Business Segments and International Operations (Revenue from External Customers by Product) (Details) - USD ($) $ in Thousands	3 Months Ended
Feb. 29, 2020	Feb. 28, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 109,683	$ 89,549
Software licenses
Segment Reporting Information [Line Items]
Total revenue	30,629	22,802
Transferred at Point in Time \| Software licenses
Segment Reporting Information [Line Items]
Total revenue	30,629	22,802
Transferred over Time \| Maintenance
Segment Reporting Information [Line Items]
Total revenue	70,056	59,999
Transferred over Time \| Services
Segment Reporting Information [Line Items]
Total revenue	$ 8,998	$ 6,748

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration