RESIDENTIAL MORTGAGE LOANS - Schedule of Geographic Distribution of Residential Mortgage Loans (Details) - Mortgage Loans - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 385,256	$ 415,555
% UPB	100.00%	100.00%
California
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 112,186	$ 117,380
% UPB	29.10%	28.20%
Florida
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 44,487	$ 51,038
% UPB	11.50%	12.30%
New York
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 32,561	$ 38,119
% UPB	8.50%	9.20%
New Jersey
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 23,454	$ 25,109
% UPB	6.10%	6.00%
Maryland
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 20,882	$ 22,476
% UPB	5.40%	5.40%
Virginia
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 14,269	$ 15,520
% UPB	3.70%	3.70%
Illinois
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 14,180	$ 15,344
% UPB	3.70%	3.70%
Georgia
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 13,358	$ 14,098
% UPB	3.50%	3.40%
Texas
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 10,984	$ 11,986
% UPB	2.90%	2.90%
North Carolina
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 10,357	$ 10,745
% UPB	2.70%	2.60%
Other
Mortgage Loans on Real Estate
Unpaid Principal Balance (“UPB”)	$ 88,538	$ 93,740
% UPB	22.90%	22.60%