Divestitures (Gain on Sale) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2013	May 31, 2012
Less: net assets
Gain on sale			$ 35,106	$ 0
Gain on sale, net of tax	0	0	19,757	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
Less: transaction costs			826
Less: indemnification obligation			1,000
Less: net assets
Accounts receivables			2,300
Goodwill and intangible assets			24,325
Other assets			20
Impairment reserve			(8,601)
Deferred revenue			(5,893)
Gain on sale			1,023
Tax provision			0
Gain on sale, net of tax			1,023
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
Less: transaction costs			1,211
Less: net assets
Accounts receivables			12,004
Goodwill and intangible assets			31,693
Other assets			976
Deferred revenue			(19,168)
Other liabilities			(299)
Gain on sale			34,083
Tax provision			15,349
Gain on sale, net of tax			$ 18,734