Repurchase Agreements - Schedule of Borrowings Under Financing Arrangements and Associated Assets Pledged as Collateral (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Outstanding Repurchase Agreements	$ 4,128,622	$ 3,516,611
Carrying Value of Repurchase Agreements	4,485,716	4,012,225
Fair Value of Collateral Pledged	$ 3,913,268	$ 3,841,738
Weighted Average Months to Maturity	35 days	26 days
Single Family
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Fair Value of Collateral Pledged	$ 132,700	$ 134,600
Residential Loans and Real Estate Owned
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Carrying Value of Repurchase Agreements	289,896	428,399
Fair Value of Collateral Pledged	363,300
Residential Loans
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Fair Value of Collateral Pledged		524,600
Residential Loans
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Maximum Aggregate Uncommitted Principal Amount	2,775,000	2,775,000
Outstanding Repurchase Agreements	357,483	496,410
Net Deferred Finance Costs	(389)	(796)
Fair Value of Collateral Pledged	$ 495,999	$ 659,183
Weighted Average Rate	6.63%	6.70%
Weighted Average Months to Maturity	6 years 7 months 20 days	9 years 7 months 20 days
Residential Loans \| Repurchase agreements
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Carrying Value of Repurchase Agreements	$ 357,094	$ 495,614
Residential Loans \| Repurchase Agreement, Non Mark-to Market
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Outstanding Repurchase Agreements	$ 13,100	$ 15,000
Weighted Average Rate	6.85%	7.09%
Weighted Average Months to Maturity	6 months	8 months

Assets Sold under Agreements to Repurchase, Deferred Finance Costs, Net

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- Definition

The total amount of repossession that is available under the repurchase agreement.

+ References

No definition available.

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- Definition

Carrying amount of assets sold under agreements to repurchase when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under repurchase agreements exceeds 10 percent of total assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(m)(1)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets.

+ References

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- Definition

Amount, including accrued interest, to be repaid to counterparty to repurchase agreement when carrying amount or market value if higher, of security or other asset sold under repurchase agreement exceeds 10 percent of total assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481420/860-30-50-7

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- Definition

Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section S99
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- Definition

Weighted average maturity (weighted by amount of the agreement) of repurchase agreements with the counterparty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147481420/860-30-50-9

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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.

+ References

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