Principal-Only Stripped Mortgage-Backed Securities - summary of the Company investment in principal-only stripped MBS (Details) - USD ($) $ in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
|
| Mortgage-backed securities | ||||
| Fair Value | $ 659,235 | $ 722,528 | ||
| Principal-Only-Strip MBS | ||||
| Mortgage-backed securities | ||||
| Principal balance | 810,281 | 868,350 | ||
| Unearned discount | (156,567) | (151,382) | ||
| Cumulative valuation change | 5,521 | 5,560 | ||
| Fair Value | $ 659,235 | $ 722,528 | $ 817,596 | $ 825,865 |
| Contractual maturities term | 10 years |