Share-based Compensation (Schedule of Stock Option Activity) (Details) - Employee Stock Option [Member] - $ / shares |
3 Months Ended | |||
|---|---|---|---|---|
Apr. 29, 2017 |
Apr. 30, 2016 |
Jan. 28, 2017 |
Jan. 30, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Total number of stock options | 97,292 | 229,105 | 150,540 | 301,295 |
| Weighted-average grant date fair value of stock options | $ 6.39 | $ 8.99 | $ 9.36 | $ 8.95 |
| Number of stock options granted | 0 | 0 | ||
| Weighted-average grant date fair value of stock options granted | $ 0.00 | $ 0.00 | ||
| Number of stock options exercised | (6,000) | (50,066) | ||
| Weighted-average grant date fair value of stock options exercised | $ 5.57 | $ 7.17 | ||
| Number of stock options forfeited | 0 | (7,499) | ||
| Weighted-average grant date fair value of stock options forfeited | $ 0.00 | $ 15.94 | ||
| Number of stock options expired | (47,248) | (14,625) | ||
| Weighted-average grant date fair value of stock options expired | $ 15.94 | $ 10.75 | ||