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Debt - Summary of Long Term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Instruments    
Net carrying value of Long-term debt $ 389,357 $ 389,254
Convertible Notes | Senior Secured Term Loan due 2026:    
Debt Instruments    
Principal 400,000 400,000
Less: debt discount (6,074) (7,434)
Less: deferred financing (4,569) (5,592)
Net carrying value of Long-term debt 389,357 386,974
Convertible Notes | 2016 Convertible Notes    
Debt Instruments    
Principal 0 2,825
Less: debt discount 0 (518)
Less: deferred financing 0 (27)
Net carrying value of Long-term debt $ 0 $ 2,280