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Retirement Plans (Tables)
9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Components of Net Pension Cost
The following items are components of net pension (income) for the periods indicated:
Three Months Ended September 30,Nine Months Ended September 30,
(dollars in thousands)2025202420252024
Service cost - benefits earned during the year$174 $236 $521 $710 
Interest costs on projected benefit obligations (1)
388 370 1,164 1,108 
Expected return on plan assets (1)
(585)(590)(1,755)(1,769)
Expected administrative expenses36 28 109 82 
Amortization of unrecognized net gain (1)
(319)(173)(957)(518)
Net periodic pension income$(306)$(129)$(919)$(387)
(1)The components of net periodic pension (income) other than the service cost and expected administrative expenses are included in other non-interest income.