Segment Information - Additional information (Details) $ in Thousands	3 Months Ended
	Oct. 31, 2020 Segment	Oct. 31, 2021 USD ($)	Jul. 31, 2021 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | Segment	1
Long-lived assets		$ 120,596	$ 131,621
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		$ 78,081	$ 86,468