Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities
Net loss	$ (93,274)	$ (177,196)
Adjustments to reconcile net loss to net cash flows provided by operating activities:
Asset impairment losses	25,086	88,986
Gain on sale or transfer of assets	(362)	(1,385)
Gain on sale or transfer of discontinued operations	(19,868)	(15,986)
Gain on troubled debt restructuring	(3,591)	(4,907)
Loss on derivatives	28
Depreciation and amortization	147,856	168,515
Amortization of lease intangibles	592	1,297
Amortization of above/below market rent	(9,411)	(15,400)
Amortization of deferred financing and mark-to-market costs	5,800	4,045
Equity in (earnings) losses of investments	(1,327)	2,186
Ownership portion of management fees from unconsolidated companies	333
Distributions from investments	556	501
Change in accounts receivable	(11,818)	(16,269)
Change in prepaid expenses and other assets	(4,988)	(2,416)
Change in lease commissions	(13,808)	(24,476)
Change in other lease intangibles	(2,311)	(2,243)
Change in other intangibles	(1,445)
Change in accounts payable	(388)	1,600
Change in accrued liabilities	4,618	(2,386)
Change in other liabilities	944	2,398
Change in payables to related parties	30	(685)
Cash provided by operating activities	23,252	6,179
Cash flows from investing activities
Return of investments	2,270	561
Purchases of real estate		(1,035)
Investments in unconsolidated entities	(730)	(4,057)
Capital expenditures for real estate	(51,415)	(42,893)
Capital expenditures for real estate under development	(454)
Proceeds from notes receivable		10,355
Proceeds from sale of discontinued operations	111,142	91,367
Proceeds from sale of assets		92,982
Change in restricted cash	15,460	2,600
Cash provided by investing activities	76,273	149,880
Cash flows from financing activities
Financing costs	(40)	(6,174)
Proceeds from notes payable	34,500	286,000
Payments on notes payable	(125,989)	(524,377)
Payments on capital lease obligations	(44)	(61)
Redemptions of common stock	(3,062)	(3,212)
Offering costs	(9)	(11)
Distributions to common stockholders	(12,522)	(12,212)
Distributions to noncontrolling interests	(400)	(38)
Cash used in financing activities	(107,566)	(260,085)
Net change in cash and cash equivalents	(8,041)	(104,026)
Cash and cash equivalents at beginning of period	12,073	139,139
Cash and cash equivalents at end of period	$ 4,032	$ 35,113