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Restructuring, Impairment and Costs of Terminated Program, and Impairment of Goodwill - Summary of Restructuring Costs (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]    
Clinical trial expense, other third-party and employee costs for the wind down of the bempegaldesleukin program $ 0 $ 1,598
Severance and benefit expense 0 5,483
Impairment of other property, plant and equipment 0 13,200
Contract termination and other restructuring costs 975 912
Restructuring, impairment and other costs of terminated program $ 975 $ 21,193