Other Assets Components Of Other Assets (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Other Assets, Noncurrent [Abstract]
Notes receivable (see Note 3)	$ 35,425,000		$ 35,103,000
Equity method investments	28,140,000		27,453,000
Deferred financing fees	10,619,000		11,174,000
Land held for sale	1,300,000		1,300,000
Other assets	865,000		983,000
Total	76,349,000		76,013,000
Variable Interest Entity, Consolidated, Carrying Amount, Assets	24,200,000		24,300,000
Net income (loss) attributable to variable interest entities	$ 100,000	$ 0