Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Disclosure Accrued Expenses [Abstract]
Accrued payroll and related expenses	$ 74,440	$ 74,952
Accrued warranty	61,621	59,451
Contract liabilities	58,475	57,913
Accrued customer rebates	24,750	45,740
Accrued short-term leases	20,884	0
Accrued Product Liability And Workers Compensation Liability Current	16,164	16,284
Accrued professional services	15,570	17,313
Accrued sales and other tax	13,632	19,452
Accrued agent commission	12,211	11,969
Other accrued expenses	65,882	64,372
Accrued expenses	$ 363,629	$ 367,446