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Guarantees (Tables)
6 Months Ended
Jun. 30, 2019
Guarantees [Abstract]  
Changes in the carrying amount of service and product warranties
Changes in the carrying amount of service and product standard warranties for the six months ended June 30, are as follows:
 
2019
 
2018
Balance as of January 1,
$
1,798

 
$
1,750

 
 
 
 
Provision for warranties
1,020

 
678

Claims made
(696
)
 
(611
)
 
 
 


Balance as of June 30,
$
2,122

 
$
1,817