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Long-Term Debt (Tables)
 9 Months Ended
Sep. 30, 2019
Debt Disclosure [Abstract]  
Schedule of Debt
Long-term debt is summarized as follows:
 
 
September 30, 2019
 
December 31, 2018
Principal amount of 4.50% exchangeable senior notes due 2023
 
$
143,750

 
$
143,750

Less: debt discount and issuance costs, net
 
(23,618
)
 
(28,059
)
Net carrying amount of liability component
 
120,132

 
115,691

Other debt
 
35

 
149

     Subtotal
 
120,167

 
115,840

Less: current maturities
 
(35
)
 
(106
)
     Long-term debt
 
$
120,132

 
$
115,734

 
 
 
 
 
Equity component:
 
 
 
 
Equity component of exchangeable notes, net of issuance costs
 
$
(26,699
)
 
$
(26,699
)