Rialto Segment (Equity in Earnings (Loss) on Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 105,184	$ 73,376	$ 45,885
Real Estate Investment Fund [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	9,676	30,612	19,391
Real Estate Investment Fund II [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	7,440	15,929	2,523
Real Estate Investment Fund III [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	(78)	0	0
Real Estate Mezanine Fund [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	2,194	1,913	354
Commercial Mortgage Backed Securities [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	3,013	10,823	0
Other equity method investments [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	48	0	85
Rialto [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 22,293	$ 59,277	$ 22,353