Business Segments and International Operations (Income from Continuing Operations by Segment) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2015 USD ($)	Aug. 31, 2014 USD ($)	Aug. 31, 2015 USD ($) Segments	Aug. 31, 2014 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Number of reporting units | Segments			3
Segment revenue	$ 94,637	$ 79,274	$ 264,836	$ 234,639
Segment costs of revenue and operating expenses	31,663	20,485	96,261	62,445
Segment contribution margin	62,974	58,789	168,575	172,194
Other unallocated expenses	54,380	39,358	173,903	118,481
Income (loss) from operations	8,594	19,431	(5,328)	53,713
Other (expense) income, net	(1,165)	(2,457)	(1,258)	(2,581)
Income (loss) before income taxes	7,429	16,974	(6,586)	51,132
OpenEdge [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	73,398	71,847	214,775	211,773
Segment costs of revenue and operating expenses	18,550	15,524	56,529	48,770
Segment contribution margin	54,848	56,323	158,246	163,003
Data Connectivity and Integration [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	8,281	7,175	22,669	22,221
Segment costs of revenue and operating expenses	3,180	2,515	9,563	7,913
Segment contribution margin	5,101	4,660	13,106	14,308
Application Development and Deployment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	12,958	252	27,392	645
Segment costs of revenue and operating expenses	9,933	2,446	30,169	5,762
Segment contribution margin	$ 3,025	$ (2,194)	$ (2,777)	$ (5,117)