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Severance Charges (Tables)
 12 Months Ended
Dec. 31, 2013
Restructuring And Related Activities [Abstract]  
A Summary of Activity Related to Severance Charges

A summary of the activity related to the severance charges, by segment, is as follows (in thousands):

 

     BBU     VI Chip     Total  

Balance as of December 31, 2012

    $ —       $ —       $ —    

Charges

      1,123       238       1,361  

Payments

      (1,074 )      (238 )      (1,312 ) 
  

 

 

    

 

 

    

 

 

  

Balance as of December 31, 2013

    $ 49     $ —       $ 49