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Securities, at Fair Value - Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Interest income	$ 27,708	$ 14,742	$ 81,156	$ 41,363
Agency MBS
Debt Securities, Available-for-sale [Line Items]
Coupon interest	25,596	10,967	69,372	27,379
Effective yield adjustment	44	(28)	105	(80)
Interest income	25,640	10,939	69,477	27,299
Other MBS
Debt Securities, Available-for-sale [Line Items]
Coupon interest	1,420	2,009	4,383	6,170
Effective yield adjustment	648	13	1,146	87
Interest income	2,068	2,022	5,529	6,257
Term notes backed by MSR collateral
Debt Securities, Available-for-sale [Line Items]
Coupon interest	0	1,265	1,789	5,026
Effective yield adjustment	0	516	4,361	2,781
Interest income	$ 0	$ 1,781	6,150	$ 7,807
MSR related assets
Debt Securities, Available-for-sale [Line Items]
Accelerated discount accretion			$ 2,600

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Accretion Income

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- Definition

Represents the coupon interest income derived from securities backed by a pool of mortgages or trust deeds.

+ References

No definition available.

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- Definition

Represents the following effective yield adjustments pertaining to mortgage backed securities. (1) For Agency MBS, this reflects net premium amortization and discount accretion based on actual prepayment activity. (2) For Non-Agency MBS, this is the difference between the net income calculated using the net yield, which is based on management's estimates of future cash flows, less the current coupon yield.

+ References

No definition available.

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Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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