Rialto Segment Rialto Segment (Equity in Earnings (Loss) on Investments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 24,183	$ 31,385
Real Estate Investment Fund [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	1,339	746
Real Estate Investment Fund II [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	(722)	893
Real Estate Mezanine Fund [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	724	475
Commercial Mortgage Backed Securities [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	372	544
Real Estate Investment Fund III [Member] [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	(239)	0
Other equity method investments [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	23	6
Rialto [Member]
Schedule of Equity in Earnings (Loss) on Investments [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 1,497	$ 2,664