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Convertible Senior Notes - Change in Fair Value of Embedded Conversion Derivative (Details) - Convertible Debt - 2026 Notes - Embedded conversion derivative - USD ($)
$ in Thousands
2 Months Ended 3 Months Ended
Mar. 31, 2021
Jun. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance $ 33,192 $ 34,719
Change in fair value 1,527 $ 19,615
Ending Balance $ 34,719