Commitments and Contingencies - Schedule of Liability for Deferred Compensation (Details) (USD $) In Thousands, unless otherwise specified	Jan. 27, 2013	Jan. 29, 2012
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Accrued liabilities	$ 1,410	$ 901
Deferred Compensation Plan For Officers And Executives [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Accrued liabilities	530	901
Other long-term liabilities	13,396	10,222
Total deferred compensation liabilities under this plan	$ 13,926	$ 11,123