Short-Term Debt - Principal only stripped MBS (Details) $ in Thousands	Mar. 31, 2025 USD ($)
Bank of America, N.A. | Principal-only stripped MBS
Mortgage loans sold under agreement to repurchase
Amount at risk	$ 2,300
JP Morgan Chase Bank, N.A | Principal-only stripped MBS
Mortgage loans sold under agreement to repurchase
Amount at risk	19,294
Wells Fargo Bank, N.A. | Principal-only stripped MBS
Mortgage loans sold under agreement to repurchase
Amount at risk	20,178
Santander US Capital Markets LLC | Principal-only stripped MBS
Mortgage loans sold under agreement to repurchase
Amount at risk	16,711
Loan Repo Facility | Bank of America, N.A.
Mortgage loans sold under agreement to repurchase
Amount at risk	88,190
Loan Repo Facility | Wells Fargo Bank, N.A.
Mortgage loans sold under agreement to repurchase
Amount at risk	$ 16,838