Property and Equipment, net (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Aug. 01, 2020
Property, Plant and Equipment [Line Items]
Property and equipment	$ 165,549	$ 123,786
Less: accumulated depreciation and amortization	(78,590)	(53,417)
Property and equipment, net	86,959	70,369
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment	7,637	5,967
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	37,454	26,695
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	44,118	37,570
Capitalized software
Property, Plant and Equipment [Line Items]
Property and equipment	66,656	47,151
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment	9,254	5,973
Building and land
Property, Plant and Equipment [Line Items]
Property and equipment	$ 430	$ 430