Mortgage-Backed Securities - Loan Products Type and Characteristics (Details) - Non-Agency RMBS	Jun. 30, 2026	Dec. 31, 2025
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	11.70%	12.20%
Bankruptcy
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	1.50%	1.40%
Foreclosure
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	2.40%	2.90%
REO
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	0.70%	0.70%
30 Days Delinquent
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	3.60%	3.80%
60 Days Delinquent
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	1.60%	1.50%
90+ Days Delinquent
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of UPB	2.00%	1.90%