Rialto Segment (Condensed Financial Information By Equity Method Investment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Nov. 30, 2016
Segment Reporting Information [Line Items]
Equity in earnings (loss) from unconsolidated entities	$ 12,335	$ 24,183
Rialto
Segment Reporting Information [Line Items]
Cash and cash equivalents	150,154		$ 230,229
Loans receivable	418,802		406,812
Real estate owned	393,601		439,191
Investment securities	1,405,256		1,379,155
Investments in partnerships	430,844		398,535
Other assets	47,090		29,036
Total assets	2,845,747		2,882,958
Accounts payable and other liabilities	51,959		36,131
Notes payable	557,712		532,264
Equity	2,236,076		2,314,563
Total liabilities and equity	2,845,747		2,882,958
Revenues	57,156	44,296
Costs and expenses	28,001	20,899
Other income (expense), net	327	(15,162)
Net earnings (loss) of unconsolidated entities	29,482	8,235
Equity in earnings (loss) from unconsolidated entities	722	$ 1,497
Debt issuance costs	$ (2,900)		$ (2,900)