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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Property and Equipment    
Property and equipment, gross $ 30,650 $ 44,711
Less: accumulated depreciation (21,582) (32,836)
Property and equipment, net 9,068 11,875
Depreciation expense 1,900 2,600
Carry value [1] 40,621 63,392
Proceeds from the sale of property and equipment 1,513 1,866
Non-cash loss 1,200  
Computer equipment    
Property and Equipment    
Property and equipment, gross 1,883 1,921
Software    
Property and Equipment    
Property and equipment, gross 762 1,088
Furniture and fixtures    
Property and Equipment    
Property and equipment, gross 1,738 1,674
Laboratory equipment    
Property and Equipment    
Property and equipment, gross 60 15,445
Carry value 2,700  
Leasehold improvements    
Property and Equipment    
Property and equipment, gross 26,207 $ 24,583
Property and equipment    
Property and Equipment    
Proceeds from the sale of property and equipment $ 1,500  
[1] Amounts include share-based compensation expense as follows: