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Product Warranties (Tables)
3 Months Ended
Mar. 31, 2015
Guarantees [Abstract]  
Product Warranty Activities

Product warranty activities were as follows:

 

     Three Months Ended March 31,  
     2015      2014  

Beginning of period

   $ 6,266       $ 6,956   

Provision for product warranties

     1,109         704   

Direct charges to warranty liability

     (1,244      (656

Foreign currency translation

     (67      9   
  

 

 

    

 

 

 

End of period

$ 6,064    $ 7,013