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Noncontrolling Interests
9 Months Ended
Sep. 30, 2012
Noncontrolling Interests [Abstract]  
Noncontrolling Interests
15. Noncontrolling Interests
The following table summarizes the effect of changes in our ownership interest in subsidiaries on the equity attributable to common shareholders for the nine months ended September 30:
 
(in thousands)
2012
 
2011
Net income attributable to common shareholders
$
141,224

 
$
2,529

Transfers from the noncontrolling interests:
 
 
 
Increase (decrease) in equity for conversion of operating partnership units
(448
)
 
592

Decrease in additional-paid-in-capital for purchase of remaining noncontrolling ownership interest in a consolidated joint venture
(13,285
)
 

Change in common equity and net transfers from noncontrolling interests
$
127,491

 
$
3,121