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Convertible Senior Notes and Related Transactions - Components of Debt (Details)
$ in Thousands
Aug. 03, 2019
USD ($)
Debt Disclosure [Abstract]  
Principal $ 300,000
Unamortized debt discount (53,913)
Unamortized issuance costs (4,032)
Net carrying amount 242,055
Equity component, net $ 42,324