Mortgage Servicing Rights - Weighted-Average Key Assumptions to Estimate Fair Value of Mortgage Servicing Rights (Details) - uSDPerLoan	9 Months Ended	12 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Transfers and Servicing [Abstract]
Discount rate	10.27%	9.34%	9.85%
Total prepayment speeds	7.30%	7.43%	7.40%
Cost of servicing each loan	90	87	88

Servicing Assets And Servicing Liabilities At Fair Value, Assumptions Used To Estimate Fair Value, Cost Of Servicing, Per Loan

No definition available.

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- Definition

Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481229/860-50-50-2

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- Definition

Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

+ References

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- References

No definition available.

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