Stock Plans (Weighted-Average Assumptions Used in the Black-Scholes Option Pricing Model) (Details)	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate	1.30%	1.50%	0.90%
Expected dividend yield	0.60%	0.70%	0.80%
Expected lives, years	5 years	5 years	5 years
Expected stock volatility	26.50%	30.90%	38.50%