Stock-Based Compensation (Stock Option Valuation) (Details)
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12 Months Ended |
Feb. 02, 2019 |
Feb. 03, 2018 |
Jan. 28, 2017 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term |
|
3 years 2 months
|
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| Weighted-average expected option term |
|
4 years 7 months
|
4 years 7 months
|
4 years 8 months
|
| Weighted-average expected volatility |
|
93.70%
|
57.90%
|
54.22%
|
| Weighted-average risk-free interest rate |
|
2.95%
|
2.02%
|
1.38%
|
| Weighted-average expected dividend yield (1) |
[1] |
0.00%
|
0.00%
|
0.00%
|
| Minimum [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
| Weighted-average expected dividend yield (1) |
|
0.00%
|
0.00%
|
0.00%
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| Maximum [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
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|
| Weighted-average expected dividend yield (1) |
|
0.00%
|
0.00%
|
0.00%
|
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