Equity Investments (Details) - Schedule of carrying value of equity investments - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Schedule of carrying value of equity investments [Abstract]
Balance, beginning of period	$ 2,109	$ 3,937	$ 4,109	$ 3,919
Redemption for Visa mandatory release assessment			(1,870)
Adjustment for observable transactions involving a similar investment from the same issuer	114	408	(16)	426
Impairments
Balance, end of the period	$ 2,223	$ 4,345	$ 2,223	$ 4,345