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Loans and Allowance for Credit Losses - Recorded Investment in Nonperforming Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Loans and Allowance for Credit Losses
Total Nonperforming Loans	$ 642,332	$ 631,199
Non-performing financial instruments
Loans and Allowance for Credit Losses
Nonaccrual Loans with No ACL	2,006	2,325
Nonaccrual Loans with An ACL	1,860	2,057
Total Nonaccrual	3,866	4,382
Total Nonperforming Loans	3,866	4,382
Non-performing financial instruments | Residential portfolio segment | 1-4 Family Residential Mortgage
Loans and Allowance for Credit Losses
Nonaccrual Loans with No ACL	1,141	1,186
Total Nonaccrual	1,141	1,186
Total Nonperforming Loans	1,141	1,186
Non-performing financial instruments | Residential portfolio segment | Home Equity And Second Mortgage
Loans and Allowance for Credit Losses
Nonaccrual Loans with No ACL	282	568
Total Nonaccrual	282	568
Total Nonperforming Loans	282	568
Non-performing financial instruments | Construction | 1-4 Family Residential Construction
Loans and Allowance for Credit Losses
Nonaccrual Loans with An ACL	93	90
Total Nonaccrual	93	90
Total Nonperforming Loans	93	90
Non-performing financial instruments | Construction | Other Construction, Development and Land
Loans and Allowance for Credit Losses
Nonaccrual Loans with No ACL	69	59
Total Nonaccrual	69	59
Total Nonperforming Loans	69	59
Non-performing financial instruments | Commercial portfolio segment | Commercial Real Estate
Loans and Allowance for Credit Losses
Nonaccrual Loans with No ACL	415	413
Total Nonaccrual	415	413
Total Nonperforming Loans	415	413
Non-performing financial instruments | Commercial portfolio segment | Commercial Business
Loans and Allowance for Credit Losses
Nonaccrual Loans with No ACL	99	99
Nonaccrual Loans with An ACL	1,767	1,967
Total Nonaccrual	1,866	2,066
Total Nonperforming Loans	$ 1,866	$ 2,066

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