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Investments in Real Estate - Schedule of Disposition of Properties (Detail) $ in Thousands |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
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Jul. 17, 2024 USD ($) housingUnit | Apr. 30, 2024 USD ($) housingUnit | Mar. 28, 2024 USD ($) housingUnit | Mar. 25, 2024 USD ($) housingUnit | Mar. 12, 2024 USD ($) housingUnit | Feb. 13, 2024 USD ($) housingUnit | Dec. 28, 2023 USD ($) | Dec. 21, 2023 USD ($) | Dec. 20, 2023 USD ($) | Feb. 28, 2023 USD ($) | Dec. 06, 2022 USD ($) | Oct. 26, 2022 USD ($) | Feb. 02, 2022 USD ($) | Jan. 18, 2022 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) housingUnit | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100 |  |
Sale Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 395,425 | $ 237,950 | $ 257,050
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,066 | (33,591) | 111,756
Impairment of real estate assets held for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,107 | $ 32,956 | $ 20,995 | 32,956 | 0
Defeasance and debt prepayment gains |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,953 |  |  |
Gain (loss) related to property includes defeasance costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,900 | $ 409
Villas of Kingwood |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  |  |  |  |  | 330 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  | $ 53,700 |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  | $ 62 |  |  |  |  |  |  |  |  |  |  |  |  |
Belmar Villas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  |  |  |  |  | 318 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  | $ 74,300 |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  | $ 46 |  |  |  |  |  |  |  |  |  |  |  |  |
Hearthstone at City Center |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  |  |  |  | 360 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  | $ 74,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  | $ 88 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Villas at Huffmeister |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  |  |  | 294 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  | $ 44,250 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  | $ (415) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Westmont Commons |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  |  | 252 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  | $ 49,875 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  | $ 25,856 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve at Creekside |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit |  | 192 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  | $ 28,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  | $ (152) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tapestry Park |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units (unaudited) | housingUnit | 354 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price | $ 70,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) | $ (14,419) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Eagle Lake Landing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  | $ 37,300 |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  | $ 1,179 |  |  |  |  |  |  |  |  |
The Meadows at River Run |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  | $ 72,700 |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  | $ (14,612) |  |  |  |  |  |  |  |  |  |
Fielders Creek |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  | $ 44,100 |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  | $ (11,019) |  |  |  |  |  |  |  |  |  |  |
Cottage Trails at Culpepper Landing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  | $ 40,750 |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  | (10,168) |  |  |  |  |  |  |  |  |  |  |  |
Oak Crossing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  | 43,100 |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  | $ 1,029 |  |  |  |  |  |  |  |  |  |  |  |
Riverchase |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31,000 |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,901 |  |  |  |  |
Heritage Park |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  |  |  |  | $ 48,500 |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  |  |  | 31,366 |  |  |  |  |  |
Raindance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  |  |  |  | 47,500 |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  |  |  | 33,748 |  |  |  |  |  |
Haverford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  |  |  |  | 31,050 |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,697 |  |  |  |  |  |
Meadows Apartments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  |  |  | $ 57,000 |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  |  | $ 20,573 |  |  |  |  |  |  |
Sycamore Terrace |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Price |  |  |  |  |  |  |  |  |  |  | $ 42,000 |  |  |  |  |  |  |  |
Gain on sale (loss on impairment) |  |  |  |  |  |  |  |  |  |  | $ (3,529) |  |  |  |  |  |  |  |

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