Divestitures (Gain on Sale) (Details) (USD $)	3 Months Ended
	Feb. 28, 2013	Feb. 29, 2012
Less: net assets
Gain on sale	$ 35,106,000	$ 0
Gain on sale, net of tax	19,757,000	0
Artix, Orbacus and Orbix [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase price	15,000,000
Less: transaction costs	826,000
Less: indemnification obligation	1,000,000
Less: net assets
Accounts receivables	2,300,000
Goodwill and intangible assets	24,325,000
Other assets	20,000
Impairment reserve	(8,601,000)
Deferred revenue	(5,893,000)
Gain on sale	1,023,000
Tax provision	0
Gain on sale, net of tax	1,023,000
Actional, DataXtend, ObjectStore, Savvion, and Sonic [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase price	60,500,000
Less: transaction costs	1,211,000
Less: net assets
Accounts receivables	12,004,000
Goodwill and intangible assets	31,693,000
Other assets	976,000
Deferred revenue	(19,168,000)
Other liabilities	(299,000)
Gain on sale	34,083,000
Tax provision	15,349,000
Gain on sale, net of tax	$ 18,734,000