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Business Combinations - Summary of Aggregate Consideration Paid by Company and Allocation of Purchase Price (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 31, 2019
Jun. 30, 2018
Sep. 30, 2020
Dec. 31, 2019
Business Acquisition [Line Items]        
Goodwill     $ 11,631 $ 11,631
Oncimmune Limited        
Business Acquisition [Line Items]        
Cash $ 1,206      
Total fair value of consideration transferred 1,206   $ 1,200  
Deposit 6      
Inventory 14      
Property and equipment 241      
Purchase option 121      
Goodwill 827      
Accrued liabilities (3)      
Total $ 1,206      
Integrated Diagnostics, Inc        
Business Acquisition [Line Items]        
Cash   $ 8,000    
Preferred stock issued - 10,694,904 shares   7,987    
Contingent consideration   19,600    
Total fair value of consideration transferred   27,587    
Prepaid expenses and other assets   50    
Inventory   394    
Property and equipment   316    
Technology   16,900    
Goodwill   10,804    
Liabilities   (877)    
Total   $ 27,587