v3.26.3
Note 2 - Mortgage-backed Securities, at Fair Value - Schedule of RMBS Portfolio (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Mortgage-backed securities, par value $ 11,091,428 $ 10,345,029
Mortgage-backed securities, cost [1] 11,301,869 10,574,339
Pledged assets, Mortgage-backed securities 10,667,068 10,628,658
Fixed Rate Mortgages [Member]    
Mortgage-backed securities, par value 11,091,428 10,345,029
Mortgage-backed securities, cost [1] 11,287,456 10,558,236
Pledged assets, Mortgage-backed securities 10,655,685 10,615,570
Financial Instrument, Other [Member]    
Mortgage-backed securities, par value [2],[3],[4] 0
Mortgage-backed securities, cost [1],[2],[3],[4] 14,413 16,103
Pledged assets, Mortgage-backed securities [2],[3],[4] $ 11,383 $ 13,088
[1] The cost information in the table above represents the aggregate current par value, multiplied by the purchase price of each security in the portfolio.
[2] Other securities are comprised of interest-only and inverse interest-only securities.
[3] The notional balance for the interest-only securities portfolio was $66.1 million and $72.9 million as of September 30, 2026 and December 31, 2025, respectively.
[4] The notional balance for the inverse interest-only securities portfolio was $13.0 million and $17.7 million as of September 30, 2026 and December 31, 2025, respectively.