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Investments in Real Estate - Additional Information (Detail) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Oct. 26, 2023 property market | Feb. 28, 2023 USD ($) | Sep. 30, 2023 USD ($) unit | Sep. 30, 2022 USD ($) | Dec. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) unit | Sep. 30, 2022 USD ($) | Sep. 30, 2023 property | Sep. 30, 2023 jointVenture
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |
Number of multifamily properties owned | property |  |  |  |  |  |  |  | 120 |
Number of joint ventures |  |  |  |  |  |  |  | 1 | 4
Number of units located with multifamily properties | unit |  |  | 35,427 |  |  | 35,427 |  |  |
Impairment charges |  |  | $ 11,268 | $ 0 |  | $ 11,268 | $ 0 |  |
Disposition of real estate properties, net |  |  |  |  |  | 35,557 | 155,639 |  |
(Loss on impairment) gain on sale of real estate assets, net |  |  | $ (11,268) | $ 0 |  | $ (10,284) | $ 94,712 |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |
Number of properties targeted for sale | property | 10 |  |  |  |  |  |  |  |
Number of markets | market | 7 |  |  |  |  |  |  |  |
CHICAGO MERCANTILE EXCHANGE |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |
Number of properties | property |  |  |  |  |  |  |  | 1 |
Eagle Lake Landing Apartments |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |
Disposition of real estate properties, net |  | $ 37,300 |  |  |  |  |  |  |
(Loss on impairment) gain on sale of real estate assets, net |  | $ 985 |  |  |  |  |  |  |
Mortgages | Forecast |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |
Mortgage loan related to property disposition |  |  |  |  | $ 40,593 |  |  |  |
Held-for-Sale |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |
Number of multifamily properties owned | property |  |  |  |  |  |  |  | 1 |
Number of units located with multifamily properties | unit |  |  | 374 |  |  | 374 |  |  |

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