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Debt (Tables)
9 Months Ended
Sep. 30, 2020
Debt Disclosure [Abstract]  
Schedule of Debt
The following table summarizes information about the equity and liability components of the Convertible Senior Notes (dollars in thousands). The fair values of the respective notes outstanding were measured based on quoted market prices and is a Level 2 measurement.
September 30,
2020
December 31,
2019
Principal amount outstanding$6,761 $13,131 
Unamortized discount of liability component(57)(415)
Unamortized debt issuance costs(8)(55)
Net carrying amount of liability component$6,696 $12,661 
Carrying value of equity component, net of issuance costs$1,166 $2,265 
Fair value of outstanding Convertible Senior Notes$41,570 $30,991 
Remaining amortization period of discount on the liability component0.3 years1.0 year