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Product Warranties (Tables)
6 Months Ended
Jun. 30, 2015
Guarantees [Abstract]  
Product Warranty Activities

Product warranty activities were as follows:

 

     Six Months Ended June 30,  
     2015      2014  

Beginning of period

   $ 6,266       $ 6,956   

Provision for product warranties

     2,095         1,589   

Direct charges to warranty liability

     (2,434      (1,476

Foreign currency translation

     (51      48   
  

 

 

    

 

 

 

End of period

   $ 5,876       $ 7,117