Schedule of Unrealized (losses) Gains for All Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Net losses recognized during the period on equity investments	$ (917)	$ (1,941)
Plus: net losses recognized during the period on equity investments sold during the period		4
Unrealized losses recognized during the period on equity investments still held at the reporting date	(917)	(1,937)
Rafael Class B Common Stock [Member]
Unrealized losses recognized during the period on equity investments still held at the reporting date	(62)	(72)
Zedge Class B Common Stock [Member]
Unrealized losses recognized during the period on equity investments still held at the reporting date	$ (8)	$ (27)