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Pension and Supplemental Executive Retirement Plans (Tables)
9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Activity in the Defined Benefit Plan
The following table presents information pertaining to the activity in our defined benefit plan, using the latest available actuarial valuations with a measurement date of September 30, 2022 and 2021 for the periods shown:
Three Months Ended September 30,Nine Months Ended September 30,
(Dollars in thousands)2022202120222021
Interest cost$85 $78 255 234 
Expected return on plan assets(167)(118)(501)(354)
Amortization of net actuarial loss107 127 321 381 
     Net periodic benefit cost$25 $87 $75 $261 
Contributions paid$— $— $— $3,835