Derivative Instruments - Schedule of Initial Margin (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Margin deposit assets, initial amount	$ 233,267	$ 150,680
Restricted Cash
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Margin deposit assets, initial amount	74,902	82,222
Agency RMBS
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Margin deposit assets, initial amount	$ 158,365	$ 68,458

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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