Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUES:
Minimum rents	$ 160,788	$ 170,914
Percentage rents	3,466	3,740
Other rents	5,313	5,008
Tenant reimbursements	70,487	76,810
Management, development and leasing fees	2,469	1,337
Other	8,149	9,360
Total revenues	250,672	267,169
OPERATING EXPENSES:
Property operating	38,361	40,159
Depreciation and amortization	63,157	67,699
Real estate taxes	22,846	24,326
Maintenance and repairs	13,156	16,008
General and administrative	13,800	11,800
Other	6,758	8,303
Total operating expenses	158,078	168,295
Income from operations	92,594	98,874
Interest and other income	1,075	545
Interest expense	(60,060)	(68,213)
Gain on extinguishment of debt	0	581
Gain on sales of real estate assets	587	809
Equity in earnings of unconsolidated affiliates	1,266	1,778
Income tax benefit	228	1,770
Income from continuing operations	35,690	36,144
Operating income (loss) of discontinued operations	(50)	27,750
Gain on discontinued operations	911	14
Net income	36,551	63,908
Net (income) loss attributable to noncontrolling interests in:
Operating partnership	(4,362)	(10,451)
Other consolidated subsidiaries	(6,140)	(6,138)
Net income attributable to the Company	26,049	47,319
Preferred dividends	(10,594)	(10,594)
Net income attributable to common shareholders	15,455	36,725
Basic per share data attributable to common shareholders:
Income from continuing operations, net of preferred dividends	$ 0.10	$ 0.10
Discontinued operations	$ 0.00	$ 0.15
Net income attributable to common shareholders	$ 0.10	$ 0.25
Weighted average common shares outstanding	148,495	148,069
Diluted earnings per share data attributable to common shareholders:
Income from continuing operations, net of preferred dividends	$ 0.10	$ 0.10
Discontinued operations	$ 0.00	$ 0.15
Net income attributable to common shareholders	$ 0.10	$ 0.25
Weighted average common and potential dilutive common shares outstanding	148,538	148,123
Amounts attributable to common shareholders:
Income from continuing operations, net of preferred dividends	14,783	15,112
Discontinued operations	672	21,613
Net income attributable to common shareholders	$ 15,455	$ 36,725
Dividends declared per common share	$ 0.22	$ 0.21