Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 25, 2012	Dec. 27, 2011	Dec. 28, 2010
Cash flows from operations:
Net Income	$ 173,448,000	$ 135,952,000	$ 111,599,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	90,939,000	79,899,000	68,673,000
Stock-based compensation expense	9,094,000	9,861,000	9,558,000
Tax benefit from exercise of stock options	(8,587,000)	(4,994,000)	(3,603,000)
Increase (Decrease) in Deferred Income Taxes	20,334,000	1,351,000	(4,660,000)
Other	4,470,000	2,423,000	1,114,000
Changes in operating assets and liabilities, excluding the effect of acquisitions:
Trade and other accounts receivable, net	(31,414,000)	(16,369,000)	(13,180,000)
Inventories	(2,440,000)	(2,183,000)	(1,540,000)
Prepaid expenses	(10,995,000)	(7,323,000)	(7,694,000)
Deposits and other	161,000	117,000	(2,337,000)
Accounts payable	(6,513,000)	8,538,000	929,000
Accrued expenses	49,246,000	19,630,000	61,891,000
Deferred rent	5,718,000	6,081,000	4,603,000
Other long-term liabilities	(4,005,000)	3,906,000	12,281,000
Net cash provided by operating activities	289,456,000	236,889,000	237,634,000
Cash flows from investing activities:
Additions to property and equipment	(152,328,000)	(107,932,000)	(82,226,000)
Acquisitions, net of cash acquired	(47,951,000)	(44,377,000)	(52,177,000)
Proceeds from sale of bakery-cafes	4,538,000	115,000	2,204,000
Net cash used in investing activities	(195,741,000)	(152,194,000)	(132,199,000)
Cash flows from financing activities:
Repurchase of common stock	(31,566,000)	(96,605,000)	(153,492,000)
Exercise of employee stock options	4,455,000	3,193,000	25,551,000
Tax benefit from exercise of stock options	8,587,000	4,994,000	3,603,000
Proceeds from issuance of common stock under employee benefit plans	2,462,000	2,040,000	1,802,000
Debt Issuance Cost	(1,097,000)	0	0
Payment of Deferred Acquisition Holdback	(2,055,000)	(4,976,000)	0
Net cash (used in) provided by financing activities	(19,214,000)	(91,354,000)	(122,536,000)
Net (decrease) increase in cash and cash equivalents	74,501,000	(6,659,000)	(17,101,000)
Cash and Cash Equivalents at beginning of period	222,640,000	229,299,000
Cash and Cash Equivalents, at Carrying Value	$ 297,141,000	$ 222,640,000	$ 229,299,000