Quarterly report pursuant to Section 13 or 15(d)

Long-term Debt - Summary of Components of Convertible Notes (Details)

v3.20.2
Long-term Debt - Summary of Components of Convertible Notes (Details) - 4.125% Convertible senior notes due september 1, 2022 - Convertible senior notes - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Principal $ 294,000,000 $ 150,000,000
Accrued interest 1,000,000 2,000,000
Less: Unamortized financing costs (6,000,000) (3,000,000)
Carrying value of convertible notes $ 289,000,000 $ 149,000,000