Investments in Unconsolidated Joint Ventures (Condensed Information of Unconsolidated Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2010
Statements of Operations of Unconsolidated Joint Ventures
Revenues	$ 31,772	$ 230	$ 122,200
Construction and land costs	(21,467)	(54)	(120,010)
Other expense, net	(2,009)	(4,506)	(19,362)
Income (loss)	8,296	(4,330)	(17,172)
Assets
Cash	29,721	8,923
Receivable	6,104	19,503
Inventories	352,791	368,306
Other assets	1,175	151
Total assets	389,791	396,883
Liabilities and equity
Accounts payable and other liabilities	88,027	96,981
Equity	301,764	299,902
Total liabilities and equity	$ 389,791	$ 396,883