RESIDENTIAL TRANSITION LOANS - Past Due Residential Transition Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Value	$ 393,786	$ 398,227
90+
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	0	0
Carrying Value	0	0
Carrying Value Over (Under) UPB	0	0
Residential Transitional Lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	2,172,713	1,880,804
Carrying Value	2,178,075	1,879,319
Carrying Value Over (Under) UPB	5,362	(1,485)
Residential Transitional Lending | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB	2,117,479	1,838,935
Carrying Value	2,128,802	1,837,513
Carrying Value Over (Under) UPB	11,323	(1,422)
Residential Transitional Lending | 90+
Accounts, Notes, Loans and Financing Receivable [Line Items]
UPB		41,869
Carrying Value	49,273	41,806
Carrying Value Over (Under) UPB	$ (5,961)	$ (63)