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Fair Value of Financial Instruments - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other investments	$ 3,224,000		$ 3,193,000
Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value option elected aggregate carrying amount, asset	48,000,000	$ 2,000,000
Residential Consumer Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value option elected aggregate carrying amount, asset	1,000,000,000	53,000,000
Total Residential Investor Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value option elected aggregate carrying amount, asset	327,000,000	442,000,000
HEIs
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Acquisitions	300,000	17,000,000
MSRs and Other Asset Class
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Acquisitions	$ 200,000	$ 0

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Fair Value, Option, Assets, Aggregate Carrying Amount During Period

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- Definition

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- Definition

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- Definition

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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