| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Cash and due from banks | 23 | 11 | 12 | 12 | 9 | 11 | 11 | 15 | 10 | 11 | 18 | 12 | 15 | 10 |
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| Federal funds sold and overnight deposits | 5,000 | 19 | 6 | 13 | 19 | 19 | 32 | 53 | 38 | 104 | 93 | 59 | 5 | 101 |
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| Total cash and cash equivalents | - | - | - | - | - | - | - | - | - | - | 110 | 71 | 20 | 111 |
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| Securities available-for-sale | - | - | - | - | - | - | - | - | - | - | - | - | 191 | 160 |
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| Restricted equity securities, at cost | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 |
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| Loans | - | - | - | - | - | - | - | - | - | - | - | - | - | 928 |
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| Allowance for credit losses | - | - | - | - | - | - | - | - | - | - | - | - | - | 10 |
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| Deferred net loan costs | - | - | - | - | - | - | - | - | - | - | - | - | - | 648,695 |
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| Net loans | - | - | - | - | - | - | - | - | - | - | - | - | - | 919 |
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| Bank premises and equipment, net | 13 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 11 | 10 | 14 | 13 | 12 | 12 |
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| Accrued interest receivable | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 4 | 4 |
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| Bank owned life insurance | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
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| Goodwill | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
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| Other assets | 12 | 12 | 11 | 9 | 10 | 10 | 8 | 9 | 10 | 10 | 10 | 17 | 17 | 23 |
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| Total assets | 553 | 576 | 574 | 587 | 596 | 638 | 667 | 720 | 738 | 918 | 1,019 | 1,056 | 1,099 | 1,249 |
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| Demand, non-interest bearing | 63 | 73 | 82 | 89 | 94 | 104 | 117 | 122 | 125 | 186 | 209 | 216 | 203 | 198 |
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| Interest-bearing transaction accounts | - | - | 127 | 125 | 131 | 118 | 133 | 178 | 185 | 243 | 266 | - | 297 | 304 |
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| Money market funds | 71 | 87 | 82 | 89 | 82 | 79 | 93 | 85 | 91 | 116 | 130 | 140 | 121 | 170 |
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| Savings | 59 | 65 | 70 | 77 | 82 | 87 | 98 | 93 | 97 | 125 | 168 | 171 | 152 | 143 |
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| Time deposits, $250,000 and over | - | - | - | - | - | - | - | - | - | - | - | - | 25 | 43 |
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| Other time deposits | - | - | - | - | - | - | - | - | - | 97 | 89 | 86 | 99 | 145 |
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| Total deposits | 454 | 475 | 482 | 493 | 495 | 505 | 561 | 609 | 615 | 782 | 879 | 923 | 897 | 1,002 |
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| Repurchase agreements | 22 | 34 | 30 | 29 | 22 | 30 | 29 | 31 | 33 | 39 | 33 | 33 | 36 | 49 |
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| Borrowed funds | 18 | - | - | - | - | - | - | - | - | 3 | 1 | 1 | 55 | 73 |
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| Junior subordinated debentures | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
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| Accrued interest and other liabilities | - | - | - | - | - | - | - | - | - | - | - | 11 | 10 | 15 |
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| Total liabilities | 512 | 532 | 528 | 538 | 545 | 583 | 609 | 658 | 669 | 841 | 934 | 981 | 1,010 | 1,151 |
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| Preferred stock, 1,000,000 shares authorized, 15 shares issued and outstanding at December 31, 2024 and 2023 ($100,000 liquidation value, per share) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
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| Common stock - $2.50 par value; 15,000,000 shares authorized, 5,809,035 and 5,724,151 shares issued at December 31, 2024 and 2023, respectively (including 21,187 and 20,774 shares issued February 1, 2025 and 2024, respectively) | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 |
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| Additional paid-in capital | 27 | 28 | 29 | 29 | 30 | 31 | 32 | 33 | 33 | 34 | 35 | 36 | 38 | 39 |
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| Retained earnings | 1 | 3 | 5 | 7 | 8 | 11 | 13 | 18 | 23 | 29 | 38 | 46 | 54 | 62 |
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| Accumulated other comprehensive loss | 133,731 | 171,758 | -47,466 | -7,443 | -45,394 | -90,779 | -274,097 | -647,584 | 260,483 | 915,348 | -1,166,971 | -20,667,817 | -15,931,595 | -15,776,821 |
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| Less: treasury stock, at cost; 210,101 shares at December 31, 2024 and 2023 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
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| Total shareholders' equity | 41 | 43 | 46 | 49 | 51 | 54 | 58 | 63 | 69 | 77 | 85 | 75 | 89 | 98 |
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| Total liabilities and shareholders' equity | 553 | 576 | 574 | 587 | 596 | 638 | 667 | 720 | 738 | 918 | 1,019 | 1,056 | 1,099 | 1,249 |
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| Book value per common share outstanding | - | - | - | - | - | - | - | - | - | 14.25 | 15.48 | 13.55 | 15.87 | 17.24 |
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