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

Product warranty activities were as follows:

 

     Six Months Ended June 30,  
     2014     2013  

Beginning of period

   $ 6,956      $ 8,266   

Provision for product warranties

     1,589        1,251   

Direct charges to warranty liability

     (1,476     (2,206

Foreign currency translation

     48        (136
  

 

 

   

 

 

 

End of period

   $ 7,117      $ 7,175