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License and Collaboration Agreement - Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Deferred revenue - related party    
Balance at Beginning of Period $ 1,601  
Balance at End of Period 768  
Payable to collaboration partner - related party    
Balance at Beginning of Period 899  
Balance at End of Period 380  
Janssen | License and Collaboration Agreement    
Receivable from collaboration partner - related party    
Balance at Beginning of Period 1,566 $ 2,426
Additions 25,150 1,570
Deductions (1,566)  
Balance at End of Period 25,150 3,996
Deferred revenue - related party    
Balance at Beginning of Period 1,601 14,477
Additions 25,658 1,017
Deductions (26,491) (9,726)
Balance at End of Period 768 5,768
Payable to collaboration partner - related party    
Balance at Beginning of Period 899 2,732
Additions 330 4,091
Deductions (849)  
Balance at End of Period $ 380 $ 6,823