Credit Agreements (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended		3 Months Ended			3 Months Ended
	Apr. 28, 2012	Apr. 30, 2011	Feb. 25, 2012 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]	Apr. 28, 2012 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]	Feb. 09, 2012 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]	Feb. 25, 2012 2010 Credit Agreement - Crystal Financial, LLC [Member]	Nov. 27, 2010 2010 Credit Agreement - Crystal Financial, LLC [Member]	Apr. 28, 2012 2010 Credit Agreement - Crystal Financial, LLC [Member]	Nov. 17, 2010 2010 Credit Agreement - Crystal Financial, LLC [Member]	Feb. 09, 2012 LIBOR [Member] 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]	Apr. 28, 2012 Year One [Member] 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]	Apr. 28, 2012 Year Two [Member] 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]	Apr. 28, 2012 Year Three [Member] 2012 Line Of Credit Agreement - PNC Bank, N.A. [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount									$ 25,000,000
Document Period End Date	Apr. 28, 2012
Debt Instrument, Maturity Date Range, End			3				5
Repayments of Long-term Debt	25,715,000	0				25,000,000
Interest Paid	1,025,000	1,204,000		256,000				283,000
Debt Instrument, Basis Spread on Variable Rate										3.00%
Proceeds from Long-term Lines of Credit			38,200,000
Repayments of Secured Debt	12,400,000
Line of Credit Facility, Capacity Available for Trade Purchases					6,000,000
Debt Instrument, Covenant Compliance, Minimum Unrestricted Cash Requirement				6,000,000
Debt Instrument, Covenant Compliance, Minimum Unrestricted Cash Threshold for Additional Covenants				12,000,000
Deferred Finance Costs, Noncurrent, Net				675,000					3,037,000
Line of Credit Facility, Maximum Borrowing Capacity					40,000,000
Debt Early Termination Fee											2.00%	0.50%	0.00%
Line of Credit Facility, Remaining Borrowing Capacity				2,000,000
Gains (Losses) on Extinguishment of Debt	(500,000)	(25,679,000)						500,000
Write off of Deferred Debt Issuance Cost								$ 2,300,000