Earnings Per Share

9 Months Ended

Sep. 30, 2012

Earnings Per Share

Earnings Per Share

12.          Earnings Per Share

The following table presents earnings per weighted average common share outstanding for the three and nine months ended September 30, 2012 and 2011:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012			2011
Basic earnings per share:
Income from continuing operations attributable to common shareholders	$	2.23	$	2.25	$	3.29		$	2.90
Income (loss) from discontinued operations	—		0.09		(0.01		)	0.10
Earnings per share — basic	$	2.23	$	2.34	$	3.28		$	3.00
Diluted earnings per share:
Income from continuing operations attributable to common shareholders	$	2.21	$	2.24	$	3.26		$	2.88
Income (loss) from discontinued operations	—		0.08		(0.01		)	0.10
Earnings per share — diluted	$	2.21	$	2.32	$	3.25		$	2.98

Performance shares (which are contingently issuable) and restricted stock unit awards increased average diluted common shares outstanding by approximately 1,100,000 shares and 733,000 shares for the three months ended September 30, 2012 and 2011, respectively, and by approximately 971,000 shares and 680,000 shares for the nine months ended September 30, 2012 and 2011, respectively.