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Debt (Tables)
3 Months Ended
Apr. 02, 2017
Components of Convertible Senior Notes

The below tables represent the key components of Teradyne’s convertible senior notes:

 

     April 2,
2017
     December 31,
2016
 
     (in thousands)  

Debt Principal

   $ 460,000      $ 460,000  

Unamortized discount

     104,063        107,331  
  

 

 

    

 

 

 

Net Carrying amount of convertible debt

   $ 355,937      $ 352,669  
  

 

 

    

 

 

 

 

     For the Three Months
Ended
 
     April 2, 2017  
     (in thousands)  

Contractual interest expense on the coupon

   $ 1,438  

Amortization of the discount component and debt issue fees recognized as interest expense

     3,268  
  

 

 

 

Total interest expense on the convertible debt

   $ 4,706