Investments Investment Rollforward (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) years	Jan. 01, 2017 USD ($) years	Jan. 03, 2016 USD ($) years
Schedule of Equity Method Investments
Balance at beginning of period	$ 54,545
Distributions received	(11,713)	$ (11,426)	$ (12,451)
Foreign currency translation adjustment included in “Other comprehensive income (loss), net”	15,150	5,864	$ (37,800)
Balance at end of period	$ 55,363	$ 54,545
TimWen
Schedule of Equity Method Investments
Equity Method Investment, Purchase Price Adjustment, Amortization Period | years	21	21	21
TimWen and Brazil JV
Schedule of Equity Method Investments
Balance at beginning of period	$ 54,545	$ 55,541	$ 69,790
Investment	375	172	108
Equity in earnings for the period	9,897	10,627	11,533
Amortization of purchase price adjustments	(2,324)	(2,276)	(2,328)
Equity in Earnings, Net of Amortization of Purchase Price Adjustment	7,573	8,351	9,205
Distributions received	(11,713)	(11,426)	(12,451)
Foreign currency translation adjustment included in “Other comprehensive income (loss), net”	4,583	1,907	(11,111)
Balance at end of period	$ 55,363	$ 54,545	$ 55,541