Other Assets Components Of Other Assets (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2011 parcelofland	Dec. 31, 2012	Dec. 31, 2011
Other Assets [Abstract]
Notes Receivable		$ 35,103,000	$ 17,508,000
Equity method investments		27,453,000	4,338,000
Deferred financing fees		11,174,000	3,351,000
Land held for sale		1,300,000	1,300,000
Other assets		983,000	2,787,000
Total		76,013,000	29,284,000
Number Of Parcels Of Land	1
Impairment of Long-Lived Assets to be Disposed of	(1,800,000)
Variable Interest Entity, Consolidated, Carrying Amount, Assets		24,300,000
Net Income (Loss) Attributable to Variable Interest Entities		100,000
Other Assets [Member]
Other Assets [Abstract]
Other assets		1,300,000
Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]
Other Assets [Abstract]
Other assets		0
Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]
Other Assets [Abstract]
Other assets		1,300,000
Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]
Other Assets [Abstract]
Other assets		0
Change During Period, Fair Value Disclosure [Member]
Other Assets [Abstract]
Land held for sale	$ 1,800,000