Schedule of Assets Measured at Fair Value On a Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Fair Value Disclosures [Abstract]
Balance, beginning of period	$ 2,261	$ 2,319	$ 2,465	$ 3,825
Purchase of Rafael Holdings, Inc. warrant				354
Exercise of Rafael Holdings, Inc. warrant		(380)		(380)
Redemption for Visa mandatory release assessment				(1,870)
Total (losses) gains recognized in “Other (expense) income, net”	(130)	404	(334)	414
Balance, end of period	2,131	2,343	2,131	2,343
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the period