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Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Property and Equipment (Details)
12 Months Ended
Dec. 31, 2019
Capitalized Equipment  
Property Plant And Equipment [Line Items]  
Estimated Useful Life 3 years
Capitalized Software  
Property Plant And Equipment [Line Items]  
Estimated Useful Life 3 years
Capitalized Website Development Costs  
Property Plant And Equipment [Line Items]  
Estimated Useful Life 3 years
Furniture and Fixtures  
Property Plant And Equipment [Line Items]  
Estimated Useful Life 5 years
Leasehold Improvements  
Property Plant And Equipment [Line Items]  
Estimated Useful Life Lesser of asset life or lease term