Annual report pursuant to Section 13 and 15(d)

Property and Equipment, net - (Details)

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Property and Equipment, net - (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Less: Accumulated depreciation $ (4,497) $ (4,600)
Property and equipment, net 1,526 4,152
Depreciation 2,800 4,600
Loss on disposal of property and equipment 200 3,400
Computer hardware, software, and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,438 5,009
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 1,354 1,354
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 2,231 $ 2,389