Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended
	Mar. 31, 2020 USD ($) Entity $ / shares shares	Mar. 31, 2019 $ / shares	Dec. 31, 2019 USD ($) Entity
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of consolidated variable interest entities | Entity	6		6
Mezzanine investment	$ 286,472,000		$ 280,258,000
Distributions per annum (in dollars per share) | $ / shares	$ 0.41	$ 2.02
Write off of straight line rent receivables	$ 2,900,000
Deferred leasing costs	2,200,000
Estimate of credit loss	0
ASC 326 [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cumulative effect adjustment for estimated credit loss	$ (300,000)
AIMCO PROPERTIES, L.P [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Units issued (in shares) | shares	3,618,802
Units outstanding (in shares) | shares	3,618,802
Redemption values	$ 96,400,000
AIMCO PROPERTIES, L.P [Member] | Minimum [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Distributions per annum	1.92%
Distributions per annum (in dollars per share) | $ / shares	$ 0.48
AIMCO PROPERTIES, L.P [Member] | Maximum [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Distributions per annum	8.75%
Distributions per annum (in dollars per share) | $ / shares	$ 8.00
Parkmerced Investment [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Investment owned amount	$ 275,000,000
Equity method investment, interest rate percentage	10.00%
Equity method investment, term	5 years
Equity method investment, right to extend term	5 years
Mezzanine investment	$ 286,500