Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jul. 28, 2012	Jan. 28, 2012	Jul. 30, 2011
Current Assets:
Cash and cash equivalents	$ 66,043	$ 34,893	$ 77,376
Short-term investments	211,390	205,771	190,533
Restricted cash and investments	5,311	5,325	4,801
Accounts receivable, net of allowance for doubtful accounts	43,373	43,024	37,621
Merchandise inventories	107,034	130,382	117,225
Deferred income taxes	3,535	3,579	3,338
Prepaid expenses	4,160	6,158	3,739
Total Current Assets	440,846	429,132	434,633
Property and equipment - net	125,520	115,445	104,333
Other assets	7,016	6,512	9,434
Total Assets	573,382	551,089	548,400
Current Liabilities:
Accounts payable	70,573	94,073	86,553
Accrued expenses	43,160	37,584	36,308
Accrued bonus and benefits	4,708	10,192	8,906
Accrued income taxes	19,555	15,144	23,145
Total Current Liabilities	137,996	156,993	154,912
Deferred tax liabilities noncurrent	7,887	7,887	9,540
Other noncurrent liabilities (primarily deferred rent)	24,231	19,530	14,190
Commitments And Contingenciess	0	0	0
Stockholders' Equity:
Preferred stock, $100 par value per share, 100,000 shares authorized, none issued	0	0	0
Class of Stock [Line Items]
Common stock	976	972	983
Additional paid-in capital	73,863	72,030	70,203
Retained earnings	327,420	292,741	297,713
Accumulated other comprehensive income	1,009	936	859
Total Stockholders' Equity	403,268	366,679	369,758
Liabilities And Stockholders Equity	573,382	551,089	548,400
Common Class A [Member]
Class of Stock [Line Items]
Common stock	918	914	925
Common Class B [Member]
Class of Stock [Line Items]
Common stock	$ 58	$ 58	$ 58