Earnings per share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Reconciliation of the numerators and denominators of the basic and diluted earnings per share computations

The table below is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the years ended December 31, 2013, 2012, and 2011 (in thousands, except per share amounts):

	Year Ended December 31,
	2013			2012			2011
Income from continuing operations	$	134,525		$	94,848		$	117,270
Gain on sales of land parcels	4,824			1,864			46
Net income attributable to noncontrolling interests	(4,032		)	(3,402		)	(3,975		)
Dividends on preferred stock	(25,885		)	(27,328		)	(28,357		)
Preferred stock redemption charge	—			(5,978		)	—
Net income attributable to unvested restricted stock awards	(1,581		)	(1,190		)	(1,088		)
Income from continuing operations attributable to Alexandria’s common stockholders – basic and diluted	107,851			58,814			83,896
Income from discontinued operations	900			8,816			18,077
Net income attributable to Alexandria’s common stockholders – basic and diluted	$	108,751		$	67,630		$	101,973
Weighted average shares of common stock outstanding – basic and diluted	68,038			62,160			59,078
Earnings per share attributable to Alexandria’s common stockholders – basic and diluted:
Continuing operations	$	1.59		$	0.95		$	1.42
Discontinued operations	0.01			0.14			0.31
Earnings per share – basic and diluted	$	1.60		$	1.09		$	1.73