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Business Segments and International Operations (Revenue from External Customers from Different Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended
	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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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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

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