CONSOLIDATED BALANCE SHEETS (unaudited) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Real estate, at cost:
Land	$ 1,568,479	$ 1,520,413
Buildings and improvements	2,819,307	2,592,449
Total real estate, at cost	4,387,786	4,112,862
Less accumulated depreciation and amortization	(761,077)	(711,615)
Net real estate held for investment	3,626,709	3,401,247
Real estate held for sale, net	6,354	3,631
Net real estate	3,633,063	3,404,878
Cash and cash equivalents	155,671	17,607
Accounts receivable, net	10,899	11,301
Goodwill	17,206	17,206
Other assets, net	174,214	84,598
Total assets	3,991,053	3,535,590
LIABILITIES AND STOCKHOLDERS' EQUITY
Distributions payable	20,401	19,051
Accounts payable and accrued expenses	51,963	47,019
Other liabilities	18,090	22,555
Line of credit payable	0	0
Mortgage notes payable, net	59,606	0
Notes payable	1,750,000	1,600,000
Total liabilities	1,900,060	1,688,625
Commitments and contingencies
Stockholders' equity:
Preferred stock and paid in capital, par value $1.00 per share, 20,000,000 shares authorized, 13,900,000 shares issued and outstanding in 2011 and 2010	337,790	337,790
Common stock and paid in capital, par value $1.00 per share, 200,000,000 shares authorized, 126,865,242 and 118,058,988 shares issued and outstanding as of June 30, 2011 and December 31, 2010, respectively	2,354,676	2,066,287
Distributions in excess of net income	(601,473)	(557,112)
Total stockholders' equity	2,090,993	1,846,965
Total liabilities and stockholders' equity	$ 3,991,053	$ 3,535,590