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



	Three Months Ended March 31,
(in thousands, except per share amounts)	2016			2015
Earnings per common share calculation – basic
Income from continuing operations attributable to common shareholders	$	36,654		$	110,730
Amount allocated to participating securities	(232		)	(1,052		)
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	36,422		$	109,678
Income from discontinued operations attributable to common shareholders	5,076			4,869
Net income attributable to common shareholders, as adjusted – basic	$	41,498		$	114,547

Earnings per common share from continuing operations	$	0.41		$	1.23
Earnings per common share from discontinued operations	0.05			0.06
Total earnings per common share – basic	$	0.46		$	1.29

Weighted average number of common shares outstanding – basic	89,344			88,987

Earnings per common share calculation – diluted
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	36,422		$	109,678
Income allocated to common units from continuing operations	328			766
Income from continuing operations attributable to common shareholders, as adjusted	$	36,750		$	110,444
Income from discontinued operations attributable to common shareholder	5,076			4,869
Net income attributable to common shareholders – diluted	$	41,826		$	115,313

Earnings per common share from continuing operations	$	0.41		$	1.22
Earnings per common share from discontinued operations	0.05			0.05
Total earnings per common share – diluted	$	0.46		$	1.27

Weighted average number of common shares outstanding – basic	89,344			88,987
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	355			391
Common units	810			1,086
Weighted average number of common shares outstanding – diluted	90,509			90,464