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Long-Term Debt (Tables)
9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]  
Schedule of Debt
Long-Term debt is summarized as follows:
 
 
September 30, 2018
 
December 31, 2017
Principal amount of 4.50% exchangeable senior notes due 2023
 
$
143,750

 
$

Less: debt discount and issuance costs, net
 
(29,487
)
 

Net carrying amount of liability component
 
114,263

 

Other debt
 
226

 
267

     Subtotal
 
114,489

 
267

Less: current maturities
 
(107
)
 
(111
)
     Long-term debt
 
$
114,382

 
$
156

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