FAIR VALUE MEASUREMENTS - Schedule of Items Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Mortgage Secured and Mezzanine Loans Receivable
Assets:
Loan receivable	$ 140,764	$ 156,368
Recurring | Mortgage secured loans receivable
Assets:
Loan receivable	117,689	117,684
Recurring | Mezzanine Loan Receivable
Assets:
Loan receivable	23,075	38,684
Recurring | Level 1 | Mortgage Secured and Mezzanine Loans Receivable
Assets:
Loan receivable	0	0
Recurring | Level 1 | Mortgage secured loans receivable
Assets:
Loan receivable	0	0
Recurring | Level 1 | Mezzanine Loan Receivable
Assets:
Loan receivable	0	0
Recurring | Level 2 | Mortgage Secured and Mezzanine Loans Receivable
Assets:
Loan receivable	0	0
Recurring | Level 2 | Mortgage secured loans receivable
Assets:
Loan receivable	0	0
Recurring | Level 2 | Mezzanine Loan Receivable
Assets:
Loan receivable	0	0
Recurring | Level 3 | Mortgage Secured and Mezzanine Loans Receivable
Assets:
Loan receivable	140,764	156,368
Recurring | Level 3 | Mortgage secured loans receivable
Assets:
Loan receivable	117,689	117,684
Recurring | Level 3 | Mezzanine Loan Receivable
Assets:
Loan receivable	$ 23,075	$ 38,684