Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income (loss)	$ 12,492	$ (18,320)	$ 88,436	$ 75,120
Other comprehensive income (loss)
Unrealized holding gain (loss) on available-for-sale securities	522	(5,210)	2,101	(3,403)
Reclassification to net income of realized (gain) loss on available-for-sale securities	0	0	(160)	22
Unrealized loss on hedging instruments	(234)	(3,394)	(715)	(5,466)
Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncntrolling and Redeemable Noncontrolling Interest	288	(8,604)	1,226	(8,847)
Comprehensive income (loss)	12,780	(26,924)	89,662	66,273
Comprehensive (income) loss attributable to noncontrolling interest in:
Operating partnership	1,729	9,660	(8,047)	(3,490)
Other consolidated subsidiaries	(6,194)	(6,166)	(17,139)	(18,708)
Comprehensive income (loss) attributable to the Company	$ 8,315	$ (23,430)	$ 64,476	$ 44,075