MORTGAGE LOANS RECEIVABLE - Past Due Mortgage Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Value	$ 398,227	$ 0
90+
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	0	0
Carrying Value	0	0
Carrying Value Over (Under) UPB	0	0
Mortgage Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	2,234,399	2,064,028
Carrying Value	2,232,913	2,064,028
Carrying Value Over (Under) UPB	(1,486)	0
Mortgage Loans Receivable | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	2,184,470	2,064,028
Carrying Value	2,183,047	2,064,028
Carrying Value Over (Under) UPB	(1,423)	0
Mortgage Loans Receivable | 90+
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	49,929	0
Carrying Value	49,866	0
Carrying Value Over (Under) UPB	$ (63)	$ 0