XML 71 R41.htm IDEA: XBRL DOCUMENT v2.4.0.6
Property Acquisitions, Discontinued Operations, And Assets Held For Sale (Narrative) (Details) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended
Jul. 31, 2012
Jan. 31, 2012
Dec. 31, 2011
Jun. 30, 2012
acre
Mar. 31, 2012
Dec. 31, 2011
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Property Acquisitions, Discontinued Operations, And Assets Held For Sale [Abstract]                  
Acres of land acquired       4.7          
Purchase price of land acquired       $ 13,400,000          
Number of operating properties acquired 1     1          
Purchase price of operating properties acquired 25,300,000     76,000,000          
Equity Method Investment, Ownership Percentage     20.00%     20.00%      
Number of units in multifamily properties acquired 223     477          
Percentage of voting interests acquired   80.00%              
Number of unconsolidated equity method investments acquired   12              
Number of apartment units in wholly owned property acquired   4,034              
Gain on acquisition of controlling interest in joint ventures   40,200,000   0     0 40,191,000 0
Pro Forma Property Revenues of Acquiree since Acquisition Date, Actual               20,500,000  
Pro Forma Property Expenses of Acquiree since Acquisition Date, Actual               $ 8,300,000  
Number of operating properties sold     2   3 4      
Number of apartment homes in operating properties sold     788   1,033        
Number of assets classified as held for sale       0       0