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Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 | Nov. 30, 2019 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Weighted average ownership interest |  |  |  |  | 5.10% | 5.00% |
Percentage of noncontrolling position sold | 20.00% |  |  |  |  |  |
Proceeds from sale of noncontrolling position | $ 33,500 |  |  |  |  |  |
Percentage of noncontrolling position remaining | 80.00% |  |  |  |  |  |
Additional proceeds from sale of noncontrolling position | $ 134,000 |  |  |  |  |  |
Minimum interest accruing percentage | 19.00% |  |  |  |  |  |
Interest prepayment received | $ 4,000 |  |  |  |  |  |
Mezzanine investment |  |  | $ 158,173 |  | $ 158,173 |  | $ 158,558
Consolidated income (loss) subject to tax |  |  | (5,000) | $ (75,600) | (12,400) | $ 91,000 |
Preferred equity, investment amount |  |  | 102,000 |  | 102,000 |  |
Income tax benefit (expense) |  |  | 6,210 | 17,563 | 10,823 | (24,338) |
Aimco OP L.P. [Member] |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Payment made to mezzaine investment | $ 134,000 |  |  |  |  |  |
Minimum annualized returns percentage | 19.00% |  |  |  |  |  |
Percentage of residual payments | 80.00% |  |  |  |  |  |
Percentage of annualized return on subordinate investment | 10.00% |  |  |  |  |  |
Mezzanine investment |  |  | 158,173 |  | 158,173 |  | $ 158,558
Income tax benefit (expense) |  |  | 6,210 | $ 17,563 | $ 10,823 | $ (24,338) |
Parkmerced Investment [Member] |  |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Equity method investment aggregate cost |  | $ 275,000 |  |  |  |  |
Equity method investment term |  | 5 years |  |  |  |  |
Equity method investment interest rate |  | 10.00% |  |  |  |  |
Option to acquire equity interest in partnership, percentage |  |  |  |  | 30.00% |  |
Mezzanine investment |  |  | $ 31,500 |  | $ 31,500 |  |

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