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Share-Based Compensation (Tables)
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12 Months Ended |
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Jan. 28, 2012
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| Share-based Compensation [Abstract] |
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| Schedule of Shared-based Compensation Expense [Table Text Block] |
| | | | | | | | | | | | 2011 | 2010 | 2009 | | (in thousands) | Stock options | $ | 6,323 |
| $ | 2,044 |
| $ | — |
| Restricted stock units and restricted stock | 3,597 |
| 102 |
| — |
| Restricted shares (equity issued pre-IPO) | 169 |
| 3,150 |
| 2,048 |
| Total share-based compensation | $ | 10,089 |
| $ | 5,296 |
| $ | 2,048 |
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| Schedule of Share-based Compensation, Activity [Table Text Block] |
| | | | | | | | | | | | | | | | Number of Shares | | Grant Date Weighted Average Exercise Price | | Weighted-Average Remaining Contractual Life | | Aggregate Intrinsic Value | | (in thousands, except per share amounts and years) | Outstanding, January 29, 2011 | 1,383 |
| | $ | 16.94 |
| | | | | Granted | 1,469 |
| | $ | 18.79 |
| | | | | Exercised | (19 | ) | | $ | 17.00 |
| | | | | Forfeited | (166 | ) | | $ | 17.44 |
| | | | | Outstanding, January 28, 2012 | 2,667 |
| | $ | 17.93 |
| | 8.8 |
| | $ | 10,597 |
| Expected to vest at January 28, 2012 | 2,313 |
| | $ | 18.05 |
| | 8.8 |
| | $ | 8,882 |
| Exercisable at January 28, 2012 | 321 |
| | $ | 16.94 |
| | 8.3 |
| | $ | 1,582 |
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| Supplemental Options Data [Table Text Block] |
| | | | | | | | | 2011 | 2010 | | (in thousands, except per share amounts) | Weighted average grant date fair value of options granted | $ | 10.01 |
| $ | 9.17 |
| Total intrinsic value of options exercised | $ | 102 |
| $ | — |
| Total fair value of options vested | $ | 3,115 |
| $ | — |
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| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| | | | | | | | 2011 | | 2010 | Risk-free interest rate (1) | 2.27 | % | | 2.84 | % | Price Volatility (2) | 54 | % | | 54 | % | Expected term (years) (3) | 6.25 |
| | 6.25 |
| Dividend yield (4) | — |
| | — |
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| Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
The Company's activity with respect to RSUs and restricted stock for 2011 was as follows: | | | | | | | | Number of Shares | Grant Date Weighted Average Fair Value | | (in thousands, except per share amounts) | Unvested, January 29, 2011 | 44 |
| $ | 4.88 |
| Granted | 939 |
| $ | 18.96 |
| Vested | (14 | ) | $ | 7.67 |
| Forfeited | (69 | ) | $ | 18.14 |
| Unvested, January 28, 2012 | 900 |
| $ | 18.52 |
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| Schedule of Nonvested Share Activity [Table Text Block] |
The Company's activity with respect to restricted shares for 2011 was as follows: | | | | | | | | Number of Shares | Grant Date Weighted Average Fair Value | | (in thousands, except per share amounts) | Unvested, January 29, 2011 | 220 |
| $ | 1.03 |
| Granted | — |
| $ | — |
| Vested | (187 | ) | $ | 1.06 |
| Repurchased | (11 | ) | $ | 0.90 |
| Unvested, January 28, 2012 | 22 |
| $ | 0.90 |
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| Schedule of Share-based Payment Award, Restricted Shares, Valuation Assumptions [Table Text Block] |
The following table illustrates the assumptions used in the Black-Scholes-Merton pricing model for the restricted shares: | | | | | | | 2009 | Risk-free interest rate | | 0.20 | % | Asset volatility | | 50 | % | Time to liquidity event | | 7 months |
| Marketability discount | | 10 | % | Equity dividend yield | | — |
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