Divestitures (Gain on Sale) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012	Jul. 31, 2013 Apama [Member]	Aug. 31, 2013 Apama [Member]	Aug. 31, 2013 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]
Purchase price					$ 44,268	$ 44,268	$ 15,000	$ 60,500
Less: transaction costs						2,029	826	1,211
Less: indemnification obligation							1,000
Less: net assets
Accounts receivables						2,426	2,300	12,004
Disposal Group, Including Discontinued Operation, Consideration Transferred, Other Current Assets						428
Goodwill and intangible assets						6,991	24,325	31,693
Disposal Group, Including Discontinued Operation, Consideration Transferred, Other Noncurrent Assets						426
Other assets							20	976
Impairment reserve							(8,601)
Deferred revenue						(3,917)	(5,893)	(19,168)
Other liabilities								(299)
Gain on sale			70,991	0		35,885	1,023	34,083
Tax provision						13,815	0	15,349
Gain on sale, net of tax	$ 22,070	$ 0	$ 41,827	$ 0		$ 22,070	$ 1,023	$ 18,734