Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
REVENUES
Base rents	$ 149,700	$ 150,064	$ 448,775	$ 452,449
Escalations and recoveries from tenants	21,601	26,420	73,211	78,376
Construction services	2,359	16,475	8,984	49,694
Real estate services	1,354	2,014	3,737	5,660
Other income	2,141	2,983	9,885	9,145
Total revenues	177,155	197,956	544,592	595,324
EXPENSES
Real estate taxes	14,503	24,913	63,934	72,986
Utilities	20,144	20,831	57,136	57,066
Operating services	28,014	27,345	87,478	84,099
Direct construction costs	2,290	15,884	8,656	47,588
General and administrative	8,683	8,992	26,538	26,064
Depreciation and amortization	48,498	47,978	144,914	143,942
Total expenses	122,132	145,943	388,656	431,745
Operating income	55,023	52,013	155,936	163,579
OTHER (EXPENSE) INCOME
Interest expense	(31,489)	(36,941)	(94,191)	(113,347)
Interest and other investment income	10	34	30	73
Equity in earnings (loss) of unconsolidated joint ventures	539	475	1,174	213
Total other (expense) income	(30,940)	(36,432)	(92,987)	(113,061)
Income from continuing operations	24,083	15,581	62,949	50,518
Discontinued operations:
Income (loss) from discontinued operations				242
Realized gains (losses) and unrealized losses on disposition of rental property, net				4,447
Total discontinued operations, net				4,689
Net income	24,083	15,581	62,949	55,207
Noncontrolling interest in consolidated joint ventures	96	108	308	281
Noncontrolling interest in Operating Partnership	(3,015)	(2,150)	(8,031)	(7,047)
Noncontrolling interest in discontinued operations				(668)
Preferred stock dividends	(664)	(500)	(1,664)	(1,500)
Net income available to common shareholders	$ 20,500	$ 13,039	$ 53,562	$ 46,273
Basic earnings per common share:
Income from continuing operations	$ 0.24	$ 0.16	$ 0.63	$ 0.53
Discontinued operations				$ 0.05
Net income available to common shareholders	$ 0.24	$ 0.16	$ 0.63	$ 0.58
Diluted earnings per common share:
Income from continuing operations	$ 0.24	$ 0.16	$ 0.62	$ 0.53
Discontinued operations				$ 0.05
Net income available to common shareholders	$ 0.24	$ 0.16	$ 0.62	$ 0.58
Basic weighted average shares outstanding	87,019	79,304	85,649	79,161
Diluted weighted average shares outstanding	99,917	92,464	98,631	92,467