Business Segments (Details 1) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total assets	$ 6,544,356	$ 6,079,040
Operating Segments [Member] | Aimco Real Estate [Member]
Segment Reporting Information [Line Items]
Total assets	5,853,287	5,391,816
Corporate Non-Segment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 691,069	$ 687,224