Commitments and Contingencies - Schedule of Compensation Expense and Forfeitures Under Deferred Compensation Plan (Details) - Deferred Compensation Plan For Officers And Executives - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 25, 2015	Jan. 26, 2014
Schedule of compensation expense and forfeitures under deferred compensation plan [Line Items]
Forfeitures	$ (159)	$ (112)	$ (180)
Compensation (income) expense	(660)	2,449	2,644
Compensation expense, net of forfeitures	$ (819)	$ 2,337	$ 2,464