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



	Year Ended December 31,
(in thousands, except per share amounts)	2014			2013			2012
Earnings per common share calculation – basic
Income from continuing operations attributable to common shareholders	$	292,089		$	151,594		$	154,116
Amount allocated to participating securities	(2,687		)	(3,177		)	(2,784		)
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	289,402		$	148,417		$	151,332
Discontinued operations, including gain on sale, attributable to common shareholders	—			184,770			129,274
Net income attributable to common shareholders – basic	$	289,402		$	333,187		$	280,606

Earnings per common share from continuing operations	$	3.29		$	1.70		$	1.81
Earnings per common share from discontinued operations	—			2.12			1.54
Total earnings per common share – basic	$	3.29		$	3.82		$	3.35

Weighted average number of common shares outstanding – basic	88,084			87,204			83,772



	Year Ended December 31,
(in thousands, except per share amounts)	2014		2013		2012
Earnings per common share calculation – diluted
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities	$	289,402	$	148,417	$	151,332
Income allocated to common units from continuing operations	—		1,133		1,984
Income from continuing operations attributable to common shareholders, as adjusted	$	289,402	$	149,550	$	153,316
Discontinued operations, including gain on sale, attributable to common shareholders	—		184,770		129,274
Net income attributable to common shareholders – diluted	$	289,402	$	334,320	$	282,590

Earnings per common share from continuing operations	$	3.27	$	1.69	$	1.79
Earnings per common share from discontinued operations	—		2.09		1.51
Total earnings per common share – diluted	$	3.27	$	3.78	$	3.30

Weighted average number of common shares outstanding – basic	88,084		87,204		83,772
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	384		476		647
Common units	—		814		1,137
Weighted average number of common shares outstanding – diluted	88,468		88,494		85,556