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Product Warranties (Tables)
3 Months Ended
Mar. 31, 2014
Guarantees [Abstract]  
Product Warranty Activities

Product warranty activities were as follows:

 

     Three Months Ended March 31,  
     2014     2013  

Balance at December 31

   $ 6,956      $ 8,266   

Provision for product warranties

     704        630   

Direct charges to warranty liability

     (656     (1,250

Foreign currency translation

     9        (113
  

 

 

   

 

 

 

Balance at March 31

   $ 7,013      $ 7,533