Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Accounting Policies [Abstract]
Accrued payroll and related expenses	$ 65,623	$ 50,844
Advanced customer deposits	57,595	20,367
Accrued customer rebates	45,154	32,357
Accrued warranty	37,901	28,786
Accrued product liability and workers compensation	11,635	14,582
midd_AccruedProductRecall	7,786	12,125
Accrued agent commission	9,948	11,207
Business Combination, Contingent Consideration	7,019	7,053
Accured Restructuring Liabilities, Current	6,266	37
Restructuring Charges	28,754	7,078	$ 9,101
Sales and Excise Tax Payable, Current	13,537	7,660
Other accrued expenses	57,690	35,567
Accrued expenses	$ 320,154	$ 220,585