The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:



	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in thousands, except per share amounts)	2012			2011			2012			2011
Earnings per share calculation – basic
Income (loss) from continuing operations attributable to common shareholders	$	30,360		$	10,751		$	108,091		$	(638	)
Amount allocated to participating securities	(288		)	(154		)	(1,387		)	(118		)
Income (loss) from continuing operations attributable to common shareholders, net of amount allocated to participating securities	30,072			10,597			106,704			(756		)
Income from discontinued operations, including gain on sale, attributable to common shareholders	343			1,089			33,133			3,167
Net income attributable to common shareholders, as adjusted	$	30,415		$	11,686		$	139,837		$	2,411

Income (loss) from continuing operations attributable to common shareholders, as adjusted – per share	$	0.35		$	0.14		$	1.29		$	(0.01	)
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share	0.01			0.02			0.40			0.04
Net income attributable to common shareholders, as adjusted – per share	$	0.36		$	0.16		$	1.69		$	0.03

Weighted average number of common shares outstanding – basic	85,631			73,242			82,923			72,502

Earnings per share calculation – diluted
Income (loss) from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	30,072		$	10,597		$	106,704		$	(756	)
Income allocated to common units from continuing operations	—			8			1,167			—
Income (loss) from continuing operations attributable to common shareholders, as adjusted	30,072			10,605			107,871			(756		)
Income from discontinued operations, including gain on sale, attributable to common shareholders	343			1,089			33,133			3,167
Net income attributable to common shareholders, as adjusted	$	30,415		$	11,694		$	141,004		$	2,411

Income (loss) from continuing operations attributable to common shareholders, as adjusted – per share	$	0.35		$	0.14		$	1.27		$	(0.01	)
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share	—			0.02			0.39			0.04
Net income attributable to common shareholders, as adjusted – per share	$	0.35		$	0.16		$	1.66		$	0.03

Weighted average number of common shares outstanding – basic	85,631			73,242			82,923			72,502
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	662			793			655			—
Common units	—			239			1,116			—
Weighted average number of common shares outstanding – diluted	86,293			74,274			84,694			72,502