Stock Repurchase Program And Shares Withheld From Vested Restricted Shares - Summary of Stock Repurchase Activities and Shares Withheld from Vested Restricted Shares during Period (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jan. 27, 2013	Jan. 29, 2012	Jan. 30, 2011
Equity, Class of Treasury Stock [Line Items]
Repurchases, shares	273,139	2,279,526	164,636
Repurchases, value	$ 7,769	$ 50,665	$ 2,819
Shares repurchased under the 2008 program
Equity, Class of Treasury Stock [Line Items]
Repurchases, shares	263,443	2,252,099	74,702
Repurchases, value	7,500	50,000	1,258
Shares withheld from vested restricted shares
Equity, Class of Treasury Stock [Line Items]
Repurchases, shares	9,696	27,427	89,934
Repurchases, value	$ 269	$ 665	$ 1,561