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Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Increase (Decrease) in Temporary Equity [Roll Forward]        
Balance, December 31, 2011     $ 83,384  
Net income (1,609) (1,670) (4,890) (5,012)
Balance, September 30, 2012 80,077   80,077  
Preferred Noncontrolling Interests In Aimco Operating Partnership [Member]
       
Increase (Decrease) in Temporary Equity [Roll Forward]        
Balance, December 31, 2011     83,384  
Preferred distributions     (4,890)  
Redemption of preferred units     (3,307)  
Net income     4,890  
Balance, September 30, 2012 $ 80,077   $ 80,077