Rialto Segment (Condensed Financial Information By Equity Method Investment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015	Nov. 30, 2015
Segment Reporting Information [Line Items]
Equity in earnings (loss) from unconsolidated entities			$ 28,424	$ 70,679
Rialto
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 159,683		159,683		$ 188,147
Loans receivable	396,543		396,543		473,997
Real estate owned	566,012		566,012		506,609
Investment securities	1,284,583		1,284,583		1,092,476
Investments in partnerships	413,836		413,836		429,979
Other assets	41,282		41,282		30,340
Total assets	2,861,939		2,861,939		2,721,548
Accounts payable and other liabilities	27,605		27,605		29,462
Notes payable	562,935		562,935		374,498
Equity	2,271,399		2,271,399		2,317,588
Total liabilities and equity	2,861,939		2,861,939		$ 2,721,548
Revenues	51,485	$ 41,278	147,021	122,336
Costs and expenses	24,472	24,937	66,075	73,024
Other income (expense), net	28,947	60,106	40,495	121,457
Net earnings (loss) of unconsolidated entities	55,960	76,447	121,441	170,769
Equity in earnings (loss) from unconsolidated entities	$ 5,976	$ 7,590	$ 14,337	$ 17,582