Schedule of Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Other Income and Expenses [Abstract]
Foreign currency transaction (losses) gains	$ (1,069)	$ (774)	$ 396	$ 175
Equity in the net loss of investee	(528)		(528)
Write-off of tax assets related to prior periods		(129)		(742)
Gain (loss) on investments	5,435	(1,226)	5,822	(817)
Other	(23)	(15)	(82)	24
Total other income (expense), net	$ 3,815	$ (2,144)	$ 5,608	$ (1,360)