Intangible Assets and Goodwill (Schedule of Goodwill) (Details) $ in Thousands	9 Months Ended
Aug. 31, 2016 USD ($)
Goodwill [Roll Forward]
Balance, November 30, 2015	$ 369,985
Translation adjustments	112
Balance, August 31, 2016	370,097
OpenEdge [Member]
Goodwill [Roll Forward]
Balance, November 30, 2015	211,980
Translation adjustments	112
Balance, August 31, 2016	212,092
Data Connectivity and Integration [Member]
Goodwill [Roll Forward]
Balance, November 30, 2015	19,040
Translation adjustments	0
Balance, August 31, 2016	19,040
Application Development and Deployment [Member]
Goodwill [Roll Forward]
Balance, November 30, 2015	138,965
Translation adjustments	0
Balance, August 31, 2016	$ 138,965

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant