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Fair Value Measurements - Hierarchy (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Level 1    
Fair value assets and liabilities    
Fair value money market accounts $ 189,569 $ 228,584
Recurring    
Fair value assets and liabilities    
Derivative liabilities 1,891  
Recurring | Equity Investment Rights    
Fair value assets and liabilities    
Derivative liabilities 1,281  
Recurring | OnkosXcel Warrants    
Fair value assets and liabilities    
Derivative liabilities 610  
Recurring | Level 3    
Fair value assets and liabilities    
Derivative liabilities 1,891  
Recurring | Level 3 | Equity Investment Rights    
Fair value assets and liabilities    
Derivative liabilities 1,281  
Recurring | Level 3 | OnkosXcel Warrants    
Fair value assets and liabilities    
Derivative liabilities 610  
Recurring | Fair Value    
Fair value assets and liabilities    
Derivative liabilities 1,891  
Recurring | Fair Value | Equity Investment Rights    
Fair value assets and liabilities    
Derivative liabilities 1,281  
Recurring | Fair Value | OnkosXcel Warrants    
Fair value assets and liabilities    
Derivative liabilities $ 610