CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating activities
Net loss	$ (212,003)	$ (13,407)	$ (22,165)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation and amortization	57,002	28,961	28,295
Depreciation and amortization - discontinued operations	54,148	63,350	64,431
Amortization of above (below) market leases	2,955	(163)	(163)
Amortization of above (below) market leases - discontinued operations	(1,865)	(403)	214
Amortization of loan costs	2,144	1,713	2,319
Amortization of mortgage loan discount	(400)	(710)	(607)
Share-based compensation expense	1,341	1,319	2,581
Deferred income tax benefit	(430)	0	0
Operating distributions from unconsolidated joint ventures	507	0	392
Gain on sale of real estate investments	(18,568)	(8,558)	(1,293)
Non-cash impairment loss on real estate	6,420	0	8,817
Non-cash impairment loss on real estate - discontinued operations	189,940	4,120	0
Non-cash impairment loss on mortgage loan receivable	9,235	0	0
Non-cash gain on mortgage loan payable	(8,601)	0	0
Equity in earnings of unconsolidated joint ventures	(57)	(326)	(445)
Change in fair value of contingent consideration	(13,000)	0	0
Increase in deferred leasing costs	(16,947)	(13,425)	(16,348)
Change in receivables and other assets	(19,737)	(4,194)	3,678
Change in accounts payable and other liabilities	3,443	9,782	228
Cash provided by operating activities	35,527	68,059	69,934
Investing activities
Distributions from unconsolidated joint ventures	3,201	0	0
Investment in real estate	(491,279)	(36,498)	1,033
Investment in other assets	(3,500)	0	0
Investment in management company	(32,400)	0	0
Proceeds from sale of real estate	200,193	4,758	15,542
Proceeds from property insurance settlement	0	0	1,984
Real estate development	0	0	(5,329)
Improvements to real estate	(41,811)	(36,335)	(28,420)
Cash used in investing activities	(365,596)	(68,075)	(15,190)
Financing activities
Principal payments on mortgage notes payable	(106,567)	(140,499)	(35,381)
Proceeds from mortgage notes payable	222,013	70,000	18,500
Proceeds from bank borrowings	286,655	143,750	35,742
Payments on bank borrowings	(265,172)	(132,911)	(121,682)
Debt financing costs	(4,858)	(1,004)	(406)
Purchase of Company stock	(397)	(821)	(58)
Dividends paid on common stock	(6,552)	(6,448)	(25,794)
Dividends paid on preferred stock	(9,529)	(5,787)	(4,800)
Contributions from noncontrolling interest partners	287,501	27,912	57
Distributions to noncontrolling interest partners	(43,546)	0	0
Proceeds from stock offering	26,034	44,797	84,457
Cash provided by (used in) financing activities	385,582	(1,011)	(49,365)
Change in cash and cash equivalents	55,513	(1,027)	5,379
Cash and cash equivalents at beginning of year	19,670	20,697	15,318
Cash and cash equivalents at end of year	$ 75,183	$ 19,670	$ 20,697