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Product Warranty Reserve (Tables)
6 Months Ended
Jun. 30, 2017
Guarantees [Abstract]  
Roll Forward of Product Warranty Reserve

The following is a rollforward of the product warranty reserve:

 

 

 

Six Months Ended June 30

 

 

 

2017

 

 

2016

 

Beginning of period balance

 

$

1,058

 

 

$

714

 

Additions charged to income

 

 

198

 

 

 

310

 

Warranty usage

 

 

(118

)

 

 

(28

)

Currency translation

 

 

63

 

 

 

(18

)

End of period balance

 

$

1,201

 

 

$

978