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Product Warranties (Tables)
9 Months Ended
Sep. 30, 2014
Guarantees [Abstract]  
Product Warranty Activities

Product warranty activities were as follows:

 

     Nine Months Ended September 30,  
     2014     2013  

Beginning of period

   $ 6,956      $ 8,266   

Provision for product warranties

     1,880        1,705   

Direct charges to warranty liability

     (2,119     (3,142

Foreign currency translation

     (28     (97
  

 

 

   

 

 

 

End of period

   $ 6,689      $ 6,732