Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues
Rental	$ 109,820	$ 89,512	$ 216,444	$ 178,369
Tenant recoveries	33,230	26,576	66,138	53,140
Other income	926	922	1,703	1,994
Total revenues	143,976	117,010	284,285	233,503
Expenses
Rental operations	40,679	30,335	81,760	61,883
General and administrative	10,766	8,266	20,266	17,745
Interest	16,571	18,778	34,413	36,340
Depreciation and amortization	40,363	30,299	77,070	60,011
Total expenses	108,379	87,678	213,509	175,979
Income from continuing operations before loss on early extinguishment of debt	35,597	29,332	70,776	57,524
Loss on early extinguishment of debt	(1,248)	(41,496)	(3,743)	(41,496)
Income (loss) from continuing operations	34,349	(12,164)	67,033	16,028
(Loss) income from discontinued operations before gain on sales of real estate	(38)	(60)	(97)	509
Gain on sales of real estate				24
(Loss) income from discontinued operations, net	(38)	(60)	(97)	533
Net income (loss)	34,311	(12,224)	66,936	16,561
Net income attributable to noncontrolling interests	938	930	1,867	1,865
Dividends on preferred stock	7,089	7,090	14,178	14,179
Net income attributable to unvested restricted stock awards	298	149	540	311
Net income (loss) attributable to Alexandria Real Estate Equities, Inc.'s common stockholders	$ 25,986	$ (20,393)	$ 50,351	$ 206
Earnings (loss) per share attributable to Alexandria Real Estate Equities, Inc.'s common stockholders - basic
Continuing operations (in dollars per share)	$ 0.44	$ (0.45)	$ 0.89	$ (0.01)
Discontinued operations, net (in dollars per share)				$ 0.01
Earnings (loss) per share - basic (in dollars per share)	$ 0.44	$ (0.45)	$ 0.89
Earnings (loss) per share attributable to Alexandria Real Estate Equities, Inc.'s common stockholders - diluted
Continuing operations (in dollars per share)	$ 0.44	$ (0.45)	$ 0.89	$ (0.01)
Discontinued operations, net (in dollars per share)				$ 0.01
Earnings (loss) per share - diluted (in dollars per share)	$ 0.44	$ (0.45)	$ 0.89