Fair Value Measurements (Details) (USD $)	6 Months Ended											3 Months Ended		6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012 Recurring	Jan. 28, 2012 Recurring	Jul. 30, 2011 Recurring	Jul. 28, 2012 Recurring Quoted Prices in Active Markets for Identical Instruments (Level 1)	Jan. 28, 2012 Recurring Quoted Prices in Active Markets for Identical Instruments (Level 1)	Jul. 30, 2011 Recurring Quoted Prices in Active Markets for Identical Instruments (Level 1)	Jul. 28, 2012 Recurring Significant Other Observable Inputs (Level 2)	Jan. 28, 2012 Recurring Significant Other Observable Inputs (Level 2)	Jul. 30, 2011 Recurring Significant Other Observable Inputs (Level 2)	Jul. 28, 2012 Non-Recurring Significant Unobservable Inputs (Level 3)	Jul. 30, 2011 Non-Recurring Significant Unobservable Inputs (Level 3)	Jul. 28, 2012 Non-Recurring Significant Unobservable Inputs (Level 3)	Jul. 30, 2011 Non-Recurring Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents			$ 20,036,000	$ 20,017,000	$ 40,003,000	$ 20,036,000	$ 20,017,000	$ 40,003,000
Derivative financial instruments			43,000	14,000	89,000				43,000	14,000	89,000
Liabilities:
Derivative financial instruments			47,000	142,000	362,000				47,000	142,000	362,000
Charges for the impairment of long-lived assets	122,000	1,030,000										122,000	1,030,000	122,000	1,030,000
Fair values of long-lived assets												$ 0	$ 100,000	$ 0	$ 100,000