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Business Segments and International Operations (Revenue from External Customers from Different Geographical Areas) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Feb. 28, 2017 | Feb. 29, 2016
Revenue from External Customer [Line Items] |  |
Total revenue | $ 90,970 | $ 89,481
North America [Member] |  |
Revenue from External Customer [Line Items] |  |
Total revenue | 50,305 | 49,065
EMEA [Member] |  |
Revenue from External Customer [Line Items] |  |
Total revenue | 29,844 | 31,221
Latin America [Member] |  |
Revenue from External Customer [Line Items] |  |
Total revenue | 5,023 | 3,693
Asia Pacific [Member] |  |
Revenue from External Customer [Line Items] |  |
Total revenue | $ 5,798 | $ 5,502

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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