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Schedule of Equity Investments (Details) (Parenthetical) - shares	9 Months Ended	12 Months Ended
	Apr. 30, 2021	Jul. 31, 2020
Common Class B [Member] | Zedge Inc [Member]
Schedule of Capitalization, Equity [Line Items]
Number of related party shares received	42,282	42,282
Common Class B [Member] | Rafael Holdings Inc. [Member]
Schedule of Capitalization, Equity [Line Items]
Number of related party shares received	28,320	27,806
Restricted Common Class B [Member] | Rafael Holdings Inc. [Member]
Schedule of Capitalization, Equity [Line Items]
Number of related party shares received	261,894

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