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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]      
Total Cost $ 79,165 $ 73,450  
Less: Accumulated depreciation (43,852) (37,576)  
Property and equipment, net of accumulated depreciation 35,313 35,874  
Depreciation expense 6,800 6,500 $ 6,800
Computers and equipment      
Property, Plant and Equipment [Line Items]      
Total Cost $ 7,210 6,768  
Computers and equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 5 years    
Computers and equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Computer software      
Property, Plant and Equipment [Line Items]      
Total Cost $ 6,643 5,377  
Computer software | Maximum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 5 years    
Computer software | Minimum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Furniture and fixtures      
Property, Plant and Equipment [Line Items]      
Total Cost $ 12,689 12,267  
Property, Plant and Equipment, Useful Life 7 years    
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Total Cost $ 52,623 $ 49,038  
Leasehold improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 14 years    
Leasehold improvements | Minimum      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 2 years