Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Company's income (loss) before provision for income taxes
Income (loss) before provision for (benefit from) income taxes	$ (24,331)	$ 12,452	$ (8,276)
Domestic
Company's income (loss) before provision for income taxes
Income (loss) before provision for (benefit from) income taxes	(34,121)	(1,778)	(13,501)
International
Company's income (loss) before provision for income taxes
Income (loss) before provision for (benefit from) income taxes	$ 9,790	$ 14,230	$ 5,225