Debt Obligations (Details) (USD $)	9 Months Ended
	Oct. 27, 2012	Jan. 28, 2012
Debt Instrument [Line Items]
Total debt obligations	$ 34,004,000	$ 49,503,000
Less: Current portion of debt obligations	727,000	13,782,000
Long-term debt obligations	33,277,000	35,721,000
Revolving credit facility, maximum borrowing capacity	250,000,000
Revolving credit facility, expiration date	Jun. 30, 2016
Aggregate amount of revolving credit facility with accordion feature	350,000,000
Revolving credit facility, weighted average interest rate during period	2.10%
Revolving credit facility, average daily borrowings	17,000,000
Letters of credit outstanding	4,200,000
Revolving credit facility, excess borrowing availability	218,300,000
Interest rate, minimum (in hundredths)	4.60%
Interest rate, maximum (in hundredths)	6.00%
Equipment financing repayment	14,000,000
Prepayment penalty fees	100,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt obligations	27,500,000	24,500,000
Equipment Financing Notes [Member]
Debt Instrument [Line Items]
Total debt obligations		17,996,000
Finance lease obligations [Member]
Debt Instrument [Line Items]
Total debt obligations	$ 6,504,000	$ 7,007,000