Consolidated Statements of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 24, 2012	Jun. 26, 2011	Jun. 24, 2012	Jun. 26, 2011
Revenue:
Restaurant sales	$ 220,550	$ 167,896	$ 452,866	$ 333,423
Franchise royalties and fees	18,173	16,205	36,979	32,828
Total revenue	238,723	184,101	489,845	366,251
Restaurant operating costs:
Cost of sales	69,799	45,735	141,950	91,999
Labor	66,638	51,309	134,906	100,187
Operating	32,349	25,048	65,146	49,597
Occupancy	13,091	10,659	25,891	20,886
Depreciation and amortization	16,090	11,931	31,621	22,953
General and administrative	20,976	18,766	40,400	35,058
Preopening	1,536	4,116	4,127	6,503
Loss on asset disposals and store closures	597	492	1,334	903
Total costs and expenses	221,076	168,056	445,375	328,086
Income from operations	17,647	16,045	44,470	38,165
Investment income (loss)	(115)	(152)	295	204
Earnings before income taxes	17,532	15,893	44,765	38,369
Income tax expense	5,870	5,220	14,858	12,835
Net earnings	$ 11,662	$ 10,673	$ 29,907	$ 25,534
Earnings per common share – basic (in Dollars per share)	$ 0.63	$ 0.58	$ 1.61	$ 1.39
Earnings per common share – diluted (in Dollars per share)	$ 0.62	$ 0.58	$ 1.60	$ 1.39
Weighted average shares outstanding – basic (in Shares)	18,574,924	18,330,333	18,565,131	18,318,342
Weighted average shares outstanding – diluted (in Shares)	18,660,000	18,401,000	18,650,000	18,389,000