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Restructuring, Impairment and Other Costs of Terminated Program - Summary of Restructuring Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Restructuring and Related Activities [Abstract]      
Clinical trial expense, other third-party and employee costs for the wind down of the bempegaldesleukin program $ 8,530 $ 28,938  
Severance and benefit expense 2,077 29,827  
Impairment of right-of-use assets and property, plant and equipment 1,200 58,521 $ 0
Contract termination and other restructuring costs 5,023 7,064  
Restructuring, impairment and other costs of terminated program $ 16,830 $ 124,350