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 income	$ 88,990	$ 38,881	$ 229,710	$ 79,814
Tenant reimbursement income	7,279	2,177	17,010	4,538
Interest income on mortgage notes receivable	1,384	1,361	4,088	2,262
Interest income on marketable securities	13		13
Total revenue	97,666	42,419	250,821	86,614
Expenses:
General and administrative expenses	3,123	1,546	7,213	4,202
Property operating expenses	7,776	2,430	18,515	4,968
Property and asset management expenses	8,052	3,461	21,065	7,384
Acquisition related expenses	24,480	16,203	47,201	34,131
Depreciation	19,318	7,664	48,755	14,945
Amortization	9,631	3,923	24,096	8,514
Total operating expenses	72,380	35,227	166,845	74,144
Operating income	25,286	7,192	83,976	12,470
Other income (expense):
Equity in income (loss) of unconsolidated joint ventures	354	213	1,131	(303)
Interest and other income	74	284	296	1,053
Interest expense	(24,432)	(7,697)	(59,082)	(14,994)
Total other expense	(24,004)	(7,200)	(57,655)	(14,244)
Net income (loss)	1,282	(8)	26,321	(1,774)
Net income allocated to noncontrolling interests	11		310
Net income (loss) attributable to the Company	$ 1,271	$ (8)	$ 26,011	$ (1,774)
Weighted average number of common shares outstanding:
Basic and diluted	320,524,336	196,134,561	291,885,880	155,417,335
Net income (loss) attributable to the Company per common share:
Basic and diluted	$ 0	$ 0.00	$ 0.09	$ (0.01)
Distributions declared per common share:	$ 0.16	$ 0.18	$ 0.49	$ 0.52