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Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | Feb. 28, 2014 | Nov. 30, 2013
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 64,326 | $ 64,336
Accumulated Amortization | (55,069) | (54,386)
Net Book Value | 9,257 | 9,950
Purchased technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 44,780 | 44,793
Accumulated Amortization | (37,226) | (36,712)
Net Book Value | 7,554 | 8,081
Customer-related and other [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 19,546 | 19,543
Accumulated Amortization | (17,843) | (17,674)
Net Book Value | $ 1,703 | $ 1,869

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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