FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
FINANCIAL LIABILITIES
Unsecured senior notes	$ 299,475	$ 299,459
Mortgages payable	929,081
Carrying Amount
FINANCIAL ASSETS
Cash and cash equivalents and restricted cash	12,682	8,630
FINANCIAL LIABILITIES
Revolving lines of credit	40,357	30,000
Unsecured senior notes	300,000	300,000
Carrying Amount | Mortgages | Mortgages payable - Fannie Mae credit facility
FINANCIAL LIABILITIES
Mortgages payable	198,850	198,850
Carrying Amount | Mortgages | Mortgages payable - other
FINANCIAL LIABILITIES
Mortgages payable	389,874	391,140
Carrying Amount | Restricted cash
FINANCIAL ASSETS
Cash and cash equivalents and restricted cash	1,066	639
Fair Value
FINANCIAL ASSETS
Cash and cash equivalents and restricted cash	12,682	8,630
FINANCIAL LIABILITIES
Revolving lines of credit	40,357	30,000
Unsecured senior notes	250,704	252,108
Fair Value | Mortgages | Mortgages payable - Fannie Mae credit facility
FINANCIAL LIABILITIES
Mortgages payable	167,501	168,555
Fair Value | Mortgages | Mortgages payable - other
FINANCIAL LIABILITIES
Mortgages payable	365,190	367,080
Fair Value | Restricted cash
FINANCIAL ASSETS
Cash and cash equivalents and restricted cash	$ 1,066	$ 639