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License Agreements - Additional Information (Details)
Oct. 19, 2020
USD ($)
Product
$ / shares
shares
Aug. 03, 2020
USD ($)
Product
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
shares
License Agreements [Line Items]        
Number of licensed products obliged to develop and commercialize | Product 1 1    
Upfront payment shares issued | shares     36,672,415 1,984,222
Upfront payment value     $ 4,000  
Mirati Therapeutics, Inc        
License Agreements [Line Items]        
Number of period the agreement in effect   10 years    
Mirati Therapeutics, Inc | Private Placement | Common Stock        
License Agreements [Line Items]        
Upfront payment shares issued | shares   588,235    
Upfront payment value   $ 13,000,000.0    
Issue price per share | $ / shares   $ 34.00    
Premium percentage   10.00%    
Stock transfer restrictions period   18 months    
Voronoi Inc. | Development And Regulatory Milestone        
License Agreements [Line Items]        
License agreement maximum milestone payment obligation to pay $ 111,000,000.0      
Voronoi Inc. | Commercial Milestone        
License Agreements [Line Items]        
License agreement maximum milestone payment obligation to pay 225,000,000.0      
Voronoi Inc. | Success Based Milestones        
License Agreements [Line Items]        
License agreement, additional milestone payment 272,000,000.0      
Voronoi Inc. | Private Placement        
License Agreements [Line Items]        
License agreement charge related to acquired assets 11,800,000      
License agreement cash payment related to acquired assets charge 5,000,000.0      
License agreement shares issued value related to acquired assets charge 6,800,000      
Voronoi Inc. | Private Placement | Acquired In-Process Research and Development Expense [Member]        
License Agreements [Line Items]        
License agreement cash payment related to acquired assets charge 5,000,000.0      
License agreement shares issued value related to acquired assets charge $ 6,800,000      
Voronoi Inc. | Private Placement | Common Stock        
License Agreements [Line Items]        
Upfront payment shares issued | shares 283,259      
Upfront payment value $ 6,800,000      
Issue price per share | $ / shares $ 28.24      
Premium percentage 25.00%      
Upfront cash payment $ 5,000,000.0