|
Common Stock Options (Schedule of Stock Option Activity Under Plan) (Details) (USD $)
|
3 Months Ended |
12 Months Ended |
|
May 04, 2013
|
Feb. 02, 2013
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |
|
|
| Options outstanding, Beginning balance (shares) |
1,187,817 |
|
| Options outstanding, Granted (shares) |
122,250 |
|
| Options outstanding, Forfeited (shares) |
(4,843) |
|
| Options outstanding, Exercised (shares) |
(36,781) |
|
| Options outstanding, Ending balance (shares) |
1,268,443 |
1,187,817 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |
|
|
| Weighted average exercise price, Beginning balance (dollars per share) |
$ 10.43 |
|
| Weighted average exercise price, Granted (dollars per share) |
$ 37.22 |
|
| Weighted average exercise price, Forfeited (dollars per share) |
$ 4.95 |
|
| Weighted average exercise price, Exercised (dollars per share) |
$ 4.28 |
|
| Weighted average exercise price, Ending balance (dollars per share) |
$ 13.21 |
$ 10.43 |
| Options outstanding, Exercisable (shares) |
56,158 |
|
| Options Exercisable, Weighted average exercise price, (dollars per share) |
$ 10.73 |
|
| Options Outstanding, Weighted average remaining contractual term (years) |
8 years 10 months 24 days |
9 years 3 months 18 days |
| Options Exercisable, Weighted average remaining contractual term (years) |
7 years 2 months 12 days |
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