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Residential Whole Loans - Realized Credit Losses Net of Recoveries (Details) - Residential whole loan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	$ (1,349)	$ 773	$ (1,991)	$ 684
Business purpose loans | Single-family transitional loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(271)	971	381	1,099
Business purpose loans | Multifamily transitional loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(80)	0	(107)	0
Business purpose loans | Single-family rental loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(567)	117	(1,454)	459
Non-QM loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	87	869	88	861
Legacy RPL/NPL loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized credit losses, net of recoveries	(518)	(1,184)	(899)	(1,735)
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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