Fair Value Measurements (Details) (USD $)	0 Months Ended		3 Months Ended	6 Months Ended
	May 16, 2013	May 12, 2012	Jul. 28, 2012	Jul. 28, 2012	Jul. 30, 2011	Feb. 02, 2013	Jan. 28, 2012
Fair Value, Option, Quantitative Disclosures [Line Items]
Document Period End Date			Jul. 28, 2012
Future Amortization Expense, Remainder of Fiscal Year						$ 4,000,000
Payments to Acquire Intangible Assets	2,830,000	4,000,000		4,000,000	0
Restricted Cash and Investments, Current			2,100,000	2,100,000			2,100,000
Long-term Line of Credit, Noncurrent			38,000,000	38,000,000			0
Long-term payable			$ 0	$ 0			$ 25,000,000