Mortgage Servicing Assets - Schedule of Range and Weighted-Average of Significant Unobservable Inputs (Details) - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Agency commercial mortgage-backed securities \| Minimum
Servicing Assets at Fair Value [Line Items]
Expected defaults	1.00%	1.00%
Residual cash flows discount rate	6.96%	7.00%
Escrow earn rate	3.94%	4.62%
Prepayment rate	8.00%	8.00%
Agency commercial mortgage-backed securities \| Maximum
Servicing Assets at Fair Value [Line Items]
Expected defaults	2.00%	2.00%
Residual cash flows discount rate	10.84%	10.61%
Escrow earn rate	4.09%	4.70%
Prepayment rate	45.00%	45.00%
Agency commercial mortgage-backed securities \| Weighted-Average
Servicing Assets at Fair Value [Line Items]
Expected defaults	1.01%	1.01%
Residual cash flows discount rate	10.58%	10.31%
Escrow earn rate	4.08%	4.69%
Prepayment rate	10.05%	10.29%
Agency residential mortgage-backed securities \| Minimum
Servicing Assets at Fair Value [Line Items]
Residual cash flows discount rate	6.50%	6.50%
Prepayment rate	6.01%	5.42%
Servicing cost	$ 70.00	$ 70.00
Agency residential mortgage-backed securities \| Maximum
Servicing Assets at Fair Value [Line Items]
Residual cash flows discount rate	8.75%	8.75%
Prepayment rate	33.07%	46.30%
Servicing cost	$ 4,332	$ 4,332
Agency residential mortgage-backed securities \| Weighted-Average
Servicing Assets at Fair Value [Line Items]
Residual cash flows discount rate	6.62%	6.61%
Prepayment rate	8.33%	7.69%
Servicing cost	$ 76.47	$ 75.99

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

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- Definition

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

+ References

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

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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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