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Common Stock (Details) - USD ($) $ in Thousands | 12 Months Ended | 288 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2001
Common stock |  |  |  |  |  |  |
Number of shares available to directors and employees for stock purchase or savings and investment plans (in shares) |  |  |  |  | 250,000 | 700,000 |
Number of shares issued under employee savings and investment plan (in shares) | 130,200 |  |  | 130,200 |  |  |
Number of shares available for future use under employee savings and investment plan (in shares) | 119,800 |  |  | 119,800 |  |  |
Number of shares issued during period, employee benefit plan (in shares) | 18,535 | 17,472 | 14,990 |  |  |  |
Number of shares registered with SEC for dividend reinvestment plan (in shares) |  |  |  |  |  |  | 600,000
Number of shares issued during period, dividend reinvestment plan (in shares) | 15,908 | 14,418 | 11,326 | 347,014 |  |  |
Number of shares for future use (in shares) | 252,986 |  |  |  |  |  |
Proceeds from sale of common stock | $ 867 | $ 817 | $ 796 |  |  |  |
Capital Purchase Program |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |
Proceeds from sale of common stock | $ 867 | $ 817 | $ 796 |  |  |  |

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