Equity Investments (Details) - Schedule of carrying value of equity investments - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Schedule of carrying value of equity investments [Abstract]
Balance, beginning of period	$ 4,109	$ 3,919
Redemption for Visa mandatory release assessment	(1,870)
Adjustment for observable transactions involving a similar investment from the same issuer	(130)	18
Impairments
Balance, end of the period	$ 2,109	$ 3,937