Commitments and Contingencies - Schedule of Compensation Expense and Forfeitures Under Deferred Compensation Plan (Details) (Deferred Compensation Plan For Officers And Executives, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 26, 2014	Jan. 27, 2013	Jan. 29, 2012
Deferred Compensation Plan For Officers And Executives
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Forfeitures	$ (180)	$ 0	$ (194)
Compensation expense, excluding forfeitures	2,644	1,839	885
Compensation expense, net of forfeitures	$ 2,464	$ 1,839	$ 691