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Business Segments and International Operations (Revenue from External Customers from Different Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Revenue from External Customer [Line Items]
Total revenue	$ 111,333	$ 95,683	$ 96,102	$ 94,047	$ 116,079	$ 97,310	$ 93,213	$ 90,970	$ 397,165	$ 397,572	$ 405,341
United States
Revenue from External Customer [Line Items]
Total revenue									204,151	206,450	212,312
Canada
Revenue from External Customer [Line Items]
Total revenue									15,771	17,492	16,891
EMEA
Revenue from External Customer [Line Items]
Total revenue									137,972	130,359	130,818
Latin America
Revenue from External Customer [Line Items]
Total revenue									17,637	21,158	21,156
Asia Pacific
Revenue from External Customer [Line Items]
Total revenue									$ 21,634	$ 22,113	$ 24,164

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+ References

No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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