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Convertible Subordinated Notes (Tables)
 3 Months Ended
Mar. 31, 2020
Convertible Subordinated Notes [Abstract]  
Schedule of Liability and Equity Components of Convertible Subordinated Notes
The carrying values of the liability and equity components of our 2.75% convertible subordinated notes due 2021 (the “Convertible Notes”) at December 31, 2019 and March 31, 2020 are reflected on our Consolidated Balance Sheet as follows (in thousands):
 
December 31, 2019

 
March 31, 2020

Current liabilities:
 
 
 
Principal amount
$
6,319

 
$
6,319

Unamortized discount of liability component
(319
)
 
(254
)
Convertible Notes issuance costs, net of accumulated amortization of $130 and $136, respectively
(29
)
 
(23
)
Carrying value of the liability component
$
5,971

 
$
6,042

 
 
 
 
Carrying value of the equity component
$
789

 
$
789