Financial Services (Schedule of Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017
Segment Reporting Information [Line Items]
Interest and Other Income	$ 0	$ 0	$ 0	$ 5
Revenues
Insurance commissions	1,928	1,897	4,743	4,515
Title services	1,544	1,317	3,897	3,766
Total	3,472	3,214	8,640	8,286
Expenses
General and administrative	(945)	(890)	(2,855)	(2,525)
Operating income	105,613	76,691	223,814	151,527
Equity in income of unconsolidated joint ventures			6,691	921
Total pretax income (loss)	114,676	79,208	239,029	152,649
Financial services [Member]
Expenses
Operating income	2,527	2,324	5,785	5,761
Equity in income of unconsolidated joint ventures	2,585	660	4,365	1,600
Total pretax income (loss)	$ 5,112	$ 2,984	$ 10,150	$ 7,361