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Condensed Consolidated Statement of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statement of Income and Comprehensive Income [Abstract]
Revenue	$ 726,751	$ 640,603
Restaurant operating costs (exclusive of depreciation and amortization shown separately below):
Food, beverage and packaging	239,589	206,590
Labor	171,469	151,985
Occupancy	47,620	40,509
Other operating costs	76,656	66,179
General and administrative expenses	44,211	49,334
Depreciation and amortization	22,936	20,084
Pre-opening costs	2,886	2,448
Loss on disposal of assets	1,340	1,250
Total operating expenses	606,707	538,379
Income from operations	120,044	102,224
Interest and other income, net	266	434
Income before income taxes	120,310	102,658
Provision for income taxes	(43,726)	(39,994)
Net income	76,584	62,664
Earnings per share
Basic	$ 2.47	$ 2.00
Diluted	$ 2.45	$ 1.97
Weighted average common shares outstanding
Basic	31,012	31,410
Diluted	31,229	31,846
Comprehensive income	$ 75,480	$ 63,347

X

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred.

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