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Convertible Debentures and Credit Arrangements (Tables)
12 Months Ended
Dec. 31, 2012
Convertible Senior Debentures

The carrying values of the Company’s convertible senior debentures were as follows:

 

     As of December 31,  
     2012      2011  
     (In thousands)  

Convertible senior debentures due 2018

   $ 48,483       $ —      

Convertible senior debentures due 2014

     67         45,253   

Convertible senior debentures due 2024

     441         441   
  

 

 

    

 

 

 

Convertible senior debentures—non-current

   $ 48,991       $ 45,694