| Fiscal period | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
| Period End Date | 12/31/2025 | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 |
| Loans | 41.68 | 45.29 | 47.12 | 49.68 | 57.56 | 59.38 | 58.15 | 59.03 | 61.74 | 69.14 |
| Money market assets and funds sold | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Available for sale: Tax-exempt | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Investment securities available for sale: Taxable | 126.16 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Investment securities held to maturity: Taxable | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Investment securities held to maturity: Tax-exempt | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Investment securities available for sale | -- | 167.84 | 190.04 | 144.65 | 105.42 | 91.34 | 74.15 | 60.38 | 44.66 | 34.28 |
| Investment securities held to maturity | 33.67 | 34.50 | 35.56 | 19.10 | 8.88 | 13.55 | 19.00 | 24.03 | 27.43 | 30.64 |
| Equity Securities | 1.67 | 0.72 | 0.63 | 0.54 | 0.46 | 0.42 | 0.39 | 0.35 | -- | -- |
| Interest Bearing Cash | 27.80 | 19.67 | 10.67 | 7.79 | 1.13 | 1.17 | 6.99 | 7.93 | -- | -- |
| Total Interest and Loan Fee Income | 230.98 | 268.01 | 284.01 | 221.76 | 173.44 | 165.86 | 158.68 | 151.72 | 133.84 | 134.05 |
| Savings deposits | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Time deposits | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deposits | 13.01 | 10.94 | 3.77 | 1.85 | 1.88 | 1.77 | 1.85 | 1.92 | 1.86 | 2.08 |
| Transaction deposits | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Federal Home Loan Bank advances | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Short-term borrowed funds | 0.70 | 0.67 | 0.12 | 0.08 | 0.08 | 0.05 | 0.03 | 0.04 | 0.04 | 0.04 |
| Debt financing and notes payable | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Bank Term Funding Program borrowings | -- | 5.81 | -- | -- | -- | -- | -- | -- | -- | -- |
| Other borrowed funds | -- | -- | -- | 0.00 | 0.00 | 0.00 | -- | -- | -- | -- |
| Term repurchase agreement | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Interest Expense | 13.71 | 17.42 | 3.89 | 1.93 | 1.96 | 1.82 | 1.89 | 1.96 | 1.90 | 2.12 |
| Net Interest Income | 217.27 | 250.60 | 280.12 | 219.83 | 171.49 | 164.03 | 156.79 | 149.76 | 131.94 | 131.94 |
| Provision for credit losses | (0.55) | 0.30 | (1.15) | 0.00 | 0.00 | 4.30 | -- | -- | (1.90) | (3.20) |
| Net Interest Income After Provision For Credit Losses | 217.82 | 250.30 | 281.27 | 219.83 | 171.49 | 159.73 | 156.79 | 149.76 | 133.84 | 135.14 |
| Financial services commissions | -- | -- | 0.34 | 0.42 | 0.36 | 0.37 | 0.39 | 0.50 | 0.64 | 0.57 |
| Service charges on deposit accounts | 13.34 | 14.03 | 14.17 | 14.49 | 13.70 | 14.15 | 17.88 | 18.51 | 19.61 | 20.85 |
| Securities gains (losses) | -- | -- | (0.13) | -- | 0.03 | 0.07 | 0.22 | (0.05) | 7.96 | -- |
| Securities impairment | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Loss on sale of securities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net losses from equity securities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Trust fees | 3.58 | 3.32 | 3.12 | 3.22 | 3.31 | 3.01 | 2.96 | 2.94 | 2.88 | 2.69 |
| Mortgage banking | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Merchant credit card | 10.97 | 10.45 | 11.28 | 11.62 | 12.00 | 10.21 | 10.13 | 9.63 | 8.43 | 6.38 |
| Debit card | 6.35 | 6.85 | 7.19 | 7.88 | 6.86 | 6.18 | 6.36 | 6.64 | 6.42 | 6.29 |
| ATM fees and interchange | 1.91 | 2.17 | 2.62 | 2.16 | 2.28 | 2.27 | 2.78 | 2.75 | 2.61 | 2.41 |
