Profit Sharing and 401(K) Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Profit Sharing and 401 (k) Plan [Abstract]
Employee compensation deferral (in hundredths)	50.00%
Employer contributions	$ 4.6	$ 4.2	$ 3.7