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Summary of Significant Accounting Policies - Residential Whole Loans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Number of days considered to classify loans delinquent	60 days
LTV ratio (as a percent)	80.00%
Residential Whole Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, fair value	$ 14.8	$ 103.7

X

- Definition

The LTV of which the Company has assessed its residential whole loans at carrying value will have a higher likelihood of default than newly originated mortgage loans

+ References

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- Definition

Represents the number of days considered to classify loans delinquent.

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- References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Publisher FASB
-URI https://asc.fasb.org//310-10/tableOfContent

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