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Product Warranty Reserve (Tables)
9 Months Ended
Sep. 30, 2016
Guarantees [Abstract]  
Roll Forward of Product Warranty Reserve

The following is a rollforward of the product warranty reserve:

 

     Nine Months Ended September 30  
     2016      2015  

Beginning of period balance

   $ 714       $ 892   

Additions charged to income

     423         17   

Warranty usage

     (59      (139

Currency translation

     (21      (108
  

 

 

    

 

 

 

End of period balance

   $ 1,057       $ 662