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Share-based Compensation (Schedule of Stock Option Activity) (Details) - Employee Stock Option [Member] - $ / shares | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 29, 2017 | Jul. 30, 2016 | Jul. 29, 2017 | Jul. 30, 2016 | Apr. 29, 2017 | Jan. 28, 2017 | Apr. 30, 2016 | Jan. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Total number of stock options | 92,042 | 222,790 | 92,042 | 222,790 | 97,292 | 150,540 | 229,105 | 301,295
Weighted-average grant date fair value of stock options | $ 6.42 | $ 8.98 | $ 6.42 | $ 8.98 | $ 6.39 | $ 9.36 | $ 8.99 | $ 8.95
Number of stock options granted | 0 | 0 | 0 | 0 |  |  |  |
Weighted-average grant date fair value of stock options granted | $ 0.00 | $ 0.00 | $ 0.00 | $ 0.00 |  |  |  |
Number of stock options exercised | (5,250) | (6,315) | (11,250) | (56,381) |  |  |  |
Weighted-average grant date fair value of stock options exercised | $ 5.93 | $ 9.28 | $ 5.74 | $ 7.41 |  |  |  |
Number of stock options forfeited | 0 | 0 | 0 | (7,499) |  |  |  |
Weighted-average grant date fair value of stock options forfeited | $ 0.00 | $ 0.00 | $ 0.00 | $ 15.94 |  |  |  |
Number of stock options expired | 0 | 0 | (47,248) | (14,625) |  |  |  |
Weighted-average grant date fair value of stock options expired | $ 0.00 | $ 0.00 | $ 15.94 | $ 10.75 |  |  |  |

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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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