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Summary of Significant Accounting Policies - Property and Equipment (Details)
1 Months Ended 12 Months Ended
Aug. 31, 2018
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Estimated useful life of assets 10 years  
Minimum    
Property, Plant and Equipment [Line Items]    
Estimated useful life of assets   3 years
Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful life of assets   40 years