Intangible Assets and Goodwill (Summary of Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2019		Nov. 30, 2018
Goodwill [Roll Forward]
Balance, beginning of year	$ 314,992	[1]	$ 315,041
Additions	117,871		0
Translation adjustments	(39)		(49)
Balance, end of year	432,824		314,992	[1]
OpenEdge
Goodwill [Roll Forward]
Balance, beginning of year	248,987
Additions	117,871
Translation adjustments	(39)
Balance, end of year	366,819		248,987
Data Connectivity and Integration
Goodwill [Roll Forward]
Balance, beginning of year	19,040
Additions	0
Balance, end of year	19,040		19,040
Application Development and Deployment
Goodwill [Roll Forward]
Balance, beginning of year	46,965
Additions	0
Balance, end of year	$ 46,965		$ 46,965

[1] The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.