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Benefit Plans - Pension Expense (Details) - USD ($) $ in Thousands | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022
Components of net periodic benefit cost |  |  |
Service cost | $ 519 | $ 528 |
Interest cost | $ 274 | 239 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Noninterest Income, Other Operating Income |  |
Expected return on assets | $ (575) | (487) |
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Comprehensive Income Loss Change In funded Status Of Defined Benefit Plan Liability Net of Tax |  |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | $ (89) | (89) |
Defined Benefit Plan Net Periodic Benefit Cost Credit Amortization Of Prior Service Cost Credit Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag |  |  | true
Amortization of net loss | $ 183 | 270 |
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Comprehensive Income Loss Amortization Adjustment From AOCI Pension And Other Post retirement Benefit Plans of Net Prior Service Cost Credit Tax |  |
Pension expense | $ 312 | $ 461 |

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