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Financial Instruments - Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Sep. 30, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Reserves for collateral-dependent loans | $ 23,800 | $ 18,100
Fair value adjustment for foreclosed assets | (2,500) |
Individually evaluated loans (collateral-dependent) |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 209,799 | 226,430
Individually evaluated loans (collateral-dependent) | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 0 | 0
Individually evaluated loans (collateral-dependent) | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 0 | 0
Individually evaluated loans (collateral-dependent) | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 209,799 | $ 226,430
Foreclosed assets and other real estate owned |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 17,882 |
Foreclosed assets and other real estate owned | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 0 |
Foreclosed assets and other real estate owned | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 0 |
Foreclosed assets and other real estate owned | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | $ 17,882 |

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