Supplemental Executive Retirement Plan (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Aug. 02, 2014	Aug. 03, 2013	Feb. 01, 2014
Supplemental Executive Retirement Plan
Impact of plan amendment on projected benefit obligation and unrecognized prior service cost					$ 4,500,000
SERP benefit payments	300,000		300,000
Components of net periodic pension cost
Interest cost	572,000	586,000	1,144,000	1,172,000
Net amortization of unrecognized prior service (credit) cost	(58,000)	156,000	(116,000)	311,000
Net amortization of actuarial losses	235,000	277,000	469,000	554,000
Net periodic defined benefit pension cost	749,000	1,019,000	1,497,000	2,037,000
Other income/expense
Supplemental Executive Retirement Plan
Gain as a result of the change in value of the insurance policy investments, included in other income and expense	700,000	1,100,000	2,200,000	2,600,000
Other assets
Supplemental Executive Retirement Plan
Cash surrender values of the insurance policies held in a rabbi trust	53,600,000		53,600,000		51,400,000
Accrued expenses and other long-term liabilities
Supplemental Executive Retirement Plan
Projected benefit obligation	$ 55,600,000		$ 55,600,000		$ 54,700,000