Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019
Accrued Expenses [Line Items]
Accrued payroll and related expenses	$ 93,926	$ 80,621
Contract liabilities	93,871	74,511
Accrued warranty	69,667	66,374
Accrued customer rebates	43,703	51,709
Accrued liabilities held for sale	22,313	0
Accrued sales and other tax	22,030	19,862
Accrued interest rate swaps	14,075	0
Accrued product liability and workers compensation	12,909	15,164
Accrued professional fees	12,133	13,368
Accrued agent commission	11,105	13,816
Accrued restructuring	2,686	1,121
Other accrued expenses	73,630	58,177
Accrued expenses	494,541	416,550
Accrued Liabilities
Accrued Expenses [Line Items]
Accrued short-term leases	$ 22,493	$ 21,827