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Derivatives - Gain (loss) on Derivative Instruments , Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Derivative [Line Items]
Gain (loss) on derivative instruments, net	$ 128,845	$ (58,093)	$ 233,572	$ (176,181)
Restricted Stock [Member] \| Share-Based Payment Arrangement, Employee
Derivative [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period			3 years
Short position \| U.S. Treasury futures
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	16,568	6,320	$ 51,876	(38,027)
Short position \| Interest rate swaps
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	135,781	(72,203)	222,070	(188,930)
Long position \| Interest Rate Swaption
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	(4,275)	182	(4,610)	993
Long position \| Exchange Traded Options
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	0	0	(2,656)	0
Long position \| TBA securities
Derivative [Line Items]
Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net	$ (19,229)	$ 7,608	$ (33,108)	$ 49,783