Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011
Operating activities:
Net income	$ 100,215	$ 84,386
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	17,232	4,258
Depreciation and amortization	70,659	71,688
Loss on disposal and write-down of property and equipment	2,358	782
Stock-based compensation	12,324	17,009
Non-cash interest and other non-cash items	357	364
Tax benefit from exercise/vesting of stock awards	8,788	8,242
Changes in assets and liabilities:
Accounts receivable	(11,693)	(13,601)
Merchandise inventories	(56,938)	(84,549)
Prepaid expenses and other current assets	(12,860)	1,206
Refundable income taxes	1,786	678
Other non-current assets and liabilities, net	7,422	19,611
Accounts payable and accrued expenses	20,299	(12,428)
Net cash provided by operating activities	159,949	97,646
Investing activities:
Purchases of marketable securities	(1,901)	(1,145)
Sales of marketable securities	158	84
Purchases of property and equipment	(111,185)	(96,292)
Payments for (Proceeds from) Other Investing Activities	(649)	0
Net cash used for investing activities	(113,577)	(97,353)
Financing activities:
Proceeds from the issuance of common stock pursuant to the Associate Discount Stock Purchase Plan	1,602	1,707
Proceeds from exercise of stock options	34,309	7,984
Excess tax benefits from stock-based compensation	11,925	8,113
Repurchases of common and restricted stock	(79,123)	(105,109)
Repayments of fixed asset financing and capital lease obligations	(1,089)	(1,157)
Change in trade payable program obligation, net	2,357	1,115
Net cash used for financing activities	(30,019)	(87,347)
Effect of Exchange Rate on Cash and Cash Equivalents	(29)	0
Net decrease in cash	16,324	(87,054)
Cash and cash equivalents, beginning of period	150,208	226,644
Cash and cash equivalents, end of period	166,532	139,590
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	951	1,092
Cash paid during the period for income taxes	37,683	32,797
Accrual for purchases of property and equipment	$ 31,566	$ 19,631