v3.26.1
Fair Value Measurements and Financial Instruments - Summary of Change in Carrying Value of Level 3 Financial Instruments (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
MorphoSys          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Collaborative arrangement, funded amount $ 300,000        
Equity Securities | Level 3          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Balance at the beginning of the period 2,241   $ 2,241   $ 2,241
Balance at the end of the period     2,241   2,241
Debt Securities | Level 3          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Balance at the beginning of the period 751,700 $ 428,700 231,100 $ 437,800 751,700
Purchases     75,000   75,000
Changes in fair value, asset   (27,280) (18,120) (32,060) (15,581)
Sales         (510,553)
Redemptions, asset   (4,320) (2,880) (8,640) (15,466)
Balance at the end of the period   397,100 285,100 397,100 285,100
Funding Commitments | Level 3          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Balance at the beginning of the period (12,080) (11,000) (17,900) (9,100) (12,080)
Changes in fair value, liability   (7,600) (10,200) (9,500) (15,920)
Settlement of forward     900   800
Redemptions, liability   0   0  
Balance at the end of the period   $ (18,600) (27,200) $ (18,600) (27,200)
Royalty at Fair Value | Level 3          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Balance at the beginning of the period $ 5,323   5,323   5,323
Balance at the end of the period     $ 5,323   $ 5,323