DEBT - Narrative (Details)		3 Months Ended	12 Months Ended
	Jul. 26, 2024 USD ($) extensionOption	Mar. 31, 2025 USD ($) apartmentCommunity loan	Dec. 31, 2024 USD ($) apartmentCommunity	Oct. 28, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2021 USD ($)
Line of Credit Facility [Line Items]
Number of real estate properties, unencumbered by mortgages | apartmentCommunity		45
Revolving lines of credit		$ 48,734,000	$ 47,359,000
Outstanding debt		$ 966,092,000	$ 966,623,000
Weighted average interest rate		3.57%	3.58%
Mortgages
Line of Credit Facility [Line Items]
Outstanding debt		$ 418,500,000	$ 420,400,000
Number of real estate properties, serving as collateral for mortgage loans | apartmentCommunity		15	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
Mortgages payable - Fannie Mae credit facility | 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%
Mortgages payable - Fannie Mae credit facility | Mortgages | Interest Only Payment Date One
Line of Credit Facility [Line Items]
Term of debt		7 years
Mortgages payable - Fannie Mae credit facility | Mortgages | Interest Only Payment Date Two
Line of Credit Facility [Line Items]
Term of debt		10 years
Mortgages payable - Fannie Mae credit facility | 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]
Maximum borrowing capacity		$ 250,000,000.0
Remaining borrowing capacity		204,000,000.0	$ 206,000,000.0
Revolving lines of credit		$ 46,000,000.0	$ 44,000,000.0
Interest rate		5.71%	5.81%
Number of extensions | extensionOption	2
Debt extension term	6 months
Accordion option	$ 400,000,000.0
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		$ 2,700,000	$ 3,400,000