Stock-Based Compensation (Details Textuals 2) (Employee stock purchase plan)	3 Months Ended	6 Months Ended
Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount provided to employees for purchases under the plan	15.00%	15.00%	15.00%	15.00%

The discount rate from market value on purchase date that participants pay for shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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