Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation	$ (131,250)	$ (114,191)
Total property and equipment, net	225,222	185,242
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	108,433	81,556
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	174,196	130,852
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	27,452	14,428
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	38,900	33,869
Construction in process
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,491	$ 38,728