Warranty Liability - Narratives (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2019	Dec. 31, 2018	Sep. 29, 2018	Dec. 31, 2017
Product Warranty Liability
Accrued warranty liability	$ 46,812	$ 46,468	$ 47,114	$ 46,256
North America
Product Warranty Liability
Accrued warranty liability	41,800
Product warranty, discount adjustment	$ 3,000
Minimum
Product Warranty Liability
Product warranty, term	1 year
Minimum | North America
Product Warranty Liability
Product warranty discount rate (percentage)	0.76%
Maximum
Product Warranty Liability
Product warranty, term	10 years
Maximum | North America
Product Warranty Liability
Product warranty discount rate (percentage)	4.75%