CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 03, 2012	Jun. 28, 2011	Jul. 03, 2012	Jun. 28, 2011
Revenues	$ 454,749	$ 430,746	$ 890,503	$ 849,511
Costs and expenses:
Cost of sales	111,019	109,924	218,617	214,588
Labor expenses	146,086	139,469	289,066	276,967
Other operating costs and expenses	108,870	103,392	214,758	206,666
General and administrative expenses	26,278	24,208	54,943	48,473
Depreciation and amortization expenses	18,509	17,483	36,807	34,936
Preopening costs	3,017	1,108	5,123	2,868
Total costs and expenses	413,779	395,584	819,314	784,498
Income from operations	40,970	35,162	71,189	65,013
Interest and other (expense)/income, net	(838)	(1,094)	(1,986)	(2,496)
Income before income taxes	40,132	34,068	69,203	62,517
Income tax provision	11,733	9,320	20,082	17,313
Net income	28,399	24,748	49,121	45,204
Other comprehensive income, net	0		0
Comprehensive income	$ 28,399	$ 24,748	$ 49,121	$ 45,204
Net income per share:
Basic (in dollars per share)	$ 0.53	$ 0.44	$ 0.92	$ 0.79
Diluted (in dollars per share)	$ 0.52	$ 0.42	$ 0.89	$ 0.76
Weighted average shares outstanding:
Basic (in shares)	53,155	56,554	53,417	57,517
Diluted (in shares)	55,091	58,595	55,376	59,543