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Convertible Senior Notes (Tables)
9 Months Ended
Sep. 30, 2017
Carrying Value of Convertible Senior Notes

The carrying value of the Company’s convertible senior notes is as follows:

 

     September 30, 2017      December 31, 2016  

2.125% Convertible Senior Notes due 2021:

     

Principal amount

   $ 115,000      $ 115,000  

Unamortized debt discount

     (14,261      (16,777

Unamortized debt issuance costs

     (2,508      (2,951
  

 

 

    

 

 

 

Total convertible senior notes

   $ 98,231      $ 95,272