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Stock-Based Compensation (Narrative) (Details)
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6 Months Ended |
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May 31, 2014
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Stock Options [Member] | Minimum [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Stock-based compensation award service period (in years) | 4 years |
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Stock Options [Member] | Maximum [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Stock-based compensation award service period (in years) | 5 years |
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Restricted Stock Units [Member]
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| 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 |
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Restricted Stock [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Stock-based compensation award service period (in years) | 3 years |