Business Segments (Details 1) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total assets	$ 6,255,290	$ 6,079,040
Operating Segments [Member] | Aimco Real Estate [Member]
Segment Reporting Information [Line Items]
Total assets	5,652,016	5,495,069
Corporate Non-Segment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 603,274	$ 583,971