Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Useful Life (Details)

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Summary of Significant Accounting Policies - Useful Life (Details)
12 Months Ended
Dec. 31, 2021
Minimum  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 3 years
Minimum | Computer hardware  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 3 years
Minimum | Furniture, fixtures and equipment  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 5 years
Minimum | Leasehold improvements  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 5 years
Maximum  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 7 years
Maximum | Computer hardware  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 4 years
Maximum | Furniture, fixtures and equipment  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 7 years
Maximum | Leasehold improvements  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Useful life 10 years