Description of Business and Summary of Significant Accounting Policies - Property and Equipment, Net (Details)	12 Months Ended
	Dec. 31, 2019
Computer and network equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life, in years	3 years
Computer and network equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life, in years	5 years
Computer software
Property, Plant and Equipment [Line Items]
Useful life, in years	3 years
Development costs | Minimum
Property, Plant and Equipment [Line Items]
Useful life, in years	1 year
Development costs | Maximum
Property, Plant and Equipment [Line Items]
Useful life, in years	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life, in years	7 years