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Product Warranty Reserve (Tables)
6 Months Ended
Jun. 30, 2019
Guarantees [Abstract]  
Roll Forward of Product Warranty Reserve

The following is a rollforward of the product warranty reserve:

 

 

 

Six Months Ended June 30

 

 

 

2019

 

 

2018

 

Beginning of period balance

 

$

928

 

 

$

1,076

 

Additions charged to income

 

 

506

 

 

 

14

 

Warranty usage

 

 

(5

)

 

 

(143

)

Currency translation

 

 

1

 

 

 

(68

)

End of period balance

 

$

1,430

 

 

$

879