Consolidated Statements of Cash Flows (unaudited) (USD $)	9 Months Ended
	Sep. 25, 2012	Sep. 27, 2011
Cash flows from operations:
Net income	$ 121,836,000	$ 97,332,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	67,290,000	58,869,000
Stock-based compensation expense	6,596,000	7,506,000
Excess tax benefit from exercise of stock options	(7,251,000)	(3,934,000)
Deferred income taxes	(2,984,000)	9,000,000
Other	1,951,000	2,207,000
Changes in operating assets and liabilities, excluding the effect of acquisitions and dispositions:
Trade and other accounts receivable, net	2,294,000	(12,591,000)
Inventories	(430,000)	(409,000)
Prepaid expenses	(12,363,000)	(9,794,000)
Deposits and other	90,000	(316,000)
Accounts payable	(8,059,000)	2,166,000
Accrued expenses	47,336,000	(4,562,000)
Deferred rent	4,096,000	3,516,000
Other long-term liabilities	(916,000)	803,000
Net cash provided by operating activities	219,486,000	149,793,000
Cash flows from investing activities:
Additions to property and equipment	(105,285,000)	(67,935,000)
Acquisitions, net of cash acquired	(47,951,000)	(44,377,000)
Proceeds from sale of bakery-cafes	0	115,000
Net cash used in investing activities	(153,236,000)	(112,197,000)
Cash flows from financing activities:
Repurchase of common stock	(11,326,000)	(93,647,000)
Exercise of employee stock options	3,204,000	2,183,000
Excess tax benefit from exercise of stock options	7,251,000	3,934,000
Proceeds from issuance of common stock under employee benefit plans	1,865,000	1,532,000
Net cash provided by (used in) financing activities	994,000	(85,998,000)
Net increase (decrease) in cash and cash equivalents	67,244,000	(48,402,000)
Cash and cash equivalents at beginning of period	222,640,000	229,299,000
Cash and cash equivalents at end of period	$ 289,884,000	$ 180,897,000