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



	Three Months Ended						Six Months Ended
	June 30,						June 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	$	21,763		$	(17,481	)	$	78,297		$	(10,978	)
Amount allocated to participating securities	(210		)	139			(1,099		)	36
Income (loss) from continuing operations attributable to common shareholders, net of amount allocated to participating securities	21,553			(17,342		)	77,198			(10,942		)
Income from discontinued operations, including gain on sale, attributable to common shareholders	—			884			32,224			1,667
Net income (loss) attributable to common shareholders, as adjusted	$	21,553		$	(16,458	)	$	109,422		$	(9,275	)

Income (loss) from continuing operations attributable to common shareholders, as adjusted – per share	$	0.26		$	(0.24	)	$	0.95		$	(0.15	)
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share	—			0.01			0.39			0.02
Net income (loss) attributable to common shareholders, as adjusted – per share	$	0.26		$	(0.23	)	$	1.34		$	(0.13	)

Weighted average number of common shares outstanding – basic	83,223			72,343			81,554			72,126

Earnings per share calculation – diluted
Income (loss) from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	21,553		$	(17,342	)	$	77,198		$	(10,942	)
Income allocated to common units from continuing operations	—			—			1,685			—
Income (loss) from continuing operations attributable to common shareholders, as adjusted	21,553			(17,342		)	78,883			(10,942		)
Income from discontinued operations, including gain on sale, attributable to common shareholders	—			884			32,224			1,667
Net income (loss) attributable to common shareholders, as adjusted	$	21,553		$	(16,458	)	$	111,107		$	(9,275	)

Income (loss) from continuing operations attributable to common shareholders, as adjusted – per share	$	0.26		$	(0.24	)	$	0.94		$	(0.15	)
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share	—			0.01			0.38			0.02
Net income (loss) attributable to common shareholders, as adjusted – per share	$	0.26		$	(0.23	)	$	1.32		$	(0.13	)

Weighted average number of common shares outstanding – basic	83,223			72,343			81,554			72,126
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	623			—			652			—
Common units	—			—			2,255			—
Weighted average number of common shares outstanding – diluted	83,846			72,343			84,461			72,126