| Other non-interest (loss) income | 2.68 | 4.37 | 2.89 | 2.60 | 2.93 | 4.00 | 4.00 | 4.08 | 5.51 | 4.82 |
| Loss on extinguishment of debt | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Sale of real estate | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gains on sales of real property | -- | -- | -- | -- | -- | 3.54 | -- | -- | -- | -- |
| Life insurance proceeds | -- | -- | -- | -- | -- | -- | -- | 0.59 | -- | -- |
| Gain on acquisition | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other service fees | 1.75 | 1.77 | 1.77 | 1.81 | 1.88 | 1.84 | 2.26 | 2.57 | 2.58 | 2.57 |
| Life Insurance Gains | 0.21 | 0.20 | 0.28 | 0.93 | 0.00 | 0.00 | 0.43 | -- | -- | -- |
| Total Noninterest Income | 40.79 | 43.16 | 43.52 | 45.12 | 43.35 | 45.64 | 47.41 | 48.15 | 56.63 | 46.57 |
| Salaries and related benefits | 48.69 | 50.29 | 47.87 | 46.13 | 48.01 | 50.75 | 51.05 | 53.01 | 51.52 | 51.51 |
| Occupancy | 20.87 | 20.67 | 20.52 | 19.88 | 19.14 | 19.64 | 20.24 | 19.68 | 19.43 | 14.12 |
| FDIC insurance assessments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Amortization of Intangibles | -- | -- | -- | -- | 0.27 | 0.29 | 0.54 | 1.92 | 3.08 | 3.50 |
| Other real estate owned | -- | -- | -- | -- | -- | -- | -- | -- | -- | (0.48) |
| Furniture and Equipment | -- | -- | -- | -- | -- | -- | -- | -- | -- | 4.90 |
| Other | 12.98 | 13.79 | 14.82 | 12.70 | 15.36 | 14.04 | 12.79 | 14.96 | 10.17 | 13.77 |
| Data processing | 10.83 | 10.27 | 9.85 | 9.68 | 9.60 | 9.43 | 9.47 | 9.23 | 9.04 | 8.51 |
| Professional fees | 1.96 | 1.47 | 1.75 | 2.63 | 3.25 | 2.42 | 2.47 | 2.84 | 2.16 | 3.98 |
| Courier service | 2.96 | 2.71 | 2.65 | 2.61 | 2.18 | 2.00 | 1.88 | 1.78 | 1.73 | 1.95 |
| Visa litigation expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Settlements | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Loss contingency | -- | -- | -- | -- | -- | -- | 0.55 | 3.50 | 5.54 | -- |
| Impairment of tax credit investments | -- | -- | -- | -- | -- | -- | -- | -- | 0.63 | -- |
| Limited Partnership Operating Losses | 3.64 | 5.19 | 5.75 | 5.72 | -- | -- | -- | -- | -- | -- |
| Total Noninterest Expense | 101.92 | 104.39 | 103.22 | 99.36 | 97.81 | 98.57 | 98.99 | 106.92 | 103.29 | 101.75 |
| Income Before Income Taxes | 156.69 | 189.06 | 221.58 | 165.59 | 117.03 | 106.80 | 105.22 | 91.00 | 87.17 | 79.96 |
| Provision for income taxes | 40.51 | 50.42 | 59.81 | 43.56 | 30.52 | 26.39 | 24.83 | 19.43 | 37.15 | 21.10 |
| Current income tax expense: Federal | -- | -- | -- | -- | -- | 15.98 | 11.57 | 10.56 | 1.78 | 16.26 |
| Current income tax expense: State | -- | -- | -- | -- | -- | 10.65 | 9.60 | 9.82 | 7.81 | 7.29 |
| Deferred income tax benefit: Federal | -- | -- | -- | -- | -- | (0.54) | 2.34 | (0.21) | 14.46 | (2.60) |
| Deferred income tax benefit: State | -- | -- | -- | -- | -- | 0.29 | 1.32 | (0.74) | 0.78 | 0.16 |
| Net Income | 116.17 | 138.64 | 161.77 | 122.03 | 86.51 | 80.41 | 80.39 | 71.56 | 50.03 | 58.85 |
| Preferred stock dividends and discount accretion | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income applicable to common equity | 116.17 | 138.64 | 161.77 | 122.03 | 86.51 | 80.41 | 80.39 | 71.56 | 50.03 | 58.85 |
| Net Earnings Per Share (Basic) | 4.52 | 5.20 | 6.06 | 4.54 | 3.22 | 2.98 | 2.98 | 2.69 | 1.90 | 2.30 |
| Net Earnings Per Share (Diluted) | 4.52 | 5.20 | 6.06 | 4.54 | 3.22 | 2.98 | 2.98 | 2.67 | 1.89 | 2.29 |
| Average Shares Outstanding | 25.67 | 26.69 | 26.70 | 26.90 | 26.86 | 26.94 | 26.96 | 26.65 | 26.29 | 25.61 |
| Diluted Average Shares Outstanding | 25.67 | 26.69 | 26.71 | 26.91 | 26.87 | 26.96 | 27.01 | 26.76 | 26.42 | 25.68 |