Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Dec. 31, 2017
Cash Flow Hedging [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional amount of interest rate swaps	$ 21,800	$ 22,000
Average remaining maturity of interest rate swaps	5 years 8 months
Period for reclassification into earnings	12 months
Amount of unrealized gains (losses) estimated to be reclassified from accumulated other comprehensive loss to earnings during the next 12 months	$ 400
Weighted average fixed rate of interest rate swaps	3.26%
Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Face amount of investment in available-for-sale debt securities	$ 100,900
Excepted remaining term of available for sale securities	3 years 2 months
Amortized cost of the investment in available-for-sale debt securities	$ 79,100	77,700
Available-for-sale Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities available-for-sale, fair value disclosure	83,600	82,800
Aimco Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total indebtedness associated with Real Estate portfolio	4,029,343	3,861,770
Non-recourse property debt, net	3,700,979	3,545,109
Asset Management [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-recourse property debt, net	$ 225,502	$ 227,141

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Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
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Average fixed interest rate related to the group of interest rate derivatives.

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No definition available.

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Nominal or face amount on the investment owned.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 210
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Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as available-for-sale.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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