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Securities, at Fair Value - Narrative (Details) - USD ($)		3 Months Ended			6 Months Ended
		Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Securities, at fair value	[1]	$ 4,147,194,000			$ 4,147,194,000		$ 3,360,280,000
Proceeds from sales of securities					1,561,000	$ 2,617,000
CRT Securities
Debt Securities, Available-for-sale [Line Items]
CRT securities		34,500,000			34,500,000		34,900,000
Securities, at fair value		21,400,000			21,400,000		21,700,000
Proceeds from sales of securities				$ 2,600,000
Realized gain on securities sold				$ 200,000
Gross unrealized losses		0			0		0
Non-agency MBS
Debt Securities, Available-for-sale [Line Items]
Securities, at fair value		21,500,000			21,500,000		22,100,000
Gross unrealized losses		400,000			400,000		200,000
Residential Mortgage Securities
Debt Securities, Available-for-sale [Line Items]
Securities, at fair value		4,147,194,000			4,147,194,000		3,360,280,000
Proceeds from sales of securities		0	$ 0		0
Gross unrealized losses		19,221,000			19,221,000		$ 256,000
AFS securities
Debt Securities, Available-for-sale [Line Items]
Gross unrealized losses		0			0
Allowance for loan loss		$ 0	$ 0		$ 0	$ 0
[1] See Note 6 for information regarding the Company’s pledged assets.

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