Summary of Significant Accounting Policies - Summary of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
Computer equipment
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	3 years
Office equipment
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	5 years
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	7 years
Minimum | Software, including internal-use software
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	1 year
Maximum | Software, including internal-use software
Property, Plant and Equipment [Line Items]
Useful life of property and equipment	5 years