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Residential Whole Loans - Realized Credit Losses Net of Recoveries (Details) - Residential whole loans - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	$ (3,731)	$ (642)
Business purpose loans | Single-family transitional loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(2,173)	653
Business purpose loans | Multifamily transitional loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(169)	(28)
Business purpose loans | Single-family rental loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(1,196)	(887)
Non-QM loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(137)	1
Legacy RPL/NPL loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(56)	(381)
Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	$ 0	$ 0

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Financing Receivable, Realized Credit Losses, Net Of Recoveries

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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