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Mortgage Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Servicing Asset at Amortized Cost [Line Items]
Mortgage Loans Serviced By For Third Parties	$ 4,100,000	$ 4,100,000
Fair value of MSRs	50,700	$ 54,000
Residential Mortgage
Servicing Asset at Amortized Cost [Line Items]
Fair value of MSRs	50,731		$ 48,971
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance	$ 0

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- Definition

Mortgage loans serviced by the Corporation for unrelated third parties

+ References

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

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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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Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.

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