Supplemental Plan's Funded Status (Detail) (Supplemental Executive Retirement Plan, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014
Supplemental Executive Retirement Plan
Change in benefit obligation:
Balance at beginning of period	$ 629	$ 656
Benefits and expenses paid	(30)	(30)
Interest cost on projected benefit obligation	27	26
Actuarial (gain) loss	119	(23)
Balance at end of year	745	629
Change in fair value of plan assets
Employer contributions	30	30
Benefits and expenses paid	(30)	(30)
Projected benefit obligation	745	629
Reconciliation of Funded Status
Projected benefit obligation	745	629
Unfunded Status	(745)	(629)
Balance Sheet Classification
Other long-term liabilities	$ 745	$ 629