Stockholders' equity Stockholders' equity (Tables)

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

Accumulated other comprehensive loss attributable to Alexandria Real Estate Equities, Inc.

Accumulated other comprehensive income attributable to Alexandria Real Estate Equities, Inc. consists of the following (in thousands):

	Net Unrealized Gain (Loss) on:
	Available-for- Sale Equity Securities		Interest Rate Hedge Agreements		Foreign Currency Translation			Total
Balance as of December 31, 2016	$	19,293	$	405	$	(14,343	)	$	5,355
Other comprehensive income before reclassifications	23,414		812		7,592			31,818
Amounts reclassified from other comprehensive income	2,482		1,810		2,421			6,713
	25,896		2,622		10,013			38,531
Amounts attributable to noncontrolling interests	—		—		(22		)	(22		)
Net other comprehensive income	25,896		2,622		9,991			38,509
Balance as of September 30, 2017	$	45,189	$	3,027	$	(4,352	)	$	43,864