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Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Dec. 19, 2019
Debt        
Principal $ 425,600   $ 50,831  
Unaccreted Discount (80)   (2,819)  
Debt Issuance Costs (10,785)   (29)  
Carrying Value 414,735   47,983  
Fair Value 400,400      
Interest rate (stated)       3.00%
Long-term Debt, Fiscal Year Maturity [Abstract]        
2022 150      
2023 150      
2024 150      
2025 150      
2026 $ 425,000      
1.0% promissory notes, due 2022        
Debt        
Principal     8,317  
Carrying Value     8,317  
Interest rate (stated) 1.00%      
11.05% term loan, due 2024        
Debt        
Principal     41,764  
Unaccreted Discount     (2,686)  
Debt Issuance Costs     (29)  
Carrying Value     39,049  
Interest rate (stated) 11.05%      
Convertible senior notes, due 2026        
Debt        
Principal $ 425,000      
Debt Issuance Costs (10,785)      
Carrying Value 414,215      
Interest rate (stated)   0.75%    
Other notes        
Debt        
Principal 600   750  
Unaccreted Discount (80)   (133)  
Carrying Value $ 520   $ 617