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CONVERTIBLE NOTE (Tables)
 9 Months Ended
Sep. 30, 2016
CONVERTIBLE NOTE [Abstract]  
Convertible Note
The net carrying amount of the Liability Component is as follows (in thousands):

  
September 30, 2016
 
    
Principal 
 
$
210,000
 
Unamortized debt discount (conversion option) 
  
(10,231
)
Total long-term debt, net 
  
199,769
 
Unamortized debt discount (issuance costs) 
  
(5,854
)
Net carrying amount 
 
$
193,915