Other Current Assets Fair Value Measurements Using (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Mar. 31, 2011	Sep. 30, 2010	Sep. 30, 2011		Sep. 30, 2010	Dec. 31, 2010
Inventory, Land Held-for-sale	$ 8,288,000				$ 8,288,000			$ 11,089,000
Impairment of Long-Lived Assets to be Disposed of			1,800,000
Land held for sale	2,052,000				2,052,000			851,000
Land held for sale Total Gains (Losses)	(2,673,000)			1,510,000	(3,678,000)		1,289,000
Change During Period, Fair Value Disclosure [Member]
Inventory, Land Held-for-sale			1,800,000
Quoted Prices In Active Markets for Identical Assets Level 1 | Other Assets [Member]
Land held for sale	0	[1]			0	[1]
Significant Other Observable Inputs Level 2 | Other Assets [Member]
Land held for sale	1,300,000	[1]			1,300,000	[1]
Significant Unobservable Inputs Level 3 | Other Assets [Member]
Land held for sale	0	[1]			0	[1]
Other Assets [Member]
Land held for sale	1,300,000	[1]			1,300,000	[1]
Land held for sale Total Gains (Losses)					$ (1,800,000)	[1]

[1] Included in Other Assets