Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Disclosure Accrued Expenses [Abstract]
Contract liabilities	$ 102,564	$ 74,511
Accrued payroll and related expenses	71,062	81,541
Accrued warranty	64,422	66,374
Accrued customer rebates	24,162	51,709
Accrued short-term leases	23,274	21,827
Accrued Product Liability And Workers Compensation Liability Current	14,814	15,164
Accrued agent commission	11,904	13,816
Accrued agent commission	11,848	19,862
Accrued professional services	10,451	13,368
Other accrued expenses	59,074	58,378
Accrued expenses	$ 393,575	$ 416,550