Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets
Investments in real estate, net	$ 6,453,379	$ 6,424,578
Cash and cash equivalents	302,205	140,971
Restricted cash	30,914	39,947
Tenant receivables	7,577	8,449
Deferred rent	177,507	170,396
Deferred leasing and financing costs, net	164,362	160,048
Investments	122,605	115,048
Other assets	120,740	90,679
Total assets	7,379,289	7,150,116
Liabilities, Noncontrolling Interests, and Equity
Secured notes payable	711,029	716,144
Unsecured senior notes payable	1,048,395	549,805
Unsecured senior line of credit	0	566,000
Unsecured senior bank term loans	1,200,000	1,350,000
Accounts payable, accrued expenses, and tenant security deposits	368,249	423,708
Dividends payable	52,141	41,401
Total liabilities	3,379,814	3,647,058
Commitments and contingencies
Redeemable noncontrolling interests	14,505	14,564
Alexandria Real Estate Equities, Inc.’s stockholders’ equity:
Series D Cumulative Convertible Preferred Stock	250,000	250,000
Series E Cumulative Redeemable Preferred Stock	130,000	130,000
Common stock	710	632
Additional paid-in capital	3,596,477	3,086,052
Accumulated other comprehensive loss	(39,565)	(24,833)
Alexandria’s stockholders’ equity	3,937,622	3,441,851
Noncontrolling interests	47,348	46,643
Total equity	3,984,970	3,488,494
Total liabilities, noncontrolling interests, and equity	$ 7,379,289	$ 7,150,116