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Summary of Significant Accounting Policies - Additional Information (Detail) | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) investment | Mar. 31, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) property | Sep. 30, 2023 USD ($) investment | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2023 property | Sep. 30, 2023 investment | Sep. 30, 2023
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  | $ 27,933,000 |  |  | $ 31,772,000 |  |  |
Acquisition of above-market in-place leases, amortization period | 6 months |  |  |  | 6 months |  |  |  |  |
Amortization expense for intangible assets | $ 133,000 |  | $ 79,000 |  | $ 532,000 | $ 53,367,000 |  |  |  |
Write-off of fully amortized intangible assets | 0 |  | 0 |  | 1,099,000 | 58,048,000 |  |  |  |
Amortization of intangible assets remainder |  |  |  |  |  |  | 199,000 |  |  |
Merger and integration cots | 0 |  | (275,000) |  | 0 | (3,477,000) |  |  |  |
Impairment charges | 11,268,000 |  | 0 |  | 11,268,000 | 0 |  |  |  |
Depreciation expense | 55,083,000 |  | 49,268,000 |  | 161,670,000 | 146,222,000 |  |  |  |
Fully depreciated fixed assets, wrote-off | 7,563,000 |  | 0 |  | 15,596,000 | 3,092,000 |  |  |  |
Casualty losses (gains), net | 35,000 |  | (191,000) |  | 866,000 | (7,176,000) |  |  |  |
Interest costs capitalized | $ 1,926,000 |  | 618,000 |  | $ 5,094,000 | 1,404,000 |  |  |  |
Number of multifamily properties owned | property |  |  |  |  |  |  |  | 120 |  |
Investments in real estate under development |  |  |  | 105,518,000 |  |  | 83,547,000 |  |  |
Number of real estate investments ( in investments) | investment | 2 |  |  |  | 2 |  |  |  |  |
Number of investment in unconsolidated real estate entities |  |  |  |  |  |  |  | 4 | 4 |
Right-of-use assets |  |  |  | 3,079,000 |  |  | 2,579,000 |  |  |
Lease liability |  |  |  | 3,401,000 |  |  | 2,882,000 |  |  |
Total operating lease expense | $ 219,000 |  | 252,000 |  | $ 631,000 | 1,096,000 |  |  |  |
Income tax expense | 0 |  | 0 |  | 0 | 0 |  |  |  |
Proceeds from retention credit refunds |  |  |  | 6,238,000 |  |  |  |  |  |
Reimbursements costs |  |  |  | 3,006,000 |  |  |  |  |  |
Restructuring costs | 0 | $ 3,213,000 | 0 |  | 3,213,000 | 0 |  |  |  |
Property Operating Expenses |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from retention credit refunds | 593,000 |  |  |  | 2,170,000 |  |  |  |  |
Property Management Expenses |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from retention credit refunds | 189,000 |  |  |  | 579,000 |  |  |  |  |
General and Administrative Expense |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from retention credit refunds | 74,000 |  |  |  | 221,000 |  |  |  |  |
Investments In Unconsolidated Real Estate Entities |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Interest costs capitalized | $ 1,176,000 |  | $ 484,000 |  | $ 3,271,000 | $ 969,000 |  |  |  |
Real Estate Investment |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Investments in real estate under development |  |  |  | $ 0 |  |  | $ 77,520,000 |  |  |
Denver Colorado |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of multifamily properties owned | property |  |  |  |  |  |  |  | 2 |  |
Denver Colorado | Real Estate Investment |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of multifamily properties owned | property |  |  |  | 2 |  |  |  | 2 |  |
TENNESSEE | Views of Music City / The Crockett |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
IRT Ownership Interest |  |  |  |  |  |  |  |  |  | 50.00%
TEXAS | Lakeline Station |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
IRT Ownership Interest |  |  |  |  |  |  |  |  |  | 90.00%
Minimum |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value assumption, cap rates |  |  |  |  |  |  |  |  |  | 6.00%
Maximum |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value assumption, cap rates |  |  |  |  |  |  |  |  |  | 6.50%
Operating lease term | 10 years |  |  |  | 10 years |  |  |  |  |
Building and Building Improvements |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Depreciable Lives (In years) | 40 years |  |  |  | 40 years |  |  |  |  |
Equipment and Fixtures | Minimum |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Depreciable Lives (In years) | 5 years |  |  |  | 5 years |  |  |  |  |
Equipment and Fixtures | Maximum |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Depreciable Lives (In years) | 10 years |  |  |  | 10 years |  |  |  |  |
Leases Acquired In Place |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition of above-market in-place leases | $ 398,000 |  |  |  | $ 398,000 |  |  |  |  |

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