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Fair Value of Financial Instruments - Level 3 Assets (Details) - Recurring basis - Level 3 - Residential whole loans, at fair value - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 7,689,431	$ 7,478,930	$ 7,665,985	$ 7,459,137
Purchases and originations	646,990	641,130	1,247,763	1,146,821
Draws	84,858	103,681	155,220	204,851
Changes in fair value recorded in Net gain/(loss) on residential whole loans measured at fair value through earnings	(13,570)	41,603	(48,053)	94,503
Repayments	(557,475)	(590,099)	(1,063,779)	(1,139,317)
Loan sales and repurchases	(103,342)	(68,497)	(186,531)	(138,849)
Transfer to REO	(30,881)	(29,570)	(54,594)	(49,968)
Balance at end of period	$ 7,716,011	$ 7,577,178	$ 7,716,011	$ 7,577,178

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Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Originations And Draws

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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