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Sales of Future Royalties - Narrative (Details) - Royalties
3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Alexion | Option and License agreement    
Sales of Future Royalties [Line Items]    
Non-cash revenue recognized $ 13,800,000 $ 26,400,000
Deferred revenue   0.211
Alexion | Collaboration and License Agreement    
Sales of Future Royalties [Line Items]    
Non-cash interest expense recognized 8,400,000 17,000,000.0
MorphoSys | Collaboration and License Agreement    
Sales of Future Royalties [Line Items]    
Non-cash revenue recognized $ 1,600,000 $ 4,400,000
Interest rate 17.50% 17.50%
Non-cash interest expense recognized $ 800,000 $ 1,900,000