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Collaboration Agreements And Business Development Activities - Collaboration Revenues under the Collaboration Agreement with Ipsen (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 29, 2024
Mar. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Total revenues $ 425,226 $ 408,788
Collaborative Arrangement with Ipsen    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Total revenues 35,703 33,534
License revenues    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Total revenues 44,676 38,292
License revenues | Collaborative Arrangement with Ipsen    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Total revenues 36,861 29,812
Collaboration services revenues    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Total revenues 2,027 7,096
Collaboration services revenues | Collaborative Arrangement with Ipsen    
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]    
Total revenues $ (1,158) $ 3,722