Warranty Costs (Tables)

3 Months Ended

Mar. 31, 2018

Notes To Financial Statements [Abstract]

Product Warranty Table Disclosure

A rollforward of the warranty reserve is as follows:

	Three Months Ended
	Mar 31, 2018
	(in thousands)
Balance as of December 30, 2017	$	52,834
Warranty reserve related to acquisitions	69
Warranty expense	14,488
Warranty claims	(13,322		)
Balance as of March 31, 2018	$	54,069