FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
FINANCIAL LIABILITIES
Unsecured senior notes	$ 399,007	$ 299,344
Mortgages payable	1,011,777
Amount
FINANCIAL ASSETS
Cash and cash equivalents	10,458	31,267
FINANCIAL LIABILITIES
Revolving lines of credit	113,500	76,000
Term loans	100,000	0
Unsecured senior notes	300,000	300,000
Amount | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	299,427	284,934
Amount | Fannie Mae Credit Facility Agreement | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	198,850	198,850
Amount | Restricted cash
FINANCIAL ASSETS
Cash and cash equivalents	1,433	7,358
Fair Value
FINANCIAL ASSETS
Cash and cash equivalents	10,458	31,267
FINANCIAL LIABILITIES
Revolving lines of credit	113,500	76,000
Term loans	100,000	0
Unsecured senior notes	238,446	308,302
Fair Value | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	274,029	284,546
Fair Value | Fannie Mae Credit Facility Agreement | Mortgages
FINANCIAL LIABILITIES
Mortgages payable	161,297	198,850
Fair Value | Restricted cash
FINANCIAL ASSETS
Cash and cash equivalents	$ 1,433	$ 7,358