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Home Equity Investments (HEI) - Schedule of Activity of Home Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Fair value of HEI purchased and originated | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	$ 2,926	$ 460	$ 8,986	$ 1,066
Fair value of HEI purchased and originated | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	0	0	0	0
Fair value of HEI transferred/Net market valuation (losses) gains recorded | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	148,963	0	148,963	0
Fair value of HEI transferred/Net market valuation (losses) gains recorded | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	(148,963)	0	(148,963)	0
Fair value of HEI sold to third party | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	262,447	0	262,447	0
Fair value of HEI sold to third party | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	0	0	0	0
Net market valuation (losses) gains recorded | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	198	5,812	(6,972)	23,618
Net market valuation (losses) gains recorded | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	$ 2,960	$ 19,408	$ 23,493	$ 51,861

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

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