Segment Information (Revenue And Income (Losses) From Operations For Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 29, 2012	Feb. 28, 2011
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	$ 124,426	$ 134,237
Total income (loss) from operations	11,894	28,316
Amortization of acquired intangibles	(5,555)	(6,249)
Stock-based compensation	(7,091)	(4,184)
Transition expense		(424)
Restructuring expense		(2,114)
Acquisition-related expense	(215)
Litigation settlement	(900)
Proxy-related costs	(472)
Application Development Platform Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	75,569	79,077
Total income (loss) from operations	41,781	46,656
Enterprise Business Solutions Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	30,894	37,127
Total income (loss) from operations	(20,666)	(6,881)
Enterprise Data Solutions Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	17,963	18,033
Total income (loss) from operations	$ 5,012	$ 1,512