EQUITY AND MEZZANINE EQUITY - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) qtr $ / shares shares	Dec. 31, 2022 USD ($) apartmentCommunity $ / shares shares	Dec. 31, 2021 USD ($)	Mar. 10, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Noncontrolling interests - operating partnership (in shares) | shares	861,000	971,000
Noncontrolling interests , operating partnership, issued (in shares) | shares		209,000
Number of apartment communities acquired | apartmentCommunity		3
Preferred units, shares issued (in shares) | shares	3,881,000	3,881,000
Preferred shares, liquidation preference | $	$ 97,036,000	$ 97,036,000
Common shares outstanding (in shares) | shares	14,963,000	15,020,000
Sale of common shares, net | $		$ 31,439,000	$ 156,038,000
Aggregate gross sales price of common share of beneficial interest allowed to be repurchased | $				$ 50,000,000
Remaining available repurchase amount | $	$ 9,400,000
Preferred shares of beneficial interest, shares outstanding (in shares) | shares	3,881,000	3,881,000
Liquidation preference per share (in dollars per share) | $ / shares	$ 25	$ 25
Preferred units, shares issued (in shares) | shares	166,000	166,000
Preferred units, liquidation preference | $	$ 16,560,000	$ 16,560,000
At-The-Market Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate gross sales price of common shares, authorized amount | $			$ 250,000,000
Aggregate gross sales price of common shares, remaining authorized amount | $	$ 126,600,000
Incentive Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares forfeited (in shares) | shares	15,000	2,000
Performance Shares | Incentive Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards issued (in shares) | shares	19,606	24,613
Sale of common shares, net | $	$ 1,800,000	$ 1,300,000
Series E Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred units, shares issued (in shares) | shares	1,700,000	1,800,000
Preferred units, par value (in dollars per share) | $ / shares	$ 100
Distribution rate	3.875%
Preferred units, conversion ratio	1.2048
Preferred units, conversion exchange rate, minimum threshold (in dollars per share) | $ / shares	$ 83
Preferred stock, threshold trading days	15 days
Preferred stock, threshold consecutive trading days	30 days
Number of consecutive distribution periods | qtr	3
Minimum distribution rate (in dollars per share) | $ / shares	$ 0.804
Preferred shares, liquidation preference | $	$ 172,500,000
Series C Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distribution rate	6.625%
Preferred shares, liquidation preference | $	$ 97,000,000	$ 97,000,000
Preferred shares of beneficial interest, shares outstanding (in shares) | shares	3,900,000	3,900,000
Liquidation preference per share (in dollars per share) | $ / shares	$ 25.00	$ 25.00
Distribution accrual rate (in dollars per share) | $ / shares	$ 1.65625
Series D Preferred Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred units, shares issued (in shares) | shares	165,600	165,600
Preferred units, issuance price (in dollars per share) | $ / shares	$ 100
Temporary equity, distribution rate	3.862%
Conversion ratio	1.37931
Preferred units, liquidation preference | $	$ 16,600,000