Warranty Costs (Tables)

9 Months Ended

Sep. 30, 2017

Notes To Financial Statements [Abstract]

Product Warranty Table Disclosure

A rollforward of the warranty reserve is as follows:

	Nine Months Ended
	Sep 30, 2017
	(in thousands)
Balance as of December 31, 2016	$	40,851
Warranty reserve related to acquisitions	6,474
Warranty expense	41,699
Warranty claims	(38,926		)
Balance as of September 30, 2017	$	50,098