Stock-Based Compensation (Narrative) (Details)
|
6 Months Ended |
May. 31, 2015 |
|---|
| Stock Options [Member] | Minimum [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Stock-based compensation award service period (in years) |
4 years
|
| Stock Options [Member] | Maximum [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Stock-based compensation award service period (in years) |
5 years
|
| Restricted Stock Units [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Award market condition period |
3 years
|
| Stock-based compensation award service period (in years) |
3 years
|