
8.	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.

The changes in warranty reserves for the three months ended March 31, 2013 and 2012 were as follows:



	Three Months Ended
	March 31
	2013			2012
Beginning balance	$	9,357		$	8,759
Additions charged to expense	2,300			2,927
Foreign currency fluctuations	(81		)	53
Claims paid	(2,455		)	(2,929		)
Ending balance	$	9,121		$	8,810