Consolidated Statements of Cash Flows (unaudited) (USD $)	3 Months Ended
	Apr. 01, 2014	Mar. 26, 2013
Cash flows from operations:
Net income	$ 42,395,000	$ 48,117,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,442,000	24,365,000
Stock-based compensation expense	3,139,000	2,728,000
Excess tax benefit from exercise of stock options	(351,000)	(224,000)
Increase (Decrease) in Deferred Income Taxes	(16,325,000)	11,666,000
Other	297,000	413,000
Changes in operating assets and liabilities, excluding the effect of acquisitions and dispositions:
Trade and other accounts receivable, net	37,414,000	17,597,000
Inventories	2,688,000	1,437,000
Prepaid expenses and other	3,479,000	3,022,000
Deposits and other	(94,000)	149,000
Accounts payable	9,632,000	2,296,000
Accrued expenses	(39,096,000)	(24,725,000)
Deferred rent	(2,496,000)	1,010,000
Other long-term liabilities	(5,679,000)	(6,418,000)
Net cash provided by operating activities	64,445,000	81,433,000
Cash flows from investing activities:
Additions to property and equipment	(42,301,000)	(36,031,000)
Proceeds from sale-leaseback transactions	2,709,000	0
Net cash used in investing activities	(39,592,000)	(36,031,000)
Cash flows from financing activities:
Repurchase of common stock	(50,300,000)	(20,304,000)
Exercise of employee stock options	190,000	80,000
Tax benefit from exercise of stock options	351,000	224,000
Proceeds from issuance of common stock under employee benefit plans	748,000	773,000
Net cash provided by (used in) financing activities	(49,011,000)	(19,227,000)
Net increase (decrease) in cash and cash equivalents	(24,158,000)	26,175,000
Cash and cash equivalents at beginning of period	125,245,000	297,141,000
Cash and cash equivalents at end of period	$ 101,087,000	$ 323,316,000