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Stock-Based Compensation - Phantom (Details) | 9 Months Ended
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Oct. 31, 2014
Deferred Awards | Tranche One |
Share-based Compensation Arrangement by Share-based Payment Award |
Vesting percentage | 25.00%
Deferred Awards | Tranche Two |
Share-based Compensation Arrangement by Share-based Payment Award |
Vesting percentage | 25.00%
Deferred Awards | Tranche Three |
Share-based Compensation Arrangement by Share-based Payment Award |
Vesting percentage | 50.00%
Performance Awards | Tranche One |
Share-based Compensation Arrangement by Share-based Payment Award |
Vesting percentage | 25.00%
Performance Awards | Tranche Two |
Share-based Compensation Arrangement by Share-based Payment Award |
Vesting percentage | 25.00%
Performance Awards | Tranche Three |
Share-based Compensation Arrangement by Share-based Payment Award |
Vesting percentage | 50.00%

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