Business Segments and International Operations (Income from Continuing Operations by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 30, 2015	Aug. 31, 2015	May. 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May. 31, 2014	Feb. 28, 2014	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue									$ 377,554	$ 332,533	$ 333,996
Total costs of revenue and operating expenses									130,290	92,473	97,684
Total contribution margin									247,264	240,060	236,312
Other unallocated expenses									232,510	159,320	172,572
Income from operations	$ 20,081	$ 8,594	$ (2,735)	$ (11,186)	$ 27,027	$ 19,431	$ 20,280	$ 14,002	14,754	80,740	63,740
Other expense, net									(2,400)	(2,936)	(957)
Income from continuing operations before income taxes									12,354	77,804	62,783
OpenEdge [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue									295,934	296,721	293,508
Total costs of revenue and operating expenses									77,085	70,811	83,675
Total contribution margin									218,849	225,910	209,833
Data Connectivity and Integration [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue									37,926	34,772	40,089
Total costs of revenue and operating expenses									13,819	12,308	12,397
Total contribution margin									24,107	22,464	27,692
Application Development and Deployment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue									43,694	1,040	399
Total costs of revenue and operating expenses									39,386	9,354	1,612
Total contribution margin									$ 4,308	$ (8,314)	$ (1,213)