Other Assets Components Of Other Assets (Details) (USD $)	3 Months Ended
	Mar. 31, 2011	Sep. 30, 2012	Dec. 31, 2011
Other Assets [Abstract]
Notes receivable (see Note 3)		$ 19,386,000	$ 17,508,000
Equity method investments		12,959,000	4,338,000
Deferred financing fees		11,729,000	3,351,000
Land held for sale		1,300,000	1,300,000
Other		7,897,000	2,787,000
Total		53,271,000	29,284,000
Number Of Parcels Of Land	1
Impairment of Long-Lived Assets to be Disposed of	(1,800,000)
Change During Period, Fair Value Disclosure [Member]
Other Assets [Abstract]
Land held for sale	1,800,000
Other Assets [Member]
Other Assets [Abstract]
Other		1,300,000
Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]
Other Assets [Abstract]
Other		0
Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]
Other Assets [Abstract]
Other		1,300,000
Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]
Other Assets [Abstract]
Other		$ 0