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Long Term Debt (Tables)
9 Months Ended
Sep. 30, 2020
Debt Disclosure [Abstract]  
Components of Convertible Senior Notes
The Convertible Senior Notes consist of the following components:
(In thousands)September 30, 2020September 30, 2019
Liability component
Principal$500,000 $— 
Unamortized debt discount(84,127)— 
Unamortized issuance costs(9,123)— 
Net carrying amount$406,750 $— 
Equity component, net of issuance costs$88,672 $— 
Schedule of Interest Expense Related to Convertible Senior Notes
Interest expense related to the Convertible Senior Notes consists of the following as of the periods indicated:
Three months ended September 30,Nine months ended September 30,
(In thousands)2020201920202019
Coupon interest$1,875 $— $2,500 $— 
Non-cash amortization of debt discount5,040 — 6,720 — 
Amortization of deferred financing costs622 — 829 — 
Convertible senior notes interest expense$7,537$0$10,049$0