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Income Taxes Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2012	Dec. 29, 2011
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 22.8
Deferred Tax Assets, Valuation Allowance	2.4	2.6
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 0.2
Estimated Period for Increase in Unrecognized Tax Benefit	12 months

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.