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Debt - Liability for Sale of Future Royalties (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jul. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Debt Disclosure [Abstract]      
Proceeds from sale of future royalties $ 650,000   $ 650,000
Beginning balance   $ 679,762  
Less: Non-cash royalty revenue payable to RPI   (23,460)  
Plus: non-cash interest expense recognized   77,683  
Ending balance   $ 733,985 $ 679,762
Effective interest rate of the liability component 11.00% 10.90%