Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018	Nov. 30, 2018
Statements of operations of unconsolidated joint venture
Revenues		$ 5,729	$ 35,391	$ 21,707	$ 52,015
Construction and land costs		(5,686)	(22,211)	(21,704)	(38,866)
Other expense, net		(708)	(226)	(1,946)	(2,209)
Income (loss)		(665)	$ 12,954	(1,943)	$ 10,940
Assets
Cash		27,282		27,282		$ 18,567
Inventories		134,524		134,524		131,074
Other assets		969		969		530
Total assets		162,775		162,775		150,171
Liabilities and equity
Accounts payable and other liabilities		14,133		14,133		11,374
Notes payable	[1]	37,340		37,340		17,956
Equity		111,302		111,302		120,841
Total liabilities and equity		$ 162,775		$ 162,775		$ 150,171

[1] As of August 31, 2019 and November 30, 2018, one of our unconsolidated joint ventures had a construction loan agreement with a third-party lender to finance its land development activities, with the outstanding debt secured by the underlying property and related project assets and non-recourse to us. All of the outstanding secured debt at August 31, 2019 is scheduled to mature in February 2020. None of our other unconsolidated joint ventures had outstanding debt at August 31, 2019 or November 30, 2018.