CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2012	Sep. 24, 2011
Cash flows from operating activities:
Net income	$ 196,970	$ 152,228
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	66,380	56,685
(Gain) loss on disposition of property and equipment	(65)	187
Stock compensation expense	14,051	10,693
Excess tax benefit of stock options exercised	(19,738)	(11,902)
Deferred income taxes	(14,789)	(1,902)
Change in assets and liabilities:
Inventories	(189,321)	(177,218)
Prepaid expenses and other current assets	836	(6,253)
Accounts payable	95,650	92,820
Accrued employee compensation	(19,040)	2,247
Other accrued expenses	(11,613)	(12,561)
Income taxes payable	32,698	6,483
Other	3,822	(175)
Net cash provided by operating activities	155,841	111,332
Cash flows from investing activities:
Capital expenditures	(111,176)	(107,326)
Proceeds from sale of property and equipment	321	721
Decrease (increase) in restricted cash	13,470	(21,870)
Proceeds from sale of short-term investments	0	15,913
Net cash used in investing activities	(97,385)	(112,562)
Cash flows from financing activities:
Excess tax benefit of stock options exercised	19,738	11,902
Principal payments under capital lease obligations	(27)	(83)
Restricted stock units withheld to satisfy tax obligations	(6,581)	(981)
Repurchase of common stock	(163,840)	(172,093)
Net proceeds from issuance of common stock	22,710	24,036
Cash dividends paid to stockholders	(37,236)	(22,300)
Net cash used in financing activities	(165,236)	(159,519)
Net decrease in cash and cash equivalents	(106,780)	(160,749)
Cash and cash equivalents at beginning of period	176,965	257,339
Cash and cash equivalents at end of period	70,185	96,590
Cash paid during the period for:
Interest	1,143	565
Income taxes	95,577	81,942
Non-cash accruals for construction in progress	$ (3,449)	$ (4,763)