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Schedule of Equity Investments (Details) - USD ($) $ in Thousands | Oct. 31, 2021 | Jul. 31, 2021
--- | --- | ---
Equity Securities, FV-NI, Current | $ 31,144 | $ 42,434
Long-term Investments | 9,487 | 11,654
Other Marketable Equity Securities [Member] |  |
Equity Securities, FV-NI, Current | 5,186 | 3,630
Mutual Fund [Member] |  |
Equity Securities, FV-NI, Current | 23,276 | 23,467
Hedge Funds [Member] |  |
Long-term Investments | 2,814 | 3,563
Other Investments [Member] |  |
Long-term Investments | 1,225 | 2,725
Common Class B [Member] | Zedge Inc [Member] |  |
Equity Securities, FV-NI, Current | 488 | 649
Common Class B [Member] | Rafael Holdings Inc. [Member] |  |
Equity Securities, FV-NI, Current | 2,194 | 12,479
Restricted Common Class B [Member] | Rafael Holdings Inc. [Member] |  |
Equity Securities, FV-NI, Current |  | 2,209
Series C Preferred Stock [Member] |  |
Long-term Investments | 2,119 | 2,465
Series B Convertible Preferred Stock [Member] |  |
Long-term Investments | $ 3,329 | $ 2,901

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