Financial Services (Schedule of Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Segment Reporting Information [Line Items]
Interest and Other Income	$ 0	$ 0	$ 0	$ 5
Revenues
Insurance commissions	1,463	1,408	2,815	2,618
Title services	1,287	1,314	2,353	2,449
Total	2,750	2,722	5,168	5,072
Expenses
General and administrative	(957)	(816)	(1,910)	(1,635)
Operating income	74,198	49,559	118,201	74,836
Equity in income of unconsolidated joint ventures			613	1,075
Total pretax income (loss)	78,308	51,982	124,353	73,441
Financial services [Member]
Expenses
Operating income	1,793	1,906	3,258	3,437
Equity in income of unconsolidated joint ventures	1,361	911	1,780	940
Total pretax income (loss)	$ 3,154	$ 2,817	$ 5,038	$ 4,377