FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
FINANCIAL LIABILITIES
Unsecured senior notes	$ 299,459	$ 399,007
Mortgages payable	919,990
Amount
FINANCIAL ASSETS
Cash and cash equivalents	8,630	10,458
FINANCIAL LIABILITIES
Revolving lines of credit	30,000	113,500
Term loans	0	100,000
Unsecured senior notes	300,000	300,000
Amount | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	391,140	299,427
Amount | Fannie Mae Credit Facility Agreement | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	198,850	198,850
Amount | Restricted cash
FINANCIAL ASSETS
Cash and cash equivalents	639	1,433
Fair Value
FINANCIAL ASSETS
Cash and cash equivalents	8,630	10,458
FINANCIAL LIABILITIES
Revolving lines of credit	30,000	113,500
Term loans	0	100,000
Unsecured senior notes	252,108	238,446
Fair Value | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	367,080	274,029
Fair Value | Fannie Mae Credit Facility Agreement | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	168,555	161,297
Fair Value | Restricted cash
FINANCIAL ASSETS
Cash and cash equivalents	$ 639	$ 1,433