Stock-Based Employee Compensation (Stock Option Compensation Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 17, 2014	Jun. 11, 2013	Jun. 17, 2014	Jun. 11, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock compensation cost	$ 581	$ 238	$ 1,154	$ 466
Restaurant Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock compensation cost	101	49	199	91
General And Administrative Cost [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock compensation cost	$ 480	$ 189	$ 955	$ 375