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Product Warranties (Tables)
9 Months Ended
Sep. 30, 2013
Guarantees [Abstract]  
Product Warranties

Product warranty activities were as follows:

 

     Nine Months Ended September 30,  
     2013     2012  

Balance at January 1

   $ 8,266      $ 8,315   

Provision for product warranties

     1,705        3,750   

Direct charges to warranty liability

     (3,142     (3,733

Foreign currency translation

     (97     505   
  

 

 

   

 

 

 

Balance at September 30

   $ 6,732      $ 8,837