Divestitures (Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended		12 Months Ended	9 Months Ended
	Jul. 31, 2013 Apama [Member]	Aug. 31, 2013 Apama [Member]	Aug. 31, 2013 Artix, Orbacus and Orbix [Member]	Nov. 30, 2012 Artix, Orbacus and Orbix [Member]	Aug. 31, 2013 Actional, DataXtend, ObjectStore, Savvion, and Sonic [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration	$ 44,268,000	$ 44,268,000	$ 15,000,000		$ 60,500,000
Disposal Group, Including Discontinued Operations, Consideration Held in Escrow	4,500,000
Carrying value of indemnification obligation			1,000,000
Period to be held in escrow to secure indemnification claims	18 months
Period of distributor license agreement		3 years
Reduction of purchase price	700,000
Indemnification obligation, maximum potential exposure			11,300,000
Impairment loss on assets held for sale				$ 8,601,000