Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013	Nov. 30, 2013
Statements of operations of unconsolidated joint venture
Revenues	$ 0	$ 6,356	$ 6,118	$ 6,356
Construction and land costs	0	(3,928)	(3,523)	(3,928)
Other expenses, net	(908)	(1,036)	(2,038)	(1,891)
Income (loss)	(908)	1,392	557	537
Assets
Cash	21,241		21,241		18,752
Receivables	5,183		5,183		4,902
Inventories	156,085		156,085		381,195
Other assets	149		149		1,183
Total assets	182,658		182,658		406,032
Liabilities and equity
Accounts payable and other liabilities	19,278		19,278		85,386
Equity	163,380		163,380		320,646
Total liabilities and equity	$ 182,658		$ 182,658		$ 406,032