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Basis of Presentation and Summary of Significant Accounting Policies - Estimated Useful Lives (Details)
12 Months Ended
Dec. 31, 2021
Furniture, fixtures and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Property and equipment useful lives 3 years
Furniture, fixtures and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Property and equipment useful lives 5 years
Internal-use computer software | Minimum  
Property, Plant and Equipment [Line Items]  
Property and equipment useful lives 1 year 6 months
Internal-use computer software | Maximum  
Property, Plant and Equipment [Line Items]  
Property and equipment useful lives 5 years
Computer software, including internal-use software  
Property, Plant and Equipment [Line Items]  
Property and equipment useful lives 3 years