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Warranty Obligations (Tables)
 9 Months Ended
Sep. 29, 2013
Guarantees [Abstract]  
Changes in Warranty Obligations

The changes in the warranty obligations were as follows (in thousands):

 

Balance as of December 31, 2012

    $ 2,256   

Provisions for warranties issued during the period

      2,027   

Fulfillment of warranty obligations

      (1,535 ) 

Foreign exchange rate changes

      64   
  

 

 

  

Balance as of September 29, 2013

    $ 2,812