Three Months Ended
June 30,

Six Months Ended
June 30,

2012

2011

2012

2011

Basic earnings per share:

Income from continuing operations attributable to common shareholders

$

1.12

$

0.79

$

1.06

$

0.64

Income (loss) from discontinued operations

—

0.01

(0.02

)

0.02

Earnings per share — basic

$

1.12

$

0.80

$

1.04

$

0.66

Diluted earnings per share:

Income from continuing operations attributable to common shareholders

$

1.12

$

0.78

$

1.05

$

0.64

Income (loss) from discontinued operations

(0.01

)

0.01

(0.01

)

0.01

Earnings per share — diluted

$

1.11

$

0.79

$

1.04

$

0.65