Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Accounting Policies [Abstract]
Accrued payroll and related expenses	$ 81,541	$ 74,952
Accrued warranty	66,374	59,451
Contract liabilities	74,511	57,913
Accrued customer rebates	51,709	45,740
Accrued sales and other tax	19,862	19,452
Accrued professional fees	13,368	17,313
Accrued product liability and workers compensation	15,164	16,284
Accrued agent commission	13,816	11,969
Accrued short-term leases	21,827	0
Other accrued expenses	58,378	64,372
Accrued expenses	$ 416,550	$ 367,446