Per Share Data (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Calculation Of Basic And Diluted Earnings Per Share

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)	2015			2014
Earnings per common share calculation – basic
Net income attributable to common shareholders	$	115,599		$	40,036
Amount allocated to participating securities	(1,052		)	(352		)
Net income attributable to common shareholders – basic	$	114,547		$	39,684
Earnings per common share – basic	$	1.29		$	0.45
Weighted average number of common shares outstanding – basic	88,987			87,651
Earnings per common share calculation – diluted
Net income attributable to common shareholders, net of amount allocated to participating securities	$	114,547		$	39,684
Income allocated to common units from continuing operations	766			310
Net income attributable to common shareholders – diluted	$	115,313		$	39,994
Earnings per common share – diluted	$	1.27		$	0.45
Weighted average number of common shares outstanding – basic	88,987			87,651
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	391			360
Common units	1,086			813
Weighted average number of common shares outstanding – diluted	90,464			88,824