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Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Preferred Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance | Common Stock [Member] | Common Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance | Retained Earnings | Retained Earnings Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance | Treasury Stock, Common [Member] | Treasury Stock, Common [Member] Cumulative Effect, Period of Adoption, Adjusted Balance | AOCI Attributable to Parent [Member] | AOCI Attributable to Parent [Member] Cumulative Effect, Period of Adoption, Adjusted Balance
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2020 |  | $ 0 | $ 0 | $ 460,687 | $ 460,687 | $ 704,764 |  | $ 696,808 | $ (130,766) | $ (130,766) | $ 5,571 | $ 5,571
Beginning balance (Accounting Standards Update 2016-13) at Dec. 31, 2020 |  |  |  |  |  |  | $ (7,956) |  |  |  |  |
Beginning balance, shares at Dec. 31, 2020 |  | 0 | 0 | 16,314,197 | 16,314,197 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Parent | $ 153,945 |  |  |  |  | 153,945 |  |  |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | 9,584 |  |  |  |  |  |  |  |  |  | 9,584 |
Dividends, Common Stock, Cash |  |  |  |  |  | 74,634 |  |  |  |  |  |
Stock Issued During Period, Shares, Dividend Reinvestment Plan |  |  |  | 45 |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Dividend Reinvestment Plan |  |  |  | $ 6 |  |  |  |  |  |  |  |
Allocated Share-based Compensation Expense | $ 6,300 |  |  | $ 6,345 |  |  |  |  |  |  |  |
Shares Paid for Tax Withholding for Share Based Compensation | 18,436 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | 29,670 |  |  | 29,670 |  |  |  |  |  |  |  |
Stock Granted, Value, Share-based Compensation, Net of Forfeitures |  |  |  | $ (5,226) |  | 141 |  |  | (2,964) |  |  |
Treasury Stock, Shares, Acquired |  |  |  | 137,659 |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  |  |  |  | (16,048) |  |  |
Treasury Stock Reissued Shares For Director Grants | 13,400 |  |  | 13,400 |  |  |  |  |  |  |  |
Treasury shares reissued for director grants |  |  |  |  |  | (316) |  |  | 1,360 |  |  |
Ending balance, shares at Dec. 31, 2021 |  | 0 |  | 16,219,563 |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2021 |  | $ 0 |  | $ 461,800 |  | 776,294 |  |  | (142,490) |  | 15,155 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 4.52 |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Parent | $ 148,351 |  |  |  |  | 148,351 |  |  |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | (117,549) |  |  |  |  |  |  |  |  |  | (117,549) |
Dividends, Common Stock, Cash |  |  |  |  |  | 76,771 |  |  |  |  |  |
Stock Issued During Period, Shares, Dividend Reinvestment Plan |  |  |  | 14 |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Dividend Reinvestment Plan |  |  |  | $ 2 |  |  |  |  |  |  |  |
Allocated Share-based Compensation Expense | $ 5,900 |  |  | $ 5,879 |  |  |  |  |  |  |  |
Shares Paid for Tax Withholding for Share Based Compensation | 21,219 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | 34,245 |  |  | 34,245 |  |  |  |  |  |  |  |
Stock Granted, Value, Share-based Compensation, Net of Forfeitures |  |  |  | $ (5,273) |  | (965) |  |  | (3,477) |  |  |
Treasury Stock Reissued Shares For Director Grants | 9,789 |  |  | 9,789 |  |  |  |  |  |  |  |
Treasury shares reissued for director grants |  |  |  |  |  | 326 |  |  | 994 |  |  |
Ending balance, shares at Dec. 31, 2022 |  | 0 | 0 | 16,263,583 | 16,263,583 |  |  |  |  |  |  |
Ending balance at Dec. 31, 2022 | $ 1,069,226 | $ 0 | $ 0 | $ 462,404 | $ 462,404 | 847,235 | $ (303) | $ 846,932 | (138,019) | $ (138,019) | (102,394) | $ (102,394)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 4.66 |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Parent | $ 126,734 |  |  |  |  | 126,734 |  |  |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | 36,203 |  |  |  |  |  |  |  |  |  | 36,203 |
Dividends, Common Stock, Cash |  |  |  |  |  | 68,716 |  |  |  |  |  |
Allocated Share-based Compensation Expense | $ 6,800 |  |  | $ 6,787 |  |  |  |  |  |  |  |
Shares Paid for Tax Withholding for Share Based Compensation | 23,973 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | 38,842 |  |  | 38,842 |  |  |  |  |  |  |  |
Stock Granted, Value, Share-based Compensation, Net of Forfeitures |  |  |  | $ (5,911) |  | (947) |  |  | (4,014) |  |  |
Treasury Stock, Shares, Acquired |  |  |  | 199,000 |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  |  |  |  | (23,017) |  |  |
Treasury Stock Reissued Shares For Director Grants | 13,054 |  |  | 13,054 |  |  |  |  |  |  |  |
Treasury shares reissued for director grants |  |  |  |  |  | (126) |  |  | 1,349 |  |  |
Ending balance, shares at Dec. 31, 2023 |  | 0 |  | 16,116,479 |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2023 | $ 1,145,293 | $ 0 |  | $ 463,280 |  | $ 903,877 |  |  | $ (155,673) |  | $ (66,191) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 4.20 |  |  |  |  |  |  |  |  |  |  |

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