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Stock-Based Compensation (Details)	3 Months Ended		6 Months Ended
Stock-Based Compensation (Details)	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011
Weighted-average assumptions used to estimate the fair value of options granted
Dividend Yield	0.00%	0.00%	0.00%	0.00%
Expected Volatility	46.47%	54.00%	48.87%	54.00%
Risk-Free Interest Rate	0.45%	0.91%	0.48%	1.31%
Expected Life of Options (in Years)	3 years 3 months 18 days	3 years 3 months 18 days	3 years 3 months 18 days	3 years 3 months 18 days

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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