RESIDENTIAL MORTGAGE LOANS - Schedule of Geographic Distribution of the Residential Mortgage Loans (Details) - Residential Mortgage Loans	Jun. 30, 2024	Dec. 31, 2023
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	100.00%	100.00%
California
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	11.20%	8.30%
Florida
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	9.20%	9.30%
Texas
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	8.60%	9.50%
New York
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	5.80%	8.00%
Georgia
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	4.30%	4.90%
New Jersey
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	3.70%	3.90%
Maryland
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	3.40%	3.30%
ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	3.30%	3.50%
North Carolina
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	3.30%	3.20%
Virginia
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	3.10%	3.60%
Other US
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Percentage of Total Outstanding Unpaid Principal Amount	44.10%	42.50%