Summary of Significant Accounting Policies - Residential Whole Loans (Details)		9 Months Ended
Apr. 04, 2022	Sep. 30, 2023
Accounting Policies [Abstract]
Number of days considered to classify loans delinquent		60 days
LTV ratio (as a percent)		80.00%
Stock split ratio, common stock	0.25

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-4

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