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Collaborations and Other Arrangements (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Mar. 21, 2021
USD ($)
Feb. 01, 2021
USD ($)
item
Mar. 31, 2024
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2020
USD ($)
Oct. 31, 2018
USD ($)
item
Jan. 31, 2016
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Mar. 28, 2024
$ / shares
Dec. 31, 2023
USD ($)
Apr. 14, 2020
$ / shares
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
License Agreement Fee       $ 35,000                
Research and development               $ 28,470 $ 34,154      
Share Price | $ / shares                   $ 2.39   $ 14.82
Royalties due     $ 32,700         32,700     $ 38,400  
Milestone payments, amount     12,500                  
Vaccinex License Agreement                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Maximum aggregate milestone payments to be made $ 3,500                      
Aggregate amount payable for achievement of certain regulatory milestones low single digit royalties on global net sales of any approved licensed products $ 11,500                      
Collaboration Agreement                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
License Agreement Fee   $ 35,000                    
Collaboration Agreement | Anti-TIGIT Antibody and IL-2 cytokine                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Collaboration Agreement , Maximum Payments On Attainment Of Certain Sales Thresholds For Each Option Program       170,000                
Adimab Development and Option Agreement                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Minimum antibodies to be commercialized under commercialization option | item           1            
Technical milestone payments obligated to pay           $ 300            
Period for payment of nominal research maintenance fee           4 years            
Maximum aggregate milestone payments to be made           $ 13,000            
Maximum antibodies partially exercised under commercialization option | item           10            
Percentage of option fee to be paid on partial exercise of commercialization option           65.00%            
Maximum number of antibodies under for research option | item           10            
Minimum Number of Antibodies under Commercialization option | item           20            
Novartis Agreement                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Potential development milestones             $ 325,000          
Sales milestones             $ 200,000          
GSK Agreement                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Term of agreement         10 years              
Sales milestones         $ 485,000              
Additional clinical milestones eligible to receive         60,000              
Regulatory milestones eligible to receive         $ 155,000              
GSK Agreement | Surface                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Milestone payments earned       $ 30,000                
Junshi Biosciences                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Collaboration agreement, royalty on net sales for each exercised option, percentage   18.00%                    
Collaboration agreement, Maximum aggregate one-time payment for achievement of milestones, for each option program   $ 85,000                    
Maximum paid amount for co-development activities (per licensed compound)   $ 25,000                    
Research and development               2,100        
Undisclosed preclinical | item   2                    
Decrease in Research and Development Expenses for Release of Certain Liabilities               4,800        
Junshi Biosciences | Intangible assets, net and accrued and other current liabilities                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Accrued milestone payment     25,000         25,000        
Junshi Biosciences | Accrued and other current liabilities                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Co-development, regulatory and technology transfer costs     25,000         25,000        
Junshi Biosciences | Accounts payable                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Co-development, regulatory and technology transfer costs     $ 400         $ 400        
Junshi Biosciences | Toripalimab (LOQTORZI)                        
Collaborative Arrangements And Noncollaborative Arrangement Transactions                        
Collaboration Agreement, upfront amount paid   $ 150,000                    
Collaboration agreement, royalty on net sales, percentage   20.00%                    
Collaboration agreement, Maximum aggregate one-time payments for the achievement of various regulatory and sales milestones   $ 380,000