Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011		Sep. 30, 2010
Revenues:
Rental and other property	$ 118,118	$ 103,368	$ 345,984		$ 301,804
Management and other fees from affiliates	1,940	959	4,585		3,458
Total revenues	120,058	104,327	350,569		305,262
Expenses:
Property operating, excluding real estate taxes	30,048	27,600	87,616		77,259
Real estate taxes	11,301	10,106	32,896		29,306
Depreciation	38,137	31,531	112,563		93,068
General and administrative	6,066	6,175	18,551		17,988
Impairment and other charges	0	1,615	0		1,615
Total Expenses	85,552	77,027	251,626		219,236
Earnings from operations	34,506	27,300	98,943		86,026
Interest expense before amortization	(22,096)	(21,025)	(66,612)		(61,085)
Amortization expense	(2,936)	(1,177)	(8,527)		(2,958)
Interest and other income	2,741	5,788	12,357		20,730
Equity income (loss) in co-investments	317	(626)	(330)		(1,027)
Loss on early retirement of debt	(567)	0	(820)		(10)
Income before discontinued operations	11,965	10,260	35,011		41,676
Income from discontinued operations, net of expense	(880)	166	4,637		478
Net income	11,085	10,426	39,648		42,154
Net income attributable to noncontrolling interest	(2,031)	(3,506)	(7,882)		(11,540)
Net income attributable to controlling interest	9,054	6,920	31,766		30,614
Dividends to preferred stockholders	(1,367)	(543)	(3,385)		(1,628)
Excess of cash paid to redeem preferred stock and units over the carrying value	0	0	(1,949)		0
Net income available to common stockholders	$ 7,687	$ 6,377	$ 26,432		$ 28,986
Income available to common stockholders (in dollars per share)	$ 0.26	$ 0.21	$ 0.69		$ 0.97
(Loss) income from discontinued operations (in dollars per share)	$ (0.03)	$ 0	$ 0.13	[1]	$ 0.02
Net income available to common stockholders (in dollars per share)	$ 0.23	$ 0.21	$ 0.82		$ 0.99
Weighted average number of common shares outstanding during the period (in shares)	33,121,728	29,690,910	32,215,549		29,334,359
Income before discontinued operations available to common stockholders (in dollars per share)	$ 0.26	$ 0.21	$ 0.69		$ 0.97
(Loss) income from discontinued operations (in dollars per share)	$ (0.03)	$ 0	$ 0.13		$ 0.02
Net income available to common stockholders (in dollars per share)	$ 0.23	$ 0.21	$ 0.82		$ 0.99
Weighted average number of common shares outstanding during the period (in shares)	33,209,289	29,762,420	32,304,686	[1]	29,398,637	[1]
Dividend per common share (in dollar per share)	$ 1.040	$ 1.033	$ 3.120		$ 3.098

[1] Weighted average convertible limited partnership units of 2,228,404 and 2,233,088, which includes vested Series Z incentive units, for the three and nine months ended September 30, 2011, respectively, and weighted convertible limited partnership units of 2,200,907 and 2,325,220 which includes vested Series Z incentive units, for the three and nine months ended September 30, 2010, respectively, were not included in the determination of diluted EPS because they were anti-dilutive. The Company has the ability to redeem DownREIT limited partnership units for cash and does not consider them to be potentially dilutive securities. Stock options of 22,000 and 116,747 for the three months ended September 30, 2011 and 2010, respectively, and 29,500 and 133,432 for the nine months ended September 30, 2011 and 2010, respectively, were not included in the diluted earnings per share calculation because the exercise price of the options were greater than the average market price of the common shares for the three and six months ended and, therefore, were anti-dilutive.All shares of cumulative convertible preferred stock Series G have been excluded from diluted earnings per share for the three and nine months ended September 30, 2011 and 2010, as the effect was dilutive.