Share-Based Compensation Restricted Stock Units (Details) (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 22 days
Restricted Stock Units, Weighted Average Remaining Vest Period	1 year 7 months 6 days	1 year 9 months 18 days	2 years	2 years 4 months 24 days
Share-based Compensation Award, Restricted Stock Units, Vested in Period, Total Fair Value	$ 1,800,000	$ 1,200,000
Share-based Compensation Award, Restricted Stock Units Unvested, Number	348,163	346,384	274,851	133,138
Share-based Compensation Award, Restricted Stock Units, Weighted Average Grant Date Fair Value	$ 11.60	$ 11.31	$ 10.50
Stock Issued During Period, Shares, Restricted Stock Units	220,777	228,488	188,001
Restricted Stock Units, Granted, Weighted Average Grant Date Fair Value	$ 11.78	$ 11.76	$ 10.56
Stock Issued During Period, Shares, Restricted Stock Units, Vested	(163,990)	(116,504)	(44,052)
Stock Issued During Period, Shares, Restricted Stock Units, Forfeited	(55,008)	(40,451)	(2,236)
Restricted Stock Units, Forfeited, Weighted Average Grant Date Fair Value	$ 11.56	$ 11.02	$ 10.34
Share-based Compensation	3,109,000	3,207,000	3,128,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	2,100,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 2,700,000
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years