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DEBT - Narrative (Details) |  | 6 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 26, 2024 extensionOption | Jun. 30, 2025 USD ($) apartmentCommunity loan | Dec. 31, 2024 USD ($) apartmentCommunity | May 31, 2025 USD ($) | Apr. 30, 2025 USD ($) | Oct. 28, 2024 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2021 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Number of real estate properties, unencumbered by mortgages | apartmentCommunity |  | 47 |  |  |  |  |  |
Revolving lines of credit |  | $ 216,030,000 | $ 47,359,000 |  |  |  |  |
Outstanding debt |  | $ 1,121,292,000 | $ 966,623,000 |  |  |  |  |
Weighted average interest rate |  | 3.90% | 3.58% |  |  |  |  |
Mortgages |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Outstanding debt |  | $ 406,400,000 | $ 420,400,000 |  |  |  |  |
Number of real estate properties, serving as collateral for mortgage loans | apartmentCommunity |  | 14 | 15 |  |  |  |  |
Number of material defaults or instances of noncompliance | loan |  | 0 |  |  |  |  |  |
Private Shelf Agreement | Unsecured Senior Notes |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Outstanding debt |  | $ 175,000,000.0 |  |  |  |  |  |
Debt instrument, maximum borrowing capacity |  |  |  |  |  | $ 300,000,000.0 |  |
Debt instrument, face amount |  |  |  |  |  |  |  | $ 125,000,000.0
Note Purchase Agreement | Unsecured Senior Notes |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  | 125,000,000.0 |  |  |  |  |  |
Fannie Mae Credit Facility Agreement | Mortgages |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Outstanding debt |  | 198,850,000 | $ 198,850,000 |  |  |  |  |
Debt instrument, face amount |  | $ 198,900,000 |  |  |  |  |  |
Number of real estate properties, serving as collateral for mortgage loans | apartmentCommunity |  | 11 |  |  |  |  |  |
Weighted average interest rate |  | 2.78% | 2.78% |  |  |  |  |
Fannie Mae Credit Facility Agreement | Mortgages | Interest Only Payment Date One |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Term of debt |  | 7 years |  |  |  |  |  |
Fannie Mae Credit Facility Agreement | Mortgages | Interest Only Payment Date Two |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Term of debt |  | 10 years |  |  |  |  |  |
Fannie Mae Credit Facility Agreement | Mortgages | Interest Only Payment Date Three |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Term of debt |  | 12 years |  |  |  |  |  |
Line of Credit | BMO Line of Credit |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Accordion option |  |  |  | $ 150,000,000.0 |  |  |  |
Maximum borrowing capacity |  |  |  | $ 400,000,000.0 | $ 250,000,000.0 |  |  |
Remaining borrowing capacity |  | $ 184,200,000 | $ 206,000,000.0 |  |  |  |  |
Revolving lines of credit |  | $ 215,800,000 | $ 44,000,000.0 |  |  |  |  |
Interest rate |  | 5.75% | 5.81% |  |  |  |  |
Number of extensions | extensionOption | 2 |  |  |  |  |  |  |
Debt extension term | 6 months |  |  |  |  |  |  |
Line of Credit | BMO Line of Credit | Minimum | Base Rate |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate | 0.20% |  |  |  |  |  |  |
Line of Credit | BMO Line of Credit | Minimum | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate | 1.20% |  |  |  |  |  |  |
Line of Credit | BMO Line of Credit | Maximum | Base Rate |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate | 0.80% |  |  |  |  |  |  |
Line of Credit | BMO Line of Credit | Maximum | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate | 1.80% |  |  |  |  |  |  |
Operating Line of Credit | US Bank NA |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 10,000,000.0 |
Revolving lines of credit |  | $ 194,000 | $ 3,400,000 |  |  |  |  |

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