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Consolidated Statements of Income - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Interest and Dividend Income, Operating [Abstract] |  |  |
Interest and Fee Income, Loans and Leases | $ 323,107 | $ 317,208 | $ 328,727
Interest and Dividend Income, Securities, by Classification [Abstract] |  |  |
Interest Income, Securities, US Treasury and Other US Government | 36,047 | 19,458 | 19,818
Interest Income, Securities, State and Municipal | 10,964 | 8,307 | 8,436
Other Interest and Dividend Income | 8,129 | 880 | 739
Interest and Dividend Income, Operating, Total | 378,247 | 345,853 | 357,720
Interest Expense, Deposits [Abstract] |  |  |
Interest Expense, NOW Accounts, Money Market Accounts, and Savings Deposits | 17,646 | 1,595 | 9,142
Interest Expense, Time Deposits | 3,314 | 4,711 | 12,186
Interest Expense, Borrowings [Abstract] |  |  |
Interest Expense, Short-term Borrowings | 1,395 | 767 | 1,110
Interest Expense, Long-term Debt | 8,833 | 8,887 | 7,652
Total interest expense | 31,188 | 15,960 | 30,090
Net interest income | 347,059 | 329,893 | 327,630
Provision for (recovery of) credit losses | 4,557 | (11,916) | 12,054
Interest Income (Expense), after Provision for Loan Loss, Total | 342,502 | 341,809 | 315,576
Noninterest Income [Abstract] |  |  |
Debit card fee income | 26,046 | 25,865 | 22,160
Bank Owned Life Insurance Income | 6,100 | 4,897 | 4,789
ATM Fees | 2,273 | 2,379 | 1,773
Gains (Losses) on Sales of Other Real Estate | 5,611 | (4) | 1,207
Real Estate Owned, Valuation Allowance, Valuation Increase | 12,039 | 64 | 105
Gain (Loss) on Sale of Investments | 0 | 0 | 3,286
Gain on equity securities, net | 2,955 | 5,011 | 2,182
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component | 12,108 | 8,152 | 7,952
Noninterest Income, Other | 9,326 | 10,487 | 7,281
Total other income | 135,935 | 129,944 | 125,664
Noninterest Expense [Abstract] |  |  |
Salaries | 133,299 | 125,585 | 128,040
Employee benefits | 40,490 | 41,603 | 37,115
Occupancy expense | 13,866 | 13,039 | 13,802
Furniture and equipment expense | 11,901 | 10,887 | 18,805
Data processing fees | 32,627 | 30,539 | 11,659
Professional fees and services | 30,837 | 27,450 | 31,303
Marketing | 5,335 | 6,073 | 5,828
Insurance | 5,413 | 5,917 | 6,423
Communication | 3,891 | 3,539 | 4,084
State tax expense | 4,585 | 4,255 | 3,991
Amortization of Intangible Assets | 1,487 | 1,798 | 2,263
Payment for Debt Extinguishment or Debt Prepayment Cost | 0 | 0 | 10,529
Foundation contribution expense | 4,000 | 4,000 | 3,000
Miscellaneous | 10,247 | 8,833 | 9,753
Total other expense | 297,978 | 283,518 | 286,595
Income before income taxes | 180,459 | 188,235 | 154,645
Income taxes | 32,108 | 34,290 | 26,722
Net Income (Loss) Attributable to Parent | $ 148,351 | $ 153,945 | $ 127,923
Earnings Per Share [Abstract] |  |  |
Basic (in dollars per share) | $ 9.13 | $ 9.45 | $ 7.85
Diluted (in dollars per share) | $ 9.06 | $ 9.37 | $ 7.80
Fiduciary and Trust [Member] |  |  |
Noninterest Income [Abstract] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 34,091 | $ 34,449 | $ 28,873
Deposit Account [Member] |  |  |
Noninterest Income [Abstract] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 10,091 | 8,832 | 8,445
Bank Servicing [Member] |  |  |
Noninterest Income [Abstract] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 15,295 | 29,812 | 37,611
Noninterest Income, Other | $ 15,300 | $ 29,800 | $ 37,600

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