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Noncontrolling Interests
3 Months Ended
Mar. 31, 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 three months ended March 31:
 
(in thousands)
2012
 
2011
Net income attributable to common shareholders
$
88,758

 
$
7,286

Transfers from the noncontrolling interests:
 
 
 
Increase (decrease) in equity for conversion of operating partnership units
(448
)
 
4

Change in common equity and net transfers from noncontrolling interests
$
88,310

 
$
7,290