Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 28, 2012	Apr. 30, 2011
Operating activities:
Net income	$ 10,104	$ 12,093
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,145	5,584
Loss on disposal of property and equipment	10	39
Deferred income taxes	(341)	701
Noncash stock-based compensation expense	544	783
Excess tax benefits from stock-based payment arrangements	444	(739)
Changes in assets and liabilities:
Inventory	16,518	8,052
Prepaid and other current assets	457	467
Other assets	13	(3)
Accounts payable	(18,945)	(8,946)
Accrued expenses and other long-term liabilities	(64)	2,931
Accrued compensation	(1,305)	(1,600)
Income tax receivable/payable	9,638	5,558
Layaway deposits	1,372	1,484
Net cash provided by operating activities	24,590	26,404
Investing activities:
Sales/redemptions of investment securities	17	835
Purchases of investment securities		(7,868)
Purchases of property and equipment	(1,851)	(11,902)
Net cash used in investing activities	(1,834)	(18,935)
Financing activities:
Excess tax benefits from stock-based payment arrangements	(444)	739
Proceeds from the exercise of stock options		9
Shares acquired to settle withholding taxes on the vesting of nonvested restricted stock	(334)	(601)
Net cash (used in) provided by financing activities	(778)	147
Net increase in cash and cash equivalents	21,978	7,616
Cash and cash equivalents:
Beginning of period	41,986	69,231
End of period	63,964	76,847
Supplemental disclosures of cash flow information:
Cash paid for interest	31
Cash (refunds) payments of income taxes	(3,536)	14
Supplemental disclosures of noncash investing activities:
Decrease in accrual for purchases of property and equipment	$ (615)	$ (403)