Business Segments and International Operations (Income from Continuing Operations by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	$ 102,018	$ 94,637	$ 287,617	$ 264,836
Segment costs of revenue and operating expenses	32,029	31,663	91,957	96,261
Segment contribution margin	69,989	62,974	195,660	168,575
Other unallocated expenses	56,383	54,380	163,005	173,903
Income (loss) from operations	13,606	8,594	32,655	(5,328)
Other (expense) income, net	(1,288)	(1,165)	(4,474)	(1,258)
Income (loss) before income taxes	12,318	7,429	28,181	(6,586)
OpenEdge [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	67,534	73,398	198,595	214,775
Segment costs of revenue and operating expenses	18,180	18,550	53,539	56,529
Segment contribution margin	49,354	54,848	145,056	158,246
Data Connectivity and Integration [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	14,251	8,281	30,852	22,669
Segment costs of revenue and operating expenses	2,828	3,180	8,863	9,563
Segment contribution margin	11,423	5,101	21,989	13,106
Application Development and Deployment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenue	20,233	12,958	58,170	27,392
Segment costs of revenue and operating expenses	11,021	9,933	29,555	30,169
Segment contribution margin	$ 9,212	$ 3,025	$ 28,615	$ (2,777)