Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Rental income	$ 65,636,000	$ 44,873,000	$ 134,049,000	$ 87,182,000
Interest income from mortgage notes receivable and other income	1,648,000	1,649,000	3,297,000	4,288,000
Total revenues	67,284,000	46,522,000	137,346,000	91,470,000
Expenses:
Rental expenses	21,629,000	16,000,000	45,401,000	30,585,000
General and administrative	6,755,000	3,070,000	14,063,000	6,675,000
Acquisition-related expenses (Note 3)	361,000	2,602,000	1,423,000	5,826,000
Depreciation and amortization	26,701,000	18,296,000	53,451,000	35,302,000
Total expenses	55,446,000	39,968,000	114,338,000	78,388,000
Income before other income (expense)	11,838,000	6,554,000	23,008,000	13,082,000
Interest expense (including amortization of deferred financing costs and debt premium/discount):
Interest expense related to mortgage loans payable, credit facility, and derivative financial instruments	(10,319,000)	(8,815,000)	(20,665,000)	(17,691,000)
Net (loss) gain on change in fair value of derivative financial instruments	(1,078,000)	2,095,000	(574,000)	3,656,000
Interest and dividend income	26,000	34,000	144,000	50,000
Income (loss) from continuing operations	467,000	(132,000)	1,913,000	(903,000)
Discontinued operations:
Income from discontinued operations	695,000	377,000	1,439,000	666,000
Net income (loss)	1,162,000	245,000	3,352,000	(237,000)
Less: Net (income) loss attributable to noncontrolling interest of limited partners	9,000	(1,000)	(31,000)	(65,000)
Net income (loss) attributable to controlling interest	$ 1,171,000	$ 244,000	$ 3,321,000	$ (302,000)
Net income (loss) per share attributable to controlling interest on distributed and undistributed earnings - basic and diluted:
Continuing operations	$ 0.01	$ 0	$ 0.01	$ 0
Discontinued operations	$ 0	$ 0	$ 0	$ 0
Net income (loss) per share attributable to controlling interest	$ 0.01	$ 0	$ 0.01	$ 0
Weighted average number of shares outstanding --
Basic	228,340,776	154,594,418	221,606,526	149,990,622
Diluted	228,800,828	154,815,137	222,066,578	149,990,622