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Restructuring Charges (Narrative) (Details) (USD $)
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May 31, 2014
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Nov. 30, 2013
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|---|---|---|
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2013 Restructuring Activities [Member]
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| Restructuring Cost and Reserve [Line Items] | ||
| Restructuring reserve | $ 347,000 | $ 1,646,000 |
| Long-term restructuring reserves | 200,000 | |
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2013 Restructuring Activities [Member] | Other accrued liabilities [Member]
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| Restructuring Cost and Reserve [Line Items] | ||
| Restructuring reserve | 100,000 | |
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2012 Restructuring Activities [Member]
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| Restructuring Cost and Reserve [Line Items] | ||
| Restructuring reserve | 397,000 | 906,000 |
| Short-term restructuring reserves | 300,000 | |
| Long-term restructuring reserves | $ 100,000 |