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Noncontrolling Interests (Tables)
6 Months Ended
Jun. 30, 2013
Noncontrolling Interests [Abstract]  
Effect Of Changes In Ownership Interest In Subsidiaries
The following table summarizes the effect of changes in our ownership interest in subsidiaries on the equity attributable to common shareholders for the six months ended June 30:
 
(in thousands)
2013
 
2012
Net income attributable to common shareholders
$
135,648

 
$
110,521

Transfers from the non-controlling interests:
 
 
 
Increase (decrease) in equity for conversion of operating partnership units
71

 
(448
)
Change in common equity and net transfers from non-controlling interests
$
135,719

 
$
110,073