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Summary of Significant Accounting Policies - Fixed Assets are Carried at Cost Less Accumulated Depreciation (Detail)
12 Months Ended
Dec. 31, 2021
Furniture and fixtures  
Property, Plant and Equipment [Line Items]  
Fixed assets, useful life 7 years
Office equipment  
Property, Plant and Equipment [Line Items]  
Fixed assets, useful life 5 years
Vehicles  
Property, Plant and Equipment [Line Items]  
Fixed assets, useful life 5 years
Computer equipment  
Property, Plant and Equipment [Line Items]  
Fixed assets, useful life 3 years
Capitalized software  
Property, Plant and Equipment [Line Items]  
Fixed assets, useful life 3 years