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Long Term Debt - Components of Convertible Senior Notes (Details) - 1.50% Convertible Senior Notes - USD ($)
$ in Thousands
Jun. 30, 2020
Jun. 30, 2019
May 01, 2019
Debt Instrument [Line Items]      
Principal $ 500,000 $ 0  
Unamortized debt discount (92,777) 0  
Unamortized issuance costs (9,611) 0 $ (9,700)
Long-term Debt, Total 397,612 0  
Equity component, net of issuance costs $ 92,253 $ 0