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Equity Investments (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019 | Jul. 31, 2019 | Jun. 30, 2016
Common Class B | Zedge Inc [Member] |  |  |  |  |  |
Equity Investments (Textual) |  |  |  |  |  |
Shares of common stock |  |  | 42,282 |  | 42,282 |
Common Class B | Rafael Holdings Inc [Member] |  |  |  |  |  |
Equity Investments (Textual) |  |  |  |  |  |
Shares of common stock |  |  | 27,419 |  | 27,419 |
Visa Series C Preferred [Member] |  |  |  |  |  |
Equity Investments (Textual) |  |  |  |  |  |
Owned shares | 1,830 | 1,830 | 1,830 | 1,830 |  | 1,830
Shares owned fair value | $ 400 | $ (71) | $ 400 | $ (49) |  |
Convertible shares |  |  |  |  |  | 13.886

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