Schedule of Carrying Value of Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Cash and Cash Equivalents [Abstract]
Balance, beginning of period	$ 2,539	$ 2,223	$ 2,743	$ 4,109
Redemption for Visa mandatory release assessment				(1,870)
Adjustment for observable transactions involving a similar investment from the same issuer	(130)	404	(334)	388
Redemptions		(6)		(6)
Impairments
Balance, end of the period	$ 2,409	$ 2,621	$ 2,409	$ 2,621