XML 57 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1
Debt (Tables)
12 Months Ended
Dec. 31, 2017
Components of Convertible Senior Notes

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

 

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

Debt Principal

   $ 460,000      $ 460,000  

Unamortized discount

     94,013        107,331  
  

 

 

    

 

 

 

Net Carrying amount of convertible debt

   $ 365,987      $ 352,669  
  

 

 

    

 

 

 

 

     For the year ended  
     December 31,
2017
     December 31,
2016
 
     (in thousands)      (in thousands)  

Contractual interest expense on the coupon

   $ 5,734      $ 303  

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

     13,318        688  
  

 

 

    

 

 

 

Total interest expense on the convertible debt

   $ 19,052      $ 991