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Share-Based Compensation - Schedule of Stock Options (Details) (Stock Options [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
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12 Months Ended |
|
Jan. 31, 2015
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|
Stock Options [Member]
|
|
| Number of Shares |
|
| Stock Options Outstanding at beginning of period (shares) |
3,234 |
| Stock Options Granted (shares) |
388 |
| Stock Options Exercised (shares) |
0 |
| Stock Options Forfeited or expired (shares) |
(152) |
| Stock Options Outstanding at end of period (shares) |
3,470 |
| Stock Options Expected to Vest at end of period (shares) |
1,132 |
| Stock Options Exercisable at end of period (shares) |
2,310 |
| Grant Date Weighted Average Exercise Price |
|
| Grant Date Weighted Average Exercise Price of Options Outstanding at beginning of period (usd per share) |
$ 18.85 |
| Grant Date Weighted Average Exercise Price of Options Granted (usd per share) |
$ 15.84 |
| Grant Date Weighted Average Exercise Price of Options Exercised (usd per share) |
$ 0.00 |
| Grant Date Weighted Average Exercise Price of Options Forfeited or expired (usd per share) |
$ 20.10 |
| Grant Date Weighted Average Exercise Price of Options Outstanding at end of period (usd per share) |
$ 18.45 |
| Grant Date Weighted Average Exercise Price of Options Expected to Vest at end of period (usd per share) |
$ 18.35 |
| Grant Date Weighted Average Exercise Price of Options Exercisable at end of period (usd per share) |
$ 18.52 |
| Weighted-Average Remaining Contractual Life |
|
| Weighted Average Remaining Contractual Life of Options Outstanding (in years) |
6 years 8 months 12 days |
| Weighted Average Remaining Contractual Life of Options Expected to Vest at end of period (in years) |
8 years 1 month 6 days |
| Weighted Average Remaining Contractual Life of Options Exercisable at end of period (in years) |
6 years 1 month 6 days |
| Aggregate Intrinsic Value |
|
| Aggregate Intrinsic Value of Options Outstanding at end of period |
$ 97 |
| Aggregate Intrinsic Value of Options Expected to Vest at end of period |
47 |
| Aggregate Intrinsic Value of Options Exercisable at end of period |
$ 49 |