Schedule of Equity Investments (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jul. 31, 2021
Current equity investments	$ 28,494	$ 42,434
Noncurrent equity investments	8,355	11,654
Other Marketable Equity Securities [Member]
Current equity investments	4,012	3,630
Mutual Fund [Member]
Current equity investments	22,961	23,467
Hedge Funds [Member]
Noncurrent equity investments	2,360	3,563
Other Investments [Member]
Noncurrent equity investments	1,225	2,725
Common Class B [Member] | Zedge Inc [Member]
Current equity investments	320	649
Common Class B [Member] | Rafael Holdings Inc. [Member]
Current equity investments	1,201	12,479
Restricted Common Class B [Member] | Rafael Holdings Inc. [Member]
Current equity investments		2,209
Series C Convertible Preferred Stock [Member] | Visa Inc. [Member]
Noncurrent equity investments	2,261	2,465
Series B and Series C Convertible Preferred Stock [Member]
Noncurrent equity investments	$ 2,509	$ 2,901