Other Changes Recognized in Other Comprehensive Loss (Detail) (Supplemental Executive Retirement Plan, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized losses at the beginning of the year	$ 142	$ 171	$ 144
Net periodic pension cost	(31)	(30)	(30)
Employer contribution	30	30	30
Change in plan assets and benefit obligations	115	(29)	27
Unrecognized losses at the end of year	$ 256	$ 142	$ 171