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Equity Investments (Details Narrative) - USD ($) $ in Thousands |  |  | 3 Months Ended
--- | --- | --- | ---
Aug. 10, 2021 | Feb. 02, 2021 | Oct. 31, 2021 | Oct. 31, 2020
Payments to acquire equity method investments |  |  | $ 1,051 |
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity | $ 1,000 | $ 3,400 |  |
Unrestricted Common Class B [Member] | Rafael Holdings Inc. [Member] |  |  |  |
Number of related party shares received |  |  | 28,320 |
Class B Common Stock [Member] | Rafael Holdings Inc. [Member] |  |  |  |
Investment Owned, Balance, Shares |  |  | 261,894 |
Unrealized losses |  |  | $ 12,500 |
Visa Series C Convertible Participating Preferred Stock [Member] |  |  |  |
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount |  |  | $ 300 | $ 100
Series B Convertible Preferred Stock [Member] | Equity Method Investee [Member] |  |  |  |
Payments to acquire equity method investments |  | $ 4,000 |  |
Equity method investment, ownership percentage |  | 23.95% |  |
Series C Convertible Preferred Stock [Member] | Equity Method Investee [Member] |  |  |  |
Payments to acquire equity method investments | $ 1,100 |  |  |
Equity method investment, ownership percentage | 26.57% |  |  |

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