Investments in Unconsolidated Joint Ventures (Financial Information for Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014	Nov. 30, 2014
Statements of operations of unconsolidated joint venture
Revenues	$ 3,210	$ 0	$ 6,420	$ 6,118
Construction and land costs	(10,249)	0	(13,992)	(3,523)
Other expenses, net	(715)	(908)	(1,411)	(2,038)
Income (loss)	(7,754)	$ (908)	(8,983)	$ 557
Assets
Cash	14,133		14,133		$ 23,699
Receivables	5,923		5,923		5,106
Inventories	161,015		161,015		153,427
Total assets	181,071		181,071		182,232
Liabilities and equity
Accounts payable and other liabilities	17,420		17,420		10,824
Equity	163,651		163,651		171,408
Total liabilities and equity	$ 181,071		$ 181,071		$ 182,232