Stock Based Compensation Additional - (Details) (Class A Common Stock, USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011	Jan. 28, 2012
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized Compensation Expense	$ 7,700,000	$ 7,300,000	$ 7,700,000	$ 7,300,000	$ 6,000,000
Remaining Weighted-Average Vesting Period			2 years 9 months 18 days	2 years 8 months 12 days	2 years 2 months 12 days
Compensation Expense	794,000	790,000	1,398,000	1,257,000
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation Expense	0	0	0	0
Intrinsic Value	28,000	41,000	50,000	41,000
Options Granted	0	0	0	0
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares Sold			11,687	12,006
Compensation Expense			$ 46,000	$ 45,000
Employee Stock Purchase Plan Share Purchase Discount	$ 3.92	$ 3.74	$ 3.92	$ 3.74