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Derivative Instruments, Realized Gain (Loss) Related to Derivatives (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Realized gain on derivatives, net		$ 14,838	$ 9,430	$ 19,472	$ 15,682
Interest Rate Swaps [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Periodic interest income		4,600	8,300	11,100	17,000
Not Designated as Hedging Instrument [Member] | Realized Gain (Loss) on Derivatives [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Realized gain on derivatives, net		10,226	1,147	8,388	(1,280)
Not Designated as Hedging Instrument [Member] | Realized Gain (Loss) on Derivatives [Member] | Interest Rate Swaps [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Realized gain on derivatives, net	[1]	(1,167)	0	(1,167)	4,325
Not Designated as Hedging Instrument [Member] | Realized Gain (Loss) on Derivatives [Member] | TBAs [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Realized gain on derivatives, net		7,321	3,486	7,295	(497)
Not Designated as Hedging Instrument [Member] | Realized Gain (Loss) on Derivatives [Member] | U.S. Treasury Futures [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Realized gain on derivatives, net		4,072	(2,339)	2,227	(5,108)
Not Designated as Hedging Instrument [Member] | Realized Gain (Loss) on Derivatives [Member] | U.S. Treasury Futures Options [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Realized gain on derivatives, net		$ 0	$ 0	$ 33	$ 0
[1] Excludes interest rate swap periodic interest income of $4.6 million and $8.3 million, for the three-month periods ended June 30, 2025 and June 30, 2024, respectively and $11.1 million and $17.0 million, for the six-month periods ended June 30, 2025 and June 30, 2024, respectively.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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-Name Accounting Standards Codification
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Amount of the required periodic payment applied to interest.

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