Business and Summary of Significant Accounting Policies (Impairment of Long-Lived Assets) (Details) (Asset Disposals, Closure Costs and Restaurant Impairments [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2014	Dec. 31, 2013	Jan. 01, 2013
Asset Disposals, Closure Costs and Restaurant Impairments [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges	$ 57	$ 100	$ 100