Supplemental Cash Flow Information- Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Supplemental Cash Flow Elements [Abstract]
Interest paid	$ 2.7	$ 2.7	$ 1.6
Income taxes paid	24.0	23.5	10.9
Non-cash capital expenditures	$ 1.7	$ 1.8	$ 1.4