Segment Information (Details 3) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Residential Development Activities [Member]	Sep. 30, 2011 Residential Development Activities [Member]	Sep. 30, 2012 Residential Development Activities [Member]	Sep. 30, 2011 Residential Development Activities [Member]
Income (Loss) From Discontinued Operations
Revenue from sales of real estate							$ 1,800,000
Cost of sales of real estate							(558,000)
Litigation charge	14,216,000	12,260,000	4,460,000			(12,260,000)
Other income (expense), net				(194,000)	1,000	(584,000)	11,000
(Loss) income from discontinued operations before income tax				(194,000)	1,000	(12,844,000)	1,253,000
Income tax expense on discontinued operations
(Loss) income from discontinued operations, net of income tax expense				$ (194,000)	$ 1,000	$ (12,844,000)	$ 1,253,000