CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Cash flows from operating activities:
Net income	$ 276,457	$ 222,740	$ 167,972
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	88,975	80,347	69,797
Loss on disposition of property and equipment	76	955	1,062
Stock compensation expense	17,641	15,041	11,771
Excess Tax Benefit from Share-based Compensation, Operating Activities	(25,836)	(17,435)	(9,815)
Deferred income taxes	(26,581)	1,856	2,690
Change in assets and liabilities
Inventories	(77,297)	(94,299)	(60,054)
Prepaid expenses and other current assets	(80)	(17,783)	(3,201)
Accounts payable	53,983	19,021	(14,247)
Accrued employee compensation	139	13,685	11,851
Other accrued expenses	8,828	6,312	26,691
Income taxes payable	57,321	21,040	10,819
Other	4,676	2,664	7,272
Net cash provided by operating activities	378,302	254,144	222,608
Cash flows from investing activities:
Capital expenditures	(152,924)	(166,156)	(96,511)
Proceeds from sale of property and equipment	379	752	313
Restricted cash deposits	13,470	(21,870)	0
Purchases of short-term investments	0	0	(15,913)
Proceeds from sale of short-term investments	0	15,913	0
Net cash used in investing activities	(139,075)	(171,361)	(112,111)
Cash flows from financing activities:
Excess tax benefit of stock options exercised	25,836	17,435	9,815
Principal payments under capital lease obligations	(37)	(90)	(392)
Restricted stock units withheld to satisfy tax obligations	(6,821)	(1,115)	(783)
Repurchase of common stock	(271,799)	(179,997)	(38,172)
Net proceeds from issuance of common stock	26,577	31,460	23,878
Cash dividends paid to stockholders	(51,318)	(30,850)	(20,355)
Net cash used in financing activities	(277,562)	(163,157)	(26,009)
Net (decrease) increase in cash and cash equivalents	(38,335)	(80,374)	84,488
Cash and cash equivalents at beginning of year	176,965	257,339	172,851
Cash and cash equivalents at end of year	138,630	176,965	257,339
Cash paid during the year for:
Interest	1,219	614	305
Income taxes	128,306	103,630	82,821
Accruals for construction in progress	$ (5,440)	$ (350)	$ 0