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Securities, at Fair Value - Impact of AFS Securities on AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
AOCI from AFS securities: |  |  |  |
Unrealized gain on AFS securities at beginning of period | $ 4,889 | $ 17,652 | $ 9,476 | $ 17,698
Unrealized gain/(loss) on securities available-for-sale | 32 | (202) | (4,329) | 2,410
Reclassification adjustment for securities sales included in net income/(loss) | (594) | (7,328) | (820) | (9,986)
Change in AOCI from AFS securities | (562) | (7,530) | (5,149) | (7,576)
Balance at end of period | $ 4,327 | $ 10,122 | $ 4,327 | $ 10,122

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