Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Oct. 27, 2012	Jan. 28, 2012	Oct. 29, 2011
Current Assets:
Cash and cash equivalents	$ 53,075	$ 34,893	$ 36,510
Short-term investments	202,277	205,771	205,810
Restricted cash and investments	5,999	5,325	5,325
Accounts receivable, net of allowance for doubtful accounts	42,790	43,024	38,026
Merchandise inventories	130,826	130,382	127,247
Deferred income taxes	3,583	3,579	3,512
Prepaid expenses	3,630	6,158	3,566
Total Current Assets	442,180	429,132	419,996
Property and equipment - net	130,635	115,445	109,811
Other assets	7,380	6,512	6,888
Total Assets	580,195	551,089	536,695
Current Liabilities:
Accounts payable	84,846	94,073	82,248
Accrued expenses	46,443	37,584	41,416
Accrued bonus and benefits	4,597	10,192	9,451
Accrued income taxes	9,999	15,144	16,638
Total Current Liabilities	145,885	156,993	149,753
Deferred tax liabilities noncurrent	7,887	7,887	9,541
Other noncurrent liabilities (primarily deferred rent)	24,964	19,530	15,431
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	972
Additional paid-in capital	74,785	72,030	71,075
Retained earnings	324,767	292,741	289,364
Accumulated other comprehensive income	931	936	559
Total Stockholders' Equity	401,459	366,679	361,970
Liabilities And Stockholders Equity	580,195	551,089	536,695
Common Class A [Member]
Class of Stock [Line Items]
Common stock	918	914	914
Common Class B [Member]
Class of Stock [Line Items]
Common stock	$ 58	$ 58	$ 58