Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Investments in real estate, net	$ 6,776,914	$ 6,424,578
Cash and cash equivalents	57,696	140,971
Restricted cash	27,709	39,947
Tenant receivables	9,918	8,449
Deferred rent	190,425	170,396
Deferred leasing and financing costs, net	192,658	160,048
Investments	140,288	115,048
Other assets	134,156	90,679
Total assets	7,529,764	7,150,116
Liabilities, Noncontrolling Interests, and Equity
Secured notes payable	708,831	716,144
Unsecured senior notes payable	1,048,230	549,805
Unsecured senior line of credit	204,000	566,000
Unsecured senior bank term loans	1,100,000	1,350,000
Accounts payable, accrued expenses, and tenant security deposits	435,342	423,708
Dividends payable	54,420	41,401
Total liabilities	3,550,823	3,647,058
Commitments and contingencies
Redeemable noncontrolling interests	14,444	14,564
Alexandria Real Estate Equities, Inc.’s stockholders’ equity:
7.00% Series D cumulative convertible preferred stock, $0.01 par value per share, 10,000,000 shares authorized; 10,000,000 issued and outstanding as of December 31, 2013 and 2012; $25 liquidation value per share	250,000	250,000
6.45% Series E cumulative redeemable preferred stock, $0.01 par value per share, 5,200,000 shares authorized; 5,200,000 shares issued and outstanding as of December 31, 2013 and 2012; $25 liquidation value per share	130,000	130,000
Common stock, $0.01 par value per share, 100,000,000 shares authorized; 71,172,197 and 63,244,645 issued and outstanding as of December 31, 2013 and 2012, respectively	712	632
Additional paid-in capital	3,572,281	3,086,052
Accumulated other comprehensive loss	(36,204)	(24,833)
Alexandria Real Estate Equities, Inc.’s stockholders’ equity	3,916,789	3,441,851
Noncontrolling interests	47,708	46,643
Total equity	3,964,497	3,488,494
Total liabilities, noncontrolling interests, and equity	$ 7,529,764	$ 7,150,116