Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Accounting Policies [Abstract]
Accrued payroll and related expenses	$ 74,505	$ 49,082
Advanced customer deposits	41,735	57,595
Accrued customer rebates	49,923	45,154
Accrued warranty	40,851	37,901
Accrued Professional Fees, Current	16,605	7,019
Accrued sales and other tax	11,417	11,635
midd_AccruedProductRecall	7,003	7,786
Accrued agent commission	12,834	9,948
Accured Restructuring Liabilities, Current	2,295	20,423
Restructuring Charges	10,524	28,754	$ 7,078
Sales and Excise Tax Payable, Current	13,565	13,537
Other accrued expenses	64,872	60,148
Accrued expenses	$ 335,605	$ 320,228