Deferred Revenue and Customer Advances (Tables)

3 Months Ended

Apr. 01, 2018

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 on the balance sheet:

	April 1, 2018		December 31, 2017
	(in thousands)
Maintenance and training	$	59,365	$	57,256
Extended warranty		24,590		24,438
Customer advances, undelivered elements and other		23,663		32,047
Total deferred revenue and customer advances	$	107,618	$	113,741