Rialto Segment (Condensed Financial Information By Equity Method Investment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016	Nov. 30, 2016
Segment Reporting Information [Line Items]
Equity in earnings (loss) from unconsolidated entities			$ 12,838	$ 28,424
Rialto
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 80,337		80,337		$ 230,229
Loans receivable	595,149		595,149		406,812
Real estate owned	307,669		307,669		439,191
Investment securities	1,700,572		1,700,572		1,379,155
Investments in partnerships	409,670		409,670		398,535
Other assets	49,452		49,452		29,036
Total assets	3,142,849		3,142,849		2,882,958
Accounts payable and other liabilities	40,239		40,239		36,131
Notes payable	587,813		587,813		532,264
Equity	2,514,797		2,514,797		2,314,563
Total liabilities and equity	3,142,849		3,142,849		2,882,958
Revenues	64,267	$ 51,485	182,453	147,021
Costs and expenses	26,752	24,472	83,753	66,075
Other income (expense), net	245	28,947	9,893	40,495
Net earnings (loss) of unconsolidated entities	37,760	55,960	108,593	121,441
Equity in earnings (loss) from unconsolidated entities	4,858	$ 5,976	11,310	$ 14,337
Debt issuance costs	$ 3,400		$ 3,400		$ 2,900