Derivatives - Gain (loss) on Derivative Instruments , Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Gain (loss) on derivative instruments, net	$ 288,377	$ (32,905)	$ 436,007
Put options on U.S. Treasury futures
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	0	1,588	(431)
Interest rate swaps
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments		0	0
Interest Rate Swaption
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	0	0	47,738
Short position | U.S. Treasury futures
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	174,108	(12,430)	724,347
Short position | Interest rate swaps
Derivative [Line Items]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	152,781
Long position | TBA securities
Derivative [Line Items]
Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net	$ (38,512)	$ (22,063)	$ (335,647)