The Company and Summary of Significant Accounting Policies and Estimates (Property and Equipment Useful Lives) (Details)	3 Months Ended
	Oct. 31, 2020
Computer hardware
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Purchased software
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Equipment and machinery | Minimum
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Equipment and machinery | Maximum
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Life	5 years