Financial Services (Details) (USD $)	3 Months Ended								12 Months Ended
	Nov. 30, 2014	Aug. 31, 2014	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Financial services:
Insurance commissions									$ 6,566,000	$ 7,177,000	$ 7,140,000
Title services									3,593,000	3,172,000	2,362,000
Marketing services fees									1,147,000	1,800,000	2,175,000
Interest income									0	3,000	6,000
Total									11,306,000	12,152,000	11,683,000
Expenses
Expenses									(3,446,000)	(3,042,000)	(2,991,000)
Operating income (loss)									115,969,000	92,084,000	(20,256,000)
Income (Loss) from Equity Method Investments									1,427,000	(933,000)	1,797,000
Pretax income (loss)	28,601,000	28,661,000	26,924,000	10,763,000	28,316,000	26,578,000	(4,173,000)	(12,358,000)	94,949,000	38,363,000	(79,053,000)
Assets
Cash and cash equivalents	358,768,000				532,523,000				358,768,000	532,523,000	525,688,000	418,074,000
Receivables	125,488,000				75,749,000				125,488,000	75,749,000
Investments in unconsolidated joint ventures	79,441,000				130,192,000				79,441,000	130,192,000
Other assets	114,915,000				107,076,000				114,915,000	107,076,000
Total assets	4,757,550,000				3,193,635,000				4,757,550,000	3,193,635,000
Liabilities
Accounts payable and accrued expenses	582,598,000				504,458,000				582,598,000	504,458,000
Total liabilities	2,517,000				2,593,000				2,517,000	2,593,000
Financial services (Textual) [Abstract]
Equity Method Investment, Realized Gain (Loss) on Disposal										1,100,000	2,100,000
Financial services [Member]
Expenses
Operating income (loss)									7,860,000	9,110,000	8,692,000
Income (Loss) from Equity Method Investments									686,000	1,074,000	2,191,000
Pretax income (loss)									8,546,000	10,184,000	10,883,000
Assets
Cash and cash equivalents	2,402,000				2,428,000				2,402,000	2,428,000	923,000
Receivables	1,738,000				2,084,000				1,738,000	2,084,000
Investments in unconsolidated joint ventures	6,149,000				5,490,000				6,149,000	5,490,000
Other assets	197,000				38,000				197,000	38,000
Total assets	10,486,000				10,040,000				10,486,000	10,040,000
Liabilities
Accounts payable and accrued expenses	2,517,000				2,593,000				2,517,000	2,593,000
Home Community Mortgage LLC [Member]
Segment Reporting Information [Line Items]
General Partners' Contributed Capital					$ 5,000,000					$ 5,000,000