Rialto Segment Rialto Segment (Equity in Earnings (Loss) on Investments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities			$ 28,424	$ 70,679
Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 5,976	$ 7,590	14,337	17,582
Rialto Real Estate Fund, LP | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	1,127	4,158	3,397	7,948
Rialto Real Estate Fund II, LP | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	2,672	2,354	4,420	5,533
Rialto Mezzanine Partners Fund, LP | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	703	637	2,128	1,563
Rialto Capital CMBS Funds | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	1,471	429	3,051	2,506
Rialto Real Estate Fund III | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	4	0	1,387	0
Rialto Credit Partnership, LP | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	(1)	0	(13)	0
Other investments | Rialto
Schedule of Equity Method Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 0	$ 12	$ (33)	$ 32