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Convertible Senior Notes - Redemption of Convertible Senior Notes Due 2022 (Details) - USD ($)
$ in Thousands, shares in Millions
1 Months Ended 3 Months Ended
Mar. 31, 2021
Mar. 31, 2021
Mar. 31, 2020
Convertible Senior Notes      
Loss on extinguishment of debt   $ 11,459 $ 0
2022 Notes      
Convertible Senior Notes      
Cash exchanged, redemption of convertible notes $ 100    
Shares exchanged, redemption of convertible debt 1.1    
Loss on extinguishment of debt   $ 3,300