Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 15, 2013	Jun. 16, 2012	Jun. 15, 2013	Jun. 16, 2012
Amortization of Intangible Assets	$ 0.2	$ 0.2	$ 0.4	$ 0.3
Finite-Lived Intangible Assets, Amortization Expense, Year Two	0.6		0.6
Finite-Lived Intangible Assets, Amortization Expense, Year Three	0.6		0.6
Finite-Lived Intangible Assets, Amortization Expense, Year Four	0.5		0.5
Schedule of Expected Amortization Expense [Table Text Block]	$ 0.4		$ 0.4
Software [Member]
Finite-Lived Intangible Asset, Useful Life			9 years
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life			5 years
Other Intangible Assets [Member]
Finite-Lived Intangible Asset, Useful Life			4 years