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Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands | Nov. 30, 2016 | Nov. 30, 2015
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Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | $ 192,628 | $ 200,083
Intangible Assets, Accumulated Amortization | (111,801) | (85,970)
Total | 80,827 | 114,113
Purchased Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 109,886 | 117,151
Intangible Assets, Accumulated Amortization | (68,116) | (54,963)
Total | 41,770 | 62,188
Customer Related [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 67,602 | 67,602
Intangible Assets, Accumulated Amortization | (35,852) | (25,493)
Total | 31,750 | 42,109
Trademarks and Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 15,140 | 15,330
Intangible Assets, Accumulated Amortization | (7,833) | (5,514)
Total | $ 7,307 | $ 9,816

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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=66006027&loc=d3e16323-109275 + Details
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