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Derivative Instruments and Hedging Activities - Schedule of Initial Margin (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Margin deposit assets, initial amount | $ 66,640 | $ 53,458
Restricted Cash |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Margin deposit assets, initial amount | 31,620 | 53,458
Agency RMBS |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Margin deposit assets, initial amount | $ 35,020 | $ 0

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- Details
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