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Theravance Respiratory Company, LLC (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 21, 2020
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
item
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Theravance Respiratory Company, LLC            
Equity method investments   $ 45,086   $ 45,086   $ 12,750
TRC            
Theravance Respiratory Company, LLC            
Percentage of equity interest   85.00%   85.00%    
Percentage of economic interest 85.00%     85.00%    
Number of fiscal quarters | item       4    
Royalty payments   $ 30,200 $ 13,400 $ 68,700 $ 48,300  
Royalty expenses   200 $ 500 3,200 $ 1,200  
Unrealized gains   100   500    
Amount due   43,800   43,800    
Long-term asset   $ 45,100   $ 45,100