Deferred Revenue and Customer Advances (Tables)

9 Months Ended

Sep. 29, 2013

Deferred Revenue and Customer Advances

Deferred revenue and customer advances consist of the following and are included in short and long-term deferred revenue and customer advances.

	September 29, 2013		December 31, 2012
	(in thousands)
Maintenance, training and extended warranty	$	56,481	$	51,198
Customer advances		22,287		39,613
Undelivered elements		9,054		6,773
Total deferred revenue and customer advances	$	87,822	$	97,584