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Intangible Assets and Goodwill (Narrative) (Details) (USD $)
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3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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May 31, 2014
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May 31, 2013
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May 31, 2014
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May 31, 2013
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| Goodwill and Intangible Assets Disclosure [Abstract] | ||||
| Intangible assets, amortization expense | $ 700,000 | $ 300,000 | $ 1,400,000 | $ 600,000 |
| Goodwill impairment loss | $ 0 | |||