Summary of Changes in Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Purchase of convertible preferred stock			$ 1,051	$ 4,000
Equity in the net loss of investee	$ (765)	$ (528)	(2,208)	(528)
Equity Method Investee [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance, beginning of period	2,509		2,901
Purchase of convertible preferred stock		4,000	1,051	4,000
Equity in the net loss of investee	(583)	(386)	(1,662)	(386)
Amortization of equity method basis difference	(182)	(142)	(546)	(142)
Balance, end of the period	$ 1,744	$ 3,472	$ 1,744	$ 3,472