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Product Warranties (Tables)
6 Months Ended
Jun. 30, 2013
Guarantees [Abstract]  
Product Warranty Activities

Product warranty activities were as follows:

 

     Six Months Ended June 30,  
     2013     2012  

Balance at January 1

   $ 8,266      $ 8,315   

Provision for product warranties

     1,251        2,886   

Direct charges to warranty liability

     (2,206     (2,475

Foreign currency translation

     (136     —     
  

 

 

   

 

 

 

Balance at June 30

   $ 7,175      $ 8,726