Business Segments and International Operations - Income from Continuing Operations by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2021	Feb. 29, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	$ 121,280	$ 109,683
Segment costs of revenue and operating expenses	35,496	29,718
Segment contribution margin	85,784	79,965
Other unallocated expenses	58,368	49,253
Income from operations	27,416	30,712
Other expense, net	(2,652)	(3,397)
Income before income taxes	24,764	27,315
OpenEdge
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	84,603	77,079
Segment costs of revenue and operating expenses	18,916	19,750
Segment contribution margin	65,687	57,329
Data Connectivity and Integration
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	5,528	13,685
Segment costs of revenue and operating expenses	1,170	2,680
Segment contribution margin	4,358	11,005
Application Development and Deployment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	31,149	18,919
Segment costs of revenue and operating expenses	15,410	7,288
Segment contribution margin	$ 15,739	$ 11,631