Business Segments and International Operations (Income from Continuing Operations by Segment) (Details) $ in Thousands	3 Months Ended			6 Months Ended
	May 31, 2019 USD ($)	May 31, 2018 USD ($)		May 31, 2019 USD ($) segment	May 31, 2018 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment				3
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	$ 99,995	$ 92,864	[1]	$ 189,544	$ 188,274	[1]
Segment costs of revenue and operating expenses	26,450	22,886		51,692	47,075
Segment contribution margin	73,545	69,978		137,852	141,199
Other unallocated expenses	58,804	51,428		107,702	103,518
Income from operations	14,741	18,550	[1]	30,150	37,681	[1]
Other expense, net	(2,317)	(1,284)	[1]	(4,320)	(2,869)	[1]
Income before income taxes	12,424	17,266	[1]	25,830	34,812	[1]
OpenEdge
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	67,820	69,607		133,072	136,270
Segment costs of revenue and operating expenses	19,097	15,013		37,412	30,775
Segment contribution margin	48,723	54,594		95,660	105,495
Data Connectivity and Integration
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	12,932	3,411		18,932	12,903
Segment costs of revenue and operating expenses	1,806	1,674		3,306	3,303
Segment contribution margin	11,126	1,737		15,626	9,600
Application Development and Deployment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	19,243	19,846		37,540	39,101
Segment costs of revenue and operating expenses	5,547	6,199		10,974	12,997
Segment contribution margin	$ 13,696	$ 13,647		$ 26,566	$ 26,104

[1] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.