DEBT - Narrative (Details)		12 Months Ended
	Jul. 26, 2024 USD ($) extensionOption	Dec. 31, 2024 USD ($) apartmentCommunity apartmentProperty loan	Dec. 31, 2023 USD ($) apartmentProperty	Oct. 28, 2024 USD ($)	Sep. 30, 2024 USD ($)	Aug. 30, 2024 USD ($)	Sep. 30, 2021 USD ($)
Line of Credit Facility [Line Items]
Number of real estate properties, unencumbered by mortgages | apartmentProperty		45
Revolving lines of credit		$ 47,359,000	$ 30,000,000
Carrying principal value		$ 966,623,000	$ 921,124,000
Number of real estate communities, serving as collateral for mortgage loans | apartmentProperty			14
Interest Rate		3.58%	3.54%
Mortgages
Line of Credit Facility [Line Items]
Carrying principal value		$ 420,400,000	$ 392,300,000
Number of real estate communities, serving as collateral for mortgage loans | apartmentCommunity		15
Number of loans in default | loan		0
Minimum | Mortgages
Line of Credit Facility [Line Items]
Interest rate		3.45%
Maximum | Mortgages
Line of Credit Facility [Line Items]
Interest rate		5.04%
Private Shelf Agreement | Unsecured debt
Line of Credit Facility [Line Items]
Carrying principal value		$ 175,000,000.0
Maximum borrowing capacity				$ 300,000,000
Original principal balance							$ 125,000,000.0
Note Purchase Agreement | Unsecured debt
Line of Credit Facility [Line Items]
Original principal balance		125,000,000.0
Mortgages payable - Fannie Mae credit facility | Mortgages
Line of Credit Facility [Line Items]
Carrying principal value		198,850,000	$ 198,850,000
Original principal balance		$ 198,900,000
Number of real estate communities, serving as collateral for mortgage loans | apartmentProperty		11
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		7 years
Mortgages payable - Fannie Mae credit facility | Mortgages | Interest Only Payment Date Two
Line of Credit Facility [Line Items]
Term		10 years
Mortgages payable - Fannie Mae credit facility | Mortgages | Interest Only Payment Date Three
Line of Credit Facility [Line Items]
Term		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		206,000,000.0	$ 220,000,000.0
Revolving lines of credit		$ 44,000,000.0	$ 30,000,000.0
Operating line of credit, interest rate		5.81%	7.82%
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]
Interest rate spread (as a percent)	0.20%
Line of Credit | BMO Line of Credit | Minimum | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Interest rate spread (as a percent)	1.20%
Line of Credit | BMO Line of Credit | Maximum | Base Rate
Line of Credit Facility [Line Items]
Interest rate spread (as a percent)	0.80%
Line of Credit | BMO Line of Credit | Maximum | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Interest rate spread (as a percent)	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		$ 3,400,000
Operating Line of Credit | Wells Fargo Bank NA
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 6,000,000.0
Revolving lines of credit			$ 0