Share-Based Compensation Restricted Share Awards activity (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Awards, Weighted Average Remaining Vest Period		6 months
Stock Issued During Period, Shares, Restricted Stock Award, Gross	0
Restricted Stock Awards, Granted, Weighted Average Grant Date Fair Value	$ 0.00
Stock Issured During Period, Shares, Restricted Stock Award, Vested	(13,347)
Restricted Stock Awards, Vested, Weighted Average Grant Date Fair Value	$ 9.95
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited	0
Share-based Compensation Award, Restricted Stock Award Unvested, Number	0	13,347
Share-based Compensation Award, Restricted Stock Award, Unvested, Weighted Average Grant Date Fair Value	$ 0.00	$ 9.95
Share-based Compensation Award, Restricted Stock Award, Vested in Period, Total Fair Value	$ 0.1