Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2015	Aug. 31, 2014	Nov. 30, 2014
Statements of operations of unconsolidated joint venture
Revenues		$ 3,338	$ 0	$ 9,758	$ 6,118
Construction and land costs		(3,381)	0	(17,373)	(3,523)
Other expenses, net		(753)	(1,050)	(2,164)	(3,088)
Income (loss)		(796)	$ (1,050)	(9,779)	$ (493)
Assets
Cash		23,454		23,454		$ 23,699
Receivables		7,631		7,631		5,106
Inventories		169,471		169,471		153,427
Other Assets		658		658		0
Total assets		201,214		201,214		182,232
Liabilities and equity
Accounts payable and other liabilities		16,832		16,832		10,824
Equity Method Investments Summarized Financial Information Debt	[1]	31,963		31,963		0
Equity		152,419		152,419		171,408
Total liabilities and equity		$ 201,214		$ 201,214		$ 182,232

[1] (a)On August 28, 2015, one of our unconsolidated joint ventures entered into a construction loan agreement with a third-party lender to finance its land development activities that is secured by the underlying property and related project assets. The unconsolidated joint venture’s outstanding secured debt is non-recourse to us and is scheduled to mature in August 2018. None of our other unconsolidated joint ventures had outstanding debt at August 31, 2015. None of our unconsolidated joint ventures had outstanding debt at November 30, 2014.