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Earnings and Dividends per Share and Unit (Details Textual)
$ / shares in Units, $ in Thousands, shares in Millions
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2019
$ / shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
$ / shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
$ / shares
Dec. 31, 2019
$ / shares
Schedule of Earnings Per Share and Dividends Per Share [Line Items]            
Number of shares potentially redeemable for (in shares) | shares   2.6   2.6    
Dividends paid (in dollars per share) | $ / shares   $ 0.41 $ 0.39 $ 0.82 $ 2.41 $ 2.41
Distributions paid (in dollars per share) | $ / shares   $ 0.41 $ 0.39 $ 0.82 $ 2.41 $ 2.41
Special dividend   $ 61,034 $ 58,039 $ 121,859 $ 125,514  
Equity reverse stock split       1.03119    
AIMCO Properties, LP [Member]            
Schedule of Earnings Per Share and Dividends Per Share [Line Items]            
Special distribution   64,377 61,342 $ 128,357 125,514  
AIMCO Properties, LP [Member] | General Partner and Special Limited Partner [Member]            
Schedule of Earnings Per Share and Dividends Per Share [Line Items]            
Special distribution   $ 61,034 $ 58,039 121,859 $ 125,514  
Special Dividend and Special Distribution [Member]            
Schedule of Earnings Per Share and Dividends Per Share [Line Items]            
Dividends paid (in dollars per share) | $ / shares $ 2.02          
Special Dividend Paid [Member]            
Schedule of Earnings Per Share and Dividends Per Share [Line Items]            
Special dividend       $ 67,100    
Common shares issued in special dividend (in shares) | shares       4.5    
Special dividend, cash paid in lieu of fractional shares       $ 400    
Special Distribution Paid [Member] | AIMCO Properties, LP [Member] | General Partner and Special Limited Partner [Member]            
Schedule of Earnings Per Share and Dividends Per Share [Line Items]            
Special distribution       $ 72,700    
Units issued in special dividend (in shares) | shares       4.8    
Special distribution, cash paid in lieu of fractional shares       $ 400