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v3.25.3

Investments in RMBS, Unrealized Loss Positions (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) Security | Dec. 31, 2024 USD ($) Security
RMBS, Unrealized Loss Positions [Abstract] |  |  |
Carrying value |  | $ 1,191,478 | $ 1,122,420
RMBS [Member] |  |  |
RMBS, Unrealized Loss Positions [Abstract] |  |  |
Original face value |  | 1,379,028 | 1,302,160
Book value |  | 1,169,572 | 1,139,262
Gross unrealized losses |  | (2,273) | (22,338)
Carrying value | [1] | $ 1,191,478 | $ 1,122,420
Number of securities | Security |  | 103 | 95
Weighted average coupon |  | 4.98% | 4.80%
Weighted average yield | [2] | 5.08% | 4.91%
Weighted average maturity |  | 27 years | 28 years
RMBS [Member] | Unrealized Loss Positions [Member] |  |  |
RMBS, Unrealized Loss Positions [Abstract] |  |  |
Original face value |  | $ 99,846 | $ 253,930
Book value |  | 74,056 | 205,634
Gross unrealized losses |  | (930) | (7,644)
Carrying value | [1] | $ 73,126 | $ 197,990
Number of securities | Security |  | 6 | 18
Weighted average coupon |  | 3.99% | 4.35%
Weighted average yield | [2] | 4.13% | 4.47%
Weighted average maturity |  | 26 years | 27 years
RMBS [Member] | Less than Twelve Months [Member] | Unrealized Loss Positions [Member] |  |  |
RMBS, Unrealized Loss Positions [Abstract] |  |  |
Original face value |  |  | $ 174,646
Book value |  |  | 142,337
Gross unrealized losses |  |  | (2,993)
Carrying value | [1],[3] |  | $ 139,344
Number of securities | Security |  |  | 13
Weighted average coupon |  |  | 4.76%
Weighted average yield | [2] |  | 4.86%
Weighted average maturity |  |  | 27 years
RMBS [Member] | Twelve or More Months [Member] | Unrealized Loss Positions [Member] |  |  |
RMBS, Unrealized Loss Positions [Abstract] |  |  |
Original face value |  | $ 99,846 | $ 79,284
Book value |  | 74,056 | 63,297
Gross unrealized losses |  | (930) | (4,651)
Carrying value | [1],[3] | $ 73,126 | $ 58,646
Number of securities | Security |  | 6 | 5
Weighted average coupon |  | 3.99% | 3.44%
Weighted average yield | [2] | 4.13% | 3.59%
Weighted average maturity |  | 26 years | 27 years
[1] | See Note 9 regarding the estimation of fair value, which approximates carrying value for all securities.
[2] | The weighted average yield is based on the most recent gross monthly interest income, which is then annualized and divided by the book value of settled securities.
[3] | The Company used an implied AAA rating for the Agency RMBS.

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