity investments 1,105 1,132
Series A Convertible Preferred Stock [Member] | Visa Inc [Member]    
Noncurrent equity investments 1,230
Series B and Series C Convertible Preferred Stock [Member]    
Noncurrent equity investments $ 349 $ 1,001