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Residential Whole Loans - Realized Credit Losses Net of Recoveries (Details) - Residential whole loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	$ (10,052)	$ (7,084)	$ (23,594)	$ (9,077)
Non-QM loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(80)	0	(866)	88
Business purpose loans | Single-family rental loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(7,489)	(669)	(11,833)	(2,123)
Business purpose loans | Single-family transitional loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(946)	(2,393)	(4,469)	(2,012)
Business purpose loans | Multifamily transitional loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(1,353)	(3,802)	(5,602)	(3,910)
Legacy RPL/NPL loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(184)	(220)	(824)	(1,120)
Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	$ 0	$ 0	$ 0	$ 0

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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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