Consolidated Balance Sheets (unaudited) (USD $) In Thousands	Sep. 27, 2011	Dec. 28, 2010
Current assets:
Cash and cash equivalents	$ 180,897	$ 229,299
Trade accounts receivable, net	25,026	20,378
Other accounts receivable	25,905	17,962
Inventories	15,242	14,345
Prepaid expenses and other	33,699	23,905
Deferred income taxes	17,686	24,796
Total current assets	298,455	330,685
Property and equipment, net	471,867	444,094
Other assets:
Goodwill	108,054	94,442
Other intangible assets, net	68,891	48,402
Deposits and other	7,274	6,958
Total other assets	184,219	149,802
Total assets	954,541	924,581
Current liabilities:
Accounts payable	9,512	7,346
Accrued expenses	204,489	204,170
Total current liabilities	214,001	211,516
Deferred rent	51,490	47,974
Deferred income taxes	32,154	30,264
Other long-term liabilities	42,409	39,219
Total liabilities	340,054	328,973
Common stock, $.0001 par value per share:
Treasury stock, carried at cost; 2,020,170 shares in 2011 and 1,119,092 shares in 2010	(172,637)	(78,990)
Preferred Stock, Value, Outstanding	0	0
Additional paid-in capital	145,160	130,005
Accumulated other comprehensive income	314	275
Retained earnings	641,647	544,315
Total stockholders' equity	614,487	595,608
Total liabilities and stockholders' equity	954,541	924,581
Common Stock Class A [Member] | Common Stock [Member]
Common stock, $.0001 par value per share:
Common stock	3	3
Total stockholders' equity	3	3
Common Stock Class B [Member] | Common Stock [Member]
Common stock, $.0001 par value per share:
Common stock	0	0
Total stockholders' equity	$ 0	$ 0