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Commitment and Contingencies - Narrative (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Nov. 30, 2021
May 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Loss Contingencies [Line Items]        
Rent expense     $ 900 $ 600
Period for royalties to begin 18 months      
Purchase obligation, due in next twelve months     3,700  
Purchase obligation, due in second year     $ 6,000  
Annual increase in purchase commitments     15.00%  
AHN Collaboration        
Loss Contingencies [Line Items]        
Collaboration agreement, collaboration expenses     $ 300  
Minimum | Licensing Agreements        
Loss Contingencies [Line Items]        
Royalty obligation, percent of net sales     1.50%  
Maximum | Licensing Agreements        
Loss Contingencies [Line Items]        
Royalty obligation, percent of net sales     7.00%  
Prometheus Laboratories        
Loss Contingencies [Line Items]        
Payments to acquire intellectual property     $ 100  
Future minimum royalty commitment     1,200  
Advance royalties payment     $ 100  
Prometheus Laboratories | Minimum        
Loss Contingencies [Line Items]        
Royalty obligation, percent of net sales     2.50%  
Allegheny Health Network Research Institute        
Loss Contingencies [Line Items]        
Collaboration fee   $ 400    
Allegheny Health Network Research Institute | Licensing Agreements        
Loss Contingencies [Line Items]        
Initial license fee   $ 400    
Queen Mary University Of London | Licensing Agreements        
Loss Contingencies [Line Items]        
Initial license fee $ 400      
One time payment $ 100      
Office and Laboratory        
Loss Contingencies [Line Items]        
Operating leases, renewal term     5 years  
Office        
Loss Contingencies [Line Items]        
Operating leases, renewal term     5 years