Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits	$ 4.5		$ 4.5		$ 2.7
Interest and penalties related to unrecognized tax benefits in noncurrent liabilities	1.2		1.2		$ 0.9
Unrecognized tax benefits, net tax offset	1.4		1.4
Amount, if recognized, that affects the effective tax rate	3.6		3.6
Reduction of unrecognized tax benefit amount	$ 0.7		$ 0.7
Effective tax rate percentage	37.60%	35.90%	35.40%	35.90%