Revenue Recognition - Summary of Contract Liabilities Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Jul. 31, 2020	Oct. 31, 2019
Contract Liability Activity
Beginning Balance	$ 26,520	$ 28,235
Revenue deferred in current year	18,300	2,007
Deferred revenue recognized	(15,590)	(2,982)
Foreign currency translation	33	104
Ending balance	$ 26,520	$ 28,235	$ 29,263	$ 26,520	$ 27,364
Contract liabilities included in Other long-term liabilities			(809)		(384)
Deferred revenue			$ 28,454	$ 26,223	$ 26,980