Supplemental Executive Retirement Plan (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010	Jan. 29, 2011
Net periodic benefit cost
Service costs		$ 69,000		$ 207,000	$ 69,000
Interest costs	662,000	557,000	1,978,000	1,673,000	2,177,000
Net amortization of unrecognized prior service cost	155,000	186,000	785,000	808,000
Net amortization of actuarial losses	458,000	140,000	1,592,000	420,000
Curtailment expense			1,242,000	5,819,000
Net periodic defined benefit pension cost	1,275,000	952,000	5,597,000	8,927,000
Cash surrender values of the insurance policies held in a rabbi trust	34,600,000		34,600,000		32,900,000
Gain (loss) as a result of the change in value of the insurance policy investments, included in other income and expense	(700,000)	1,500,000	(300,000)	2,200,000
Reconciliation of the changes in the projected benefit obligation
Balance at the beginning of the period			47,772,000	37,165,000
Service costs		69,000		207,000	69,000
Interest costs	662,000	557,000	1,978,000	1,673,000	2,177,000
Actuarial losses			1,609,000		8,361,000
Balance at the end of the period	$ 51,359,000		$ 51,359,000		$ 47,772,000