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Convertible Senior Notes (Tables)
9 Months Ended
Sep. 30, 2020
Debt Disclosure [Abstract]  
Convertible Debt Balances
The Notes consisted of the following balances reported in the Condensed Consolidated Balance Sheets as of September 30, 2020:
September 30,
2020
(In thousands)
Liability:
Principal amount$575,000 
Unamortized discount(100,261)
Unamortized debt issuance costs(12,624)
Convertible senior notes, liability component$462,115 
Equity:
Embedded conversion option$100,510 
Debt issuance costs(2,680)
Deferred tax impact(25,098)
Convertible senior notes, equity component (1)
$72,732 
_________________________________________________
(1)    Included in additional paid-in capital in the Condensed Consolidated Balance Sheets.
Summary of the Components of Interest Expense
The following table summarizes the components of interest expense resulting from the Notes recognized in interest and other income (expense), net in the Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2020:
Three and Nine Months Ended
September 30,
2020
(In thousands)
Contractual coupon interest$20 
Amortization of discount$249 
Amortization of debt issuance costs$31