The Company and Summary of Significant Accounting Policies - Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2020
Computer Equipment and Software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Computer Equipment and Software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Building and Building Improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	30 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Furniture and Fixtures and Vehicles
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years