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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
Changes in Carrying Value of Goodwill

The changes in the carrying value of goodwill were as follows (in thousands):

 

     MVSD     SISD     Consolidated  

Balance as of December 31, 2011

    $ 77,556      $ 4,473      $ 82,029   

Foreign currency exchange rate changes

      (168 )      (172 )      (340 ) 
  

 

 

    

 

 

    

 

 

  

Balance as of December 31, 2012

      77,388        4,301        81,689   

Foreign currency exchange rate changes

      -        -        -   
  

 

 

    

 

 

    

 

 

  

Balance as of December 31, 2013

    $ 77,388      $ 4,301      $ 81,689