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Indebtedness - Schedule of Equity Components (Details) - 2027 Notes - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Debt discount related to the value of conversion option $ 53,635 $ 0
Debt issuance cost (109) 0
Net carrying amount $ 53,526 $ 0