Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Real estate properties:
Land	$ 163,211	$ 162,843
Buildings, improvements and lease intangibles	2,552,106	2,521,226
Personal property	18,776	18,221
Construction in progress	34,180	86,328
Real estate properties, Total	2,768,273	2,788,618
Less accumulated depreciation	(545,677)	(516,747)
Total real estate properties, net	2,222,596	2,271,871
Cash and cash equivalents	3,103	4,738
Mortgage notes receivable	118,059	97,381
Assets held for sale and discontinued operations, net	12,921	28,650
Other assets, net	115,645	118,382
Total assets	2,472,324	2,521,022
Liabilities:
Notes and bonds payable	1,395,600	1,393,537
Accounts payable and accrued liabilities	57,785	72,217
Liabilities of discontinued operations	174	518
Other liabilities	52,570	49,944
Total liabilities	1,506,129	1,516,216
Commitments and contingencies
Equity:
Preferred stock, $.01 par value; 50,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $.01 par value; 150,000,000 shares authorized; 78,002,812 and 77,843,883 shares issued and outstanding at June 30, 2012 and December 31, 2011, respectively	780	779
Additional paid-in capital	1,896,735	1,894,604
Accumulated other comprehensive loss	(3,332)	(3,332)
Cumulative net income attributable to common stockholders	801,993	795,951
Cumulative dividends	(1,729,981)	(1,683,196)
Total stockholders' equity	966,195	1,004,806
Total liabilities and equity	$ 2,472,324	$ 2,521,022