Per Share Data (Tables)

6 Months Ended

Jun. 30, 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 June 30,						Six Months Ended June 30,
(in thousands, except per share amounts)	2015			2014			2015			2014
Earnings per common share calculation – basic
Net income attributable to common shareholders	$	36,079		$	35,272		$	151,678		$	75,308
Amount allocated to participating securities	(251		)	(300		)	(1,302		)	(653		)
Net income attributable to common shareholders – basic	$	35,828		$	34,972		$	150,376		$	74,655
Earnings per common share – basic	$	0.40		$	0.40		$	1.69		$	0.85
Weighted average number of common shares outstanding – basic	89,153			87,845			89,071			87,748
Earnings per common share calculation – diluted
Net income attributable to common shareholders – basic	$	35,828		$	34,972		$	150,376		$	74,655
Income allocated to common units	274			314			1,615			623
Net income attributable to common shareholders – diluted	$	36,102		$	35,286		$	151,991		$	75,278
Earnings per common share – diluted	$	0.40		$	0.40		$	1.68		$	0.85
Weighted average number of common shares outstanding – basic	89,153			87,845			89,071			87,748
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted	288			314			339			338
Common units	811			813			1,086			813
Weighted average number of common shares outstanding – diluted	90,252			88,972			90,496			88,899