Share-Based Compensation Valuation Assumptions (Details) (Stock Option [Member])
 12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Stock Option [Member]
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate 1.12% [1] 2.27% [1] 2.84% [1]
Price volatility 55.90% [2] 54.00% [2] 54.00% [2]
Expected Term 6 years 2 months 1 day [3] 6 years 3 months [3] 6 years 3 months [3]
Equity dividend yield 0.00% [4] 0.00% [4] 0.00% [4]
[1] Represents the yield on U.S. Treasury securities with a term consistent with the expected term of the stock options.
[2] For the first two years following the Company's IPO, this was based on the historical volatility of selected comparable companies over a period consistent with the expected term of the stock options because the Company had a limited history of being publicly traded. Comparable companies were selected primarily based on industry, stage of life cycle, and size. Beginning with the second anniversary of the IPO n May 2012, the Company began using its own volatility as an additional input in the determination of expected volatility.
[3] Calculated utilizing the “simplified” methodology prescribed by SAB No. 107 due to the lack of historical exercise data necessary to provide a reasonable basis upon which to estimate the term.
[4] The Company does not currently plan on paying regular dividends.