Mortgage Servicing Assets - Schedule of Range and Weighted-Average of Significant Unobservable Inputs (Details) - Discounted cash flow - USD ($)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Commercial Mortgage Backed Securities \| Minimum
Servicing Assets at Fair Value [Line Items]
Expected defaults	1.00%	0.96%
Residual cash flows discount rate	7.41%	8.57%
Escrow earn rate	5.00%	4.94%
Loan assumption rate	0.00%	0.00%
Commercial Mortgage Backed Securities \| Maximum
Servicing Assets at Fair Value [Line Items]
Expected defaults	2.00%	2.00%
Residual cash flows discount rate	10.65%	10.03%
Escrow earn rate	5.09%	4.95%
Loan assumption rate	2.16%	1.40%
Commercial Mortgage Backed Securities \| Weighted Average
Servicing Assets at Fair Value [Line Items]
Expected defaults	1.01%	1.06%
Residual cash flows discount rate	10.28%	9.49%
Escrow earn rate	5.00%	4.94%
Loan assumption rate	1.97%	1.14%
Agency residential mortgage-backed securities \| Minimum
Servicing Assets at Fair Value [Line Items]
Prepayment speed	6.29%	6.41%
Residual cash flows discount rate	6.50%	7.50%
Servicing cost	$ 70.00	$ 62.00
Agency residential mortgage-backed securities \| Maximum
Servicing Assets at Fair Value [Line Items]
Prepayment speed	43.74%	40.74%
Residual cash flows discount rate	8.75%	8.50%
Servicing cost	$ 3,582	$ 8,075
Agency residential mortgage-backed securities \| Weighted Average
Servicing Assets at Fair Value [Line Items]
Prepayment speed	7.68%	7.30%
Residual cash flows discount rate	6.59%	7.54%
Servicing cost	$ 74.91	$ 67.36

Interest rate used to account for mortgage loan at fair value upon assumption.

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- Definition

Servicing Assets And Servicing Liabilities At Fair Value, Assumptions Used To Estimate Fair Value, Escrow Earn Rate

+ References

No definition available.

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- Definition

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

+ References

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

Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower.

+ References

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- Definition

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

+ 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
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