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Proposed Spin-Off of Rafael Holdings, Inc. and Investment in Rafael Pharmaceuticals, Inc. (Tables) | 6 Months Ended
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Jan. 31, 2018
Spin-Off of Rafael Holdings, Inc. and Investment in Rafael Pharmaceuticals, Inc. [Abstract] |
Schedule of consolidated balance sheets |
|  | January 31, 2018 |  |  | July 31, 2017 |
|  | (in thousands) |
Series D Note (at fair value) |  | $ | 6,300 |  |  | $ | 6,300 |
Warrants (at cost) |  |  | 5,400 |  |  |  | 5,400 |
Right to receive additional shares (at cost) |  |  | — |  |  |  | 400 |
Total investment in Rafael Pharma |  | $ | 11,700 |  |  | $ | 12,100

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