
9.	Warranty

We record a liability for warranty claims at the time of sale. The amount of the liability is based on the trend in the historical ratio of claims to sales, the historical length of time between the sale and resulting warranty claim, new product introductions and other factors. Warranty terms on machines generally range from one to four years. However, the majority of our claims are paid out within the first six to nine months following a sale. The majority of the liability for estimated warranty claims represents amounts to be paid out in the near term for qualified warranty issues, with immaterial amounts reserved to be paid for older equipment warranty issues.

The changes in warranty reserves for the six months ended June 30, 2018 and 2017 were as follows:



	Six Months Ended
	June 30
	2018			2017
Beginning balance	$	12,676		$	10,960
Additions charged to expense	7,227			5,815
Acquired warranty obligations	—			384
Foreign currency fluctuations	(153		)	154
Claims paid	(6,491		)	(5,872		)
Ending balance	$	13,259		$	11,